High Performance Drupal

Index

A note on the digital index

A link in an index entry is displayed as the section title in which that entry appears. Because some sections have multiple index markers, it is not unusual for an entry to have several links to the same section. Clicking on any link will take you directly to the place in the text in which the marker appears.

A

A link, Query log

Acquia Cloud, Prepackaged Clouds

adding caching, Caching

adding files to a page, Audits

administrative directories, Administrative Directory or VirtualHost

advantages of queues, Queues and Workers

aggregation logic, CSS and JavaScript Aggregation

AJAX, External Requests, Xdebug

callbacks, External Requests

requests, Xdebug

Amazon EC2, Virtualized Deployments

analyzing site performance, The Many Aspects of Drupal Performance

anonymous users, When Should You Use Page Caching?

Ansible, Vagrant and, Development Virtual Machines

Apache, strace, Service Categorization, Service Categorization, Configuration Management Systems, Development Virtual Machines, PHP and httpd Configuration–Why Not Use Nginx Everywhere?, PHP Apache Module Versus CGI, Apache MPM Settings, Prefork Thread Settings, KeepAlive, Cache Headers, Logging, Server Signature, Administrative Directory or VirtualHost, Administrative Directory or VirtualHost, Nginx, Defining a Backend

administrative directories, Administrative Directory or VirtualHost

attaching strace to, strace

cache headers, Cache Headers

custom configuration files, storing, Configuration Management Systems

KeepAlive, KeepAlive

logging, Logging

MPM settings, Apache MPM Settings

Nginx vs., Nginx

PHP module for, PHP Apache Module Versus CGI

Prefork module, Prefork Thread Settings

server signatures, Server Signature

Varnish, running with, Defining a Backend

virtual hosts on development server, Development Virtual Machines

VirtualHost and, Administrative Directory or VirtualHost

Apache Software Foundation, Using a Reverse Proxy with Drupal

Apache Traffic Server, Using a Reverse Proxy with Drupal

apachesolr module (Solr), Integrating Solr with Drupal, Indexing Content

APC, APC: PHP Opcode Cache–APC: PHP Opcode Cache

APC user cache, Cache, Lock, and Session Storage

apc.stat runtime setting (APC), APC: PHP Opcode Cache

apc._num_files_hint runtime setting (APC), APC: PHP Opcode Cache

application performance, Analyzing Application Performance–strace, The Devel Module–Query log, Xdebug, XHProf–XHProf, strace–strace

Devel module, The Devel Module–Query log

strace, strace–strace

Xdebug, Xdebug

XHProf, XHProf–XHProf

Aria storage engine, MariaDB

Assetic library, Minification On the Fly

authenticated traffic, When Should You Use Page Caching?

authkeys configuration file (Heartbeat), Configuration

automation required for cloud infrastructure, Infrastructure Overhead

B

backend networks, Internal Network Layout

backups, as hosting consideration, Hosting Considerations

base tables (MySQL), Base Tables and Join Order

base64 encoding, Image Requests

baseline load tests, Different Types of Load Tests

benefit of change, Getting Started with Performance Improvements

BitBucket, Locally Hosted or External Service

bottlenecks, Audits, Audits

identifying, Audits

branching model, of revision control systems, Revision Control Systems

bricks (GlusterFS), GlusterFS

browse controller (JMeter), Browse Controller

BSD, Heartbeat and, Installation

BSON format, MongoDB

Build Keeper plug-in (Jenkins), Jenkins

bytes, time to, Establishing a Performance Baseline, Waterfall Charts

C

cache, The Many Aspects of Drupal Performance, The Many Aspects of Drupal Performance, The Cache and Other Swappable Storage, Cache chains, Cache bins, Cache tags, Cache Stampedes and Race Conditions, Excessive Cache Granularity, Working Well Together, Cache, Lock, and Session Storage, Cache Headers

bins, Cache bins

chains, Cache chains

Drupal API, The Cache and Other Swappable Storage

fetching items from, The Many Aspects of Drupal Performance

granularity, Excessive Cache Granularity

headers, Cache Headers

resource requirements for, Working Well Together

stampedes, Cache Stampedes and Race Conditions

storage backends for, Cache, Lock, and Session Storage

storing items in, The Many Aspects of Drupal Performance

tags, Cache tags

Cache Actions, Reverse Proxy Caching

cache chain backend, Cache chains

Cache-Control cache header, Cache Headers

cacheable headers, Cacheable Headers

CacheArray, CacheArray

cachegrind files, Xdebug

caches, Service Categorization

CacheTags, Reverse Proxy Caching

caching, Page Caching–Reverse Proxy Caching, Caching–Render caching, Caching, Static Caching–Static Caching, Static Caching, Persistent Caching–Render caching, Render caching–Render caching, Inconsistent Caching, Caching for Authenticated Users, Serving Expired Content

adding, Caching

Drupal and, Page Caching–Reverse Proxy Caching

expired content, serving, Serving Expired Content

for authenticated rulers, Caching for Authenticated Users

inconsistent, Inconsistent Caching

persistent, Persistent Caching–Render caching

render, Render caching–Render caching

static, Static Caching–Static Caching

wrappers and, Static Caching

Cacti, Service Monitoring, Graphing Monitoring Data, Graphing Monitoring Data, Percona Monitoring Plug-Ins

plug-ins for, Graphing Monitoring Data

CFEngine, Which System to Use

check_command option (Icinga), How to Tune Monitoring

Chef, Which System to Use, Development Virtual Machines, Configuration Management

Vagrant and, Development Virtual Machines

Chrome Developer Tools, Audits, Image Requests, Waterfall Charts

cloud deployments, Drupal and Cloud Deployments–Common Issues with Cloud Deployments and Their Mitigations, Why Use the Cloud?, Infrastructure Overhead, Prepackaged Clouds, Common Issues with Cloud Deployments and Their Mitigations

advantages of, Why Use the Cloud?

infrastructure overhead of, Infrastructure Overhead

issues, Common Issues with Cloud Deployments and Their Mitigations

prepackaged, Prepackaged Clouds

cloud washing, What Is the Cloud?

clouds, managed, Prepackaged Clouds

clusters, file syncing across, File Storage for Multiple Web Servers–Storage Area Networks (SANs), rsync, GlusterFS, Single NFS Server, HA NFS Cluster–Testing, Storage Area Networks (SANs)

GlusterFS, GlusterFS

NFS server clusters, HA NFS Cluster–Testing

rsync and, rsync

single NFS server, Single NFS Server

storage area networks (SANs), Storage Area Networks (SANs)

code revision control, utility servers and, Utility Servers

Cole, Jeremy, InnoDB Index Structures

collecting information, Getting Started with Performance Improvements, Getting Started with Performance Improvements

approaches for, Getting Started with Performance Improvements

comma-separated values storage engines for MySQL, Drupal and MySQL Engines

compression, Compression

Config Elements (JMeter), Global Test Settings

configuration API, variable_set() Abuse

configuration management systems, Utility Servers, Not Just for Code, Configuration Management Systems, Pulling It Together: In-Depth Example with Puppet and Git–Pulling It Together: In-Depth Example with Puppet and Git, Development Virtual Machines, Deployment Workflow–Example Workflow with Git

scripts, in revision control systems, Not Just for Code

utility servers and, Utility Servers

Vagrant and, Development Virtual Machines

with Puppet/Git, Pulling It Together: In-Depth Example with Puppet and Git–Pulling It Together: In-Depth Example with Puppet and Git

workflow and, Deployment Workflow–Example Workflow with Git

Content Construction Kit (CCK) API, Entity/Field Storage

content delivery networks, Service Categorization, Why Not Use Nginx Everywhere?, Serving Static Content Through a CDN

Nginx and, Why Not Use Nginx Everywhere?

push vs. pull, Serving Static Content Through a CDN

content delivery networks (CDNs), CDNs, CDNs, jQuery Update, Content Delivery Networks–Choosing Between a CDN and a Reverse Proxy, Serving Static Content Through a CDN, Choosing Between a CDN and a Reverse Proxy

frontend performance and, CDNs

goals of, CDNs

Google, jQuery Update

reverse proxies vs., Choosing Between a CDN and a Reverse Proxy

serving static content through, Serving Static Content Through a CDN

content download, Waterfall Charts

Contextual modules, Excessive Cache Granularity

continuous integration (CI), Utility Servers, Continuous Integration (CI)

utility servers and, Utility Servers

cookies, Cookies and Varnish, Handling Cookies

handling with thread groups, Handling Cookies

VCL and, Cookies and Varnish

costs, Getting Started with Performance Improvements, Horizontal and Vertical Scaling, Hosting Considerations

as hosting consideration, Hosting Considerations

of infrastructure, Horizontal and Vertical Scaling

CPU, Context Matters, Context Matters, XHProf, What to Monitor

performance issues and, Context Matters

scalability issues and, Context Matters

usage, monitoring, What to Monitor

Cron, Cron

Cronolog, Logging

CRUD, CRUD

CSS, Limiting HTTP Requests, CSS and JavaScript Aggregation, Caching for Authenticated Users

aggregation, Limiting HTTP Requests

caching, Caching for Authenticated Users

Drupal and, CSS and JavaScript Aggregation

CSS Embedded Images, Image Requests

CSV storage engines for MySQL, Drupal and MySQL Engines

custom JavaScript, Audits

customizing content, When Should You Use Page Caching?, Query log

query log display, Query log

D

Data Definition Language (DDL), MongoDB

database logging, Logging, Graphing Monitoring Data, Server Monitoring During Load Tests

monitoring, Server Monitoring During Load Tests

databases, The Many Aspects of Drupal Performance, Service Categorization, Working Well Together

queries, time for, The Many Aspects of Drupal Performance

resource requirements for, Working Well Together

dblog module, Logging, PHP Errors

DDoS attacks, Verifying Changes

Debian, log destinations on, Logging

debugging, Debug Code in the Code Base, Common Issues

in Views, Common Issues

deleteMultiple() API, getMultiple()/setMultiple()/deleteMultiple()

deployment workflow, Deployment Workflow–Example Workflow with Git, Deployment Workflow–Example Workflow with Git, Example Workflow with Git, Deployment with Jenkins CI

DevOps, Deployment Workflow–Example Workflow with Git

with Git, Example Workflow with Git

with Jenkins CI, Deployment with Jenkins CI

Devel module, The Devel Module–Query log, Page timing, Memory usage, Query log–Query log

memory usage and, Memory usage

page timing, Page timing

query log, Query log–Query log

develop branch (Git), Example Workflow with Git

development environments, Development and Staging Environments, Development and Staging Environments, Development and Staging Environments, Development Virtual Machines

cost cutting for, Development and Staging Environments

providing, Development and Staging Environments

virtual hosts on, Development Virtual Machines

development settings, Development Settings

DevOps, “DevOps”: Breaking Down Barriers Between Development and Operations–Deployment with Jenkins CI, Revision Control Systems, Configuration Management Systems, Pulling It Together: In-Depth Example with Puppet and Git–Pulling It Together: In-Depth Example with Puppet and Git, Pulling It Together: In-Depth Example with Puppet and Git–Pulling It Together: In-Depth Example with Puppet and Git, Development Virtual Machines, Deployment Workflow–Example Workflow with Git, Deployment with Jenkins CI

configuration management systems, Configuration Management Systems

deployment workflow, Deployment Workflow–Example Workflow with Git

Git and, Pulling It Together: In-Depth Example with Puppet and Git–Pulling It Together: In-Depth Example with Puppet and Git

Jenkins CI and, Deployment with Jenkins CI

Puppet and, Pulling It Together: In-Depth Example with Puppet and Git–Pulling It Together: In-Depth Example with Puppet and Git

revision control systems, Revision Control Systems

virtual machines, development on, Development Virtual Machines

directors (VCL), Directors: Dealing with Multiple Backend Servers–Directors: Dealing with Multiple Backend Servers, Directors: Dealing with Multiple Backend Servers

types of, Directors: Dealing with Multiple Backend Servers

disk usage, monitoring, What to Monitor

display redirection pages, Query log

display time, frontend, Establishing a Performance Baseline

display_errors setting (php.ini), php.ini Settings

DISTINCT (MySQL), The Useless DISTINCT (“In Case of Accidents!”)

DNS lookup, Waterfall Charts

DNS vs. IP failover, IP Failover Versus DNS Failover

document complete events, Waterfall Charts

DOM selection, Audits, External Requests

DRBD, setting up, Setting Up DRBD–Setting Up DRBD

Driessen, Vincent, Example Workflow with Git

Drupal, Drupal Performance Out of the Box–Views, Page Caching–Reverse Proxy Caching, CSS and JavaScript Aggregation, CSS and JavaScript Aggregation, Logging, The Cache and Other Swappable Storage, The Cache and Other Swappable Storage, Cron, Views, Drupal Coding for Optimal Performance–Cache Stampedes and Race Conditions, Drupal and MySQL Engines, Replication, Integrating Solr with Drupal, Using a Reverse Proxy with Drupal, Edge-Side Includes

cache API for, The Cache and Other Swappable Storage

Cron and, Cron

CSS and, CSS and JavaScript Aggregation

ESI module, Edge-Side Includes

JavaScript aggregation and, CSS and JavaScript Aggregation

logging and, Logging

MySQL and, Drupal and MySQL Engines

optimizing, Drupal Coding for Optimal Performance–Cache Stampedes and Race Conditions

page caching with, Page Caching–Reverse Proxy Caching

read-only queries and, Replication

reverse proxies with, Using a Reverse Proxy with Drupal

Solr, integrating with, Integrating Solr with Drupal

swappable storage for, The Cache and Other Swappable Storage

Views and, Views

Drupal API website, Persistent Caching

Drupal Watchdog (website), Drupal Watchdog

drush, Cron, Static Caching, Queues and Workers

E

E link, Query log

edge-side includes (ESIs), Edge-Side Includes

Edit modules, Excessive Cache Granularity

Elasticsearch, Service Categorization, Solr Search

emergency fixes, Debug Code in the Code Base

entity cache, Entity/Field Storage

entity storage, EntityFieldQuery/EntityQuery, EntityFieldQuery/EntityQuery, CRUD, MongoDB

CRUD, CRUD

EntityFieldQuery, EntityFieldQuery/EntityQuery

EntityQuery, EntityFieldQuery/EntityQuery

MongoDB, MongoDB

EntityFieldQuery, EntityFieldQuery/EntityQuery, MongoDB

MongoDB and, MongoDB

EntityQuery, EntityFieldQuery/EntityQuery

EntityQuery() API, entityQuery()

error responses, tracking, Interpreting Test Results

ETag cache header, Cache Headers

event handling, Audits

evictions, Cache, Lock, and Session Storage, Constant Evictions

least recently used (LRU), Cache, Lock, and Session Storage

Expire, Reverse Proxy Caching

Expires cache header, Cache Headers

external requests, The Many Aspects of Drupal Performance, External Requests

external scripts, External Scripts

F

Facebook, The Many Aspects of Drupal Performance, External Requests, XHProf

failover configuration, Common Issues with Cloud Deployments and Their Mitigations, Failover Configuration–Usage, IP Failover Versus DNS Failover, Service-Level Issues, Heartbeat

for cloud deployments, Common Issues with Cloud Deployments and Their Mitigations

Heartbeat, Heartbeat

IP vs. DNS, IP Failover Versus DNS Failover

service-level issues and, Service-Level Issues

failover infrastructure, High Availability and Failover

failover, as hosting consideration, Hosting Considerations

false optimizations, False Optimizations

FastCGI Process Manager (FPM), PHP Apache Module Versus CGI

field API, Entity/Field Storage

field storage, EntityFieldQuery/EntityQuery, EntityFieldQuery/EntityQuery, CRUD, MongoDB

CRUD, CRUD

EntityFieldQuery, EntityFieldQuery/EntityQuery

EntityQuery, EntityFieldQuery/EntityQuery

MongoDB, MongoDB

field_sql_storage module, Entity/Field Storage

File Systems in User Space (FUSE), GlusterFS

file-backed memory allocation, Memory Allocation

files, adding to pages, Audits

Firebug, Audits, Image Requests, Waterfall Charts

Firefox, Waterfall Charts

first-time visitors, Setting Goals for Website Performance

frontend performance, Establishing a Performance Baseline, The Many Aspects of Drupal Performance, Frontend Performance–Single Points of Failure (SPOFs), Limiting HTTP Requests–Audits, Audits–Audits, Image Requests, Minification, Compression, Cacheable Headers, CDNs, CDNs, jQuery Update, External Scripts, Single Points of Failure (SPOFs)–Single Points of Failure (SPOFs), CSS and JavaScript Aggregation, Analyzing Frontend Performance–Real User Monitoring, YSlow and Google PageSpeed, YSlow and Google PageSpeed, Waterfall Charts, Real User Monitoring

audits of, Audits–Audits

cacheable headers, Cacheable Headers

CDNs and, CDNs

compression, Compression

display times, Establishing a Performance Baseline

external scripts and, External Scripts

HTTP requests, limiting, Limiting HTTP Requests–Audits

image requests and, Image Requests

jQuery and, jQuery Update

minification, Minification

PageSpeed (Google), YSlow and Google PageSpeed

real user monitoring, Real User Monitoring

SPOFs and, Single Points of Failure (SPOFs)–Single Points of Failure (SPOFs)

third party libraries and, CDNs

verifying changes in, Analyzing Frontend Performance–Real User Monitoring

waterfall charts, Waterfall Charts

YSlow, YSlow and Google PageSpeed

frontend proxies, Service Categorization

full page loads, Establishing a Performance Baseline

function calls, XHProf

G

geographic distribution, as hosting consideration, Hosting Considerations

getMultiple() API, getMultiple()/setMultiple()/deleteMultiple()

Git, Pulling It Together: In-Depth Example with Puppet and Git–Pulling It Together: In-Depth Example with Puppet and Git, Pulling It Together: In-Depth Example with Puppet and Git, Example Workflow with Git, Revision Control with Git

repository, setting up, Pulling It Together: In-Depth Example with Puppet and Git

Subversion vs., Revision Control with Git

workflow with, example, Example Workflow with Git

Git Flow extensions, Revision Control with Git

Git Hub plug-in (Jenkins), Jenkins

GitHub, Locally Hosted or External Service

GlusterFS, GlusterFS, Example Configuration

configuring, Example Configuration

goals, Getting Started with Performance Improvements, Setting Goals for Website Performance, Setting Goals for Website Performance

realistic, Setting Goals for Website Performance

setting, Setting Goals for Website Performance

Google, Frontend Performance, jQuery Update

CDN, jQuery Update

Google Analytics, Real User Monitoring, Cookies and Varnish

grace period for expired content, Serving Expired Content

gzip compression, Compression

H

HA NFS clusters, HA NFS Cluster–Testing, Example Configuration, Setting Up DRBD–Setting Up DRBD, Setting Up Heartbeat, Setting Up NFS, Testing

configuration for, Example Configuration

DRBD, setting up, Setting Up DRBD–Setting Up DRBD

Heartbeat, Setting Up Heartbeat

NFS, setting up, Setting Up NFS

testing, Testing

ha.cf configuration file (Heartbeat), Configuration

HAProxy, Service Categorization

haresources configuration file (Heartbeat), Configuration

hb_standby tool (Heartbeat), Usage

hb_takeover tool (Heartbeat), Usage

Heartbeat, Setting Up Heartbeat, Heartbeat, Installation, Configuration–Configuration, Usage

configuration, Configuration–Configuration

failover configuration with, Heartbeat

installation, Installation

tools/options for, Usage

Heartbeat+CRM, Heartbeat

Heartbeat+Pacemaker, Heartbeat

high availability infrastructure, Horizontal and Vertical Scaling, High Availability and Failover

High Performance Drupal Group, High Performance Drupal Group

high traffic load tests, Different Types of Load Tests

historic data, graphing, Graphing Monitoring Data

horizontal scaling, Horizontal and Vertical Scaling–Horizontal and Vertical Scaling

hosted environments, network layout control on, Internal Network Layout

hosting considerations, Hosting Considerations

hotfixes, with Git, Example Workflow with Git

HTTP requests, Limiting HTTP Requests–Audits, Limiting HTTP Requests, Audits

limiting, Limiting HTTP Requests–Audits

minimizing, Limiting HTTP Requests

reducing with JavaScript, Audits

HTTP Sampler (JMeter), Browse Controller

I

Icinga, Service Monitoring, Monitoring Alerts with Icinga–How to Tune Monitoring, How to Tune Monitoring, Percona Monitoring Plug-Ins

check_command option, How to Tune Monitoring

icon fonts, Image Requests

identifying bottlenecks, Audits

image requests, Image Requests, Image Requests

frontend performance and, Image Requests

vis CSS, Image Requests

images, Image Requests

sprites, Image Requests

images,caching, Caching for Authenticated Users

improving page load time, Establishing a Performance Baseline

improving website performance, Beginning a Performance Project, Getting Started with Performance Improvements

potential improvements, Getting Started with Performance Improvements

in-memory allocation, Memory Allocation

indexes, Index Basics, Index Basics, Indexing Content

as trees, Index Basics

improving build time for, Indexing Content

infrastructure, Infrastructure Design and Planning–Summary, Horizontal and Vertical Scaling–Horizontal and Vertical Scaling, Horizontal and Vertical Scaling–Horizontal and Vertical Scaling, Service Categorization, Working Well Together, Example Two-Layer Configuration–Example Two-Layer Configuration, Example Larger-Scale Infrastructure, Development and Staging Environments, Development and Staging Environments, Internal Network Layout, Utility Servers, High Availability and Failover, High Availability and Failover, Hosting Considerations, Infrastructure Overhead, Infrastructure Considerations, Server Monitoring During Load Tests

bottlenecks in, Server Monitoring During Load Tests

development environments, Development and Staging Environments

failover, High Availability and Failover

for Solr, Infrastructure Considerations

high availability, High Availability and Failover

horizontal scaling, Horizontal and Vertical Scaling–Horizontal and Vertical Scaling

hosting considerations, Hosting Considerations

internal network layout, Internal Network Layout

large-scale, Example Larger-Scale Infrastructure

overhead for cloud deployments, Infrastructure Overhead

resource requirements and, Working Well Together

service categorization, Service Categorization

staging environments, Development and Staging Environments

two-layer configuration, Example Two-Layer Configuration–Example Two-Layer Configuration

utility servers, Utility Servers

vertical scaling, Horizontal and Vertical Scaling–Horizontal and Vertical Scaling

initial connection, Waterfall Charts

inline option, Audits

InnoDB storage engine, Drupal and MySQL Engines, Storage Engine Configuration, InnoDB Index Structures

index structures, InnoDB Index Structures

log file size, Storage Engine Configuration

innodb_buffer_size configuration option (InnoDB), Storage Engine Configuration

innodb_flush_log_at_trx_commit configuration option (InnoDB), Storage Engine Configuration

innodb_log_files configuration option (InnoDB), Storage Engine Configuration

innodb_log_file_size configuration option (InnoDB), Storage Engine Configuration

internal vs. remote monitoring, Internal Versus Remote Monitoring

IP addresses, Example Configuration, IP Failover Versus DNS Failover, Configuration

failover vs. DNS, IP Failover Versus DNS Failover

virtual, Configuration

IPVS, Service Categorization

IUS RHEL/CentOS repository (website), Per-Thread Configuration

J

JavaScript, Limiting HTTP Requests, Audits, Audits, Audits, CSS and JavaScript Aggregation, Excessive Cache Granularity, Caching for Authenticated Users, Interpreting Test Results

aggregation, Limiting HTTP Requests, CSS and JavaScript Aggregation

caching, Caching for Authenticated Users

custom, Audits

JMeter and, Interpreting Test Results

native functions, Audits

nodes in, Excessive Cache Granularity

reducing HTTP requests, Audits

Jenkins CI, Cron, Deployment with Jenkins CI, Jenkins

plug-ins for, Jenkins

Jetty servers, Infrastructure Considerations

Jiffy, Real User Monitoring

JMeter, Interpreting Test Results, Example Load Test Using JMeter–Reading Test Results, Global Test Settings, Global Test Settings, Thread Groups, Handling Cookies, Login Controller–Login Controller, Browse Controller, Output Configuration, Running a Test, Reading Test Results

browse controller, Browse Controller

cookie handling, Handling Cookies

downloading linked assets with, Global Test Settings

global settings for, Global Test Settings

JavaScript and, Interpreting Test Results

login controller, Login Controller–Login Controller

output configuration, Output Configuration

test results, reading, Reading Test Results

tests, running, Running a Test

thread groups, Thread Groups

jmeter-plugins third party listener, Reading Test Results

join order (MySQL), Base Tables and Join Order

jQuery, Audits, Preminification for Modules/Themes, Keep Third-Party Libraries Up to Date, Keep Third-Party Libraries Up to Date, jQuery Update

frontend performance and, jQuery Update

update, Keep Third-Party Libraries Up to Date

K

KCacheGrind, Xdebug

KeepAlive (Apache), KeepAlive

KeepAliveTimeout (Apache), KeepAlive

key-based invalidation, Cache tags

key/value store API, variable_set() Abuse

key_buffer global option (MySQL), Global Configuration

L

Last-Modified cache header, Cache Headers

latency, testing, Interpreting Test Results

least recently used (LRU) evictions, Cache, Lock, and Session Storage

Linux, Installation, Configuring the Memcache Daemon

Heartbeat and, Installation

Memcache in, Configuring the Memcache Daemon

load balancers, Service Categorization

load test plans, Creating a Valid Test

load testing, Load Testing–Reading Test Results, Different Types of Load Tests, Creating a Valid Test, Continuous Integration (CI), Periodic Testing, Manual Targeted Testing, Interpreting Test Results, Server Monitoring During Load Tests, Where to Test, Example Load Test Using JMeter–Reading Test Results, Global Test Settings, Thread Groups, Login Controller–Login Controller, Browse Controller, Output Configuration, Running a Test, Reading Test Results

browse controller, Browse Controller

continuous integration (CI), Continuous Integration (CI)

creating, Creating a Valid Test

environments for, Where to Test

global settings for, Global Test Settings

interpreting results of, Interpreting Test Results

login controller, Login Controller–Login Controller

manual targeted, Manual Targeted Testing

output configuration, Output Configuration

periodic testing, Periodic Testing

running, Running a Test

server monitoring during, Server Monitoring During Load Tests

test results, reading, Reading Test Results

thread groups in JMeter, Thread Groups

types of, Different Types of Load Tests

with JMeter, Example Load Test Using JMeter–Reading Test Results

lock storage backends, Cache, Lock, and Session Storage

logging, Logging, Logging, Logging and Monitoring Varnish

Drupal and, Logging

for Varnish, Logging and Monitoring Varnish

login controller, Login Controller–Login Controller

logs, Logging, Logging

destination files for, Logging

file format for, Logging

log_errors setting (php.ini), php.ini Settings

long TTLs, Cache tags

Lucene project (Apache), Infrastructure Considerations

M

maintain coherency, Cache tags

malloc, Varnish memory allocation and, Memory Allocation

managed clouds, Prepackaged Clouds

manual targeted testing, Manual Targeted Testing

MariaDB, MariaDB

master branch (Git), Example Workflow with Git

max-age=N cache header, Cache Headers

MaxClinets setting (Prefork), Prefork Thread Settings

MaxRequestsPerChild setting (Prefork), Prefork Thread Settings

MaxSpareServers setting (Prefork), Prefork Thread Settings

max_connections global option (MySQL), Global Configuration

max_heap_table_size variable (MySQL), Per-Thread Configuration

measuring site performance, Getting Started with Performance Improvements, The Many Aspects of Drupal Performance

Meenan, Patrick, Single Points of Failure (SPOFs)

Memcache(d), Service Categorization, Working Well Together, Memcache In Depth–Configuring the Memcache Daemon, PHP Extensions for Memcache, Assigning Memcached Servers and Bins, Assigning Memcached Servers and Bins, What to Store in Memcache, Configuring the Memcache Daemon, Inconsistent Caching, Constant Evictions, Vanishing Sessions, Server Monitoring During Load Tests

caching, inconsistent, Inconsistent Caching

consistent hashing and, Assigning Memcached Servers and Bins

daemon, configuring, Configuring the Memcache Daemon

evictions, Constant Evictions

monitoring, Server Monitoring During Load Tests

PHP extensions for, PHP Extensions for Memcache

resource requirements for, Working Well Together

servers and bins for, Assigning Memcached Servers and Bins

usage, What to Store in Memcache

vanishing sessions, Vanishing Sessions

memory allocation, Memory Allocation

memory use, XHProf

memory_limit setting (php.ini), php.ini Settings

Microsoft SQL Server, Service Categorization

minification, Minification, Minification On the Fly, Preminification for Modules/Themes, Minifying During the Build Process

during the build process, Minifying During the Build Process

on the fly, Minification On the Fly

pre-, for modules/themes, Preminification for Modules/Themes

minimizing HTTP requests, Limiting HTTP Requests

MinSpareServers setting (Prefork), Prefork Thread Settings

mixed replication, Replication

modules, Page Caching

mod_php module (Apache), PHP Apache Module Versus CGI, Nginx

Nginx and, Nginx

Mon, Service-Level Issues

MongoDB, Service Categorization, MongoDB

Monit, Service-Level Issues

monitoring, Utility Servers, Setting Up DRBD, Logging and Monitoring Varnish

synchronization process, Setting Up DRBD

utility servers and, Utility Servers

Varnish, Logging and Monitoring Varnish

Monty Widenus, MariaDB

multiple entity loading, Multiple Entity Loading

multiprocessing module (MPM), Apache MPM Settings

Munin, Service Monitoring, Graphing Monitoring Data, Graphing Monitoring Data

plug-ins for, Graphing Monitoring Data

MyISAM storage engine, Drupal and MySQL Engines

MySQL, Service Categorization, What to Monitor, Graphing Monitoring Data, MySQL–Virtualized Deployments, Drupal and MySQL Engines, Oracle MySQL, MariaDB, Percona Server, General Configuration–Storage Engine Configuration, Global Configuration, Per-Thread Configuration, Storage Engine Configuration, Replication, Virtualized Deployments, Tools for Managing and Monitoring MySQL–Percona Monitoring Plug-Ins, Percona Toolkit, Openark Kit, mysqlreport–Percona Monitoring Plug-Ins, MySQL Query Optimization–Node Access, MySQL Query Optimization–Node Access, The Useless DISTINCT (“In Case of Accidents!”), Starfish Syndrome (All LEFT JOINS), Starfish Syndrome (All LEFT JOINS), Alternative Storage and Cache Backends

configurations, global, Global Configuration

configuring, General Configuration–Storage Engine Configuration

default data relationships in, Starfish Syndrome (All LEFT JOINS)

DISTINCT, The Useless DISTINCT (“In Case of Accidents!”)

Drupal and, Drupal and MySQL Engines

larger sites and, Alternative Storage and Cache Backends

MariaDB, MariaDB

monitoring, What to Monitor, Graphing Monitoring Data

mysqlreport, mysqlreport–Percona Monitoring Plug-Ins

openark kit, Openark Kit

optimizing, MySQL Query Optimization–Node Access

Oracle MySQL, Oracle MySQL

per-thread configuration, Per-Thread Configuration

Percona Server, Percona Server

Percona Toolkit, Percona Toolkit

queries, MySQL Query Optimization–Node Access

replication, Replication

starfish syndrome, Starfish Syndrome (All LEFT JOINS)

storage engine configuration, Storage Engine Configuration

virtualized deployment, Virtualized Deployments

MySQL Performance Blog, MySQL Performance

MySQL queries, Index Basics, Base Tables and Join Order, Base Tables and Join Order, Common Issues, The ORDER BY on an Unrelated Table, The ORDER BY on an Unrelated Table, Node Access

base tables, Base Tables and Join Order

indexes, Index Basics

join order, Base Tables and Join Order

node access and, Node Access

ORDER BY, The ORDER BY on an Unrelated Table

troubleshooting, Common Issues

unrelated tables, The ORDER BY on an Unrelated Table

MySQL query cache, variable_set() Abuse, Excessive Cache Granularity

mysqlreport, mysqlreport–Percona Monitoring Plug-Ins, mysqlreport

guide to, mysqlreport

mysqlsla tool (Percona), Percona Toolkit

mytop, Query log

N

Nagios, Service Monitoring, Percona Monitoring Plug-Ins

Name Service Cache Daemon (NSCD), IP Failover Versus DNS Failover

Netflix, Real User Monitoring

network connection count, monitoring, What to Monitor

network layouts, Internal Network Layout

network traffic direction, IP Failover Versus DNS Failover

networks, backend, Internal Network Layout

NFS servers, Single NFS Server, HA NFS Cluster–Testing

clustering, HA NFS Cluster–Testing

Nginx, Service Categorization, Nginx, Using a Reverse Proxy with Drupal

no-cache cache header, Cache Headers

nodes in JavaScript, Excessive Cache Granularity

number of queries, Query log

O

oak-chunk-update tool (Openark), Openark Kit

oak-kill-slow-queries tool (Openark), Openark Kit

oak-purge-master-logs tool (Openark), Openark Kit

oak-security-audit tool (Openark), Openark Kit

oak-show-limits tool (Openark), Openark Kit

OPcache, APC: PHP Opcode Cache

opcode cache, APC: PHP Opcode Cache–APC: PHP Opcode Cache

openark kit, Openark Kit

OpenNMS, Monitoring Alerts with Icinga

optimizing Drupal, Drupal Coding for Optimal Performance–Cache Stampedes and Race Conditions, Context Matters, False Optimizations, Listing Entities–Caching, entityQuery(), Multiple Entity Loading, Caching–Render caching, Queues and Workers, Queues and Workers, Cache Stampedes and Race Conditions, Cache Stampedes and Race Conditions, Drupal Coding for Abysmal Performance–Development Settings, variable_set() Abuse–variable_set() Abuse, External Requests, Sessions, Excessive Cache Granularity, PHP Errors, Debug Code in the Code Base, Development Settings

cache granularity, Excessive Cache Granularity

cache stampedes, Cache Stampedes and Race Conditions

caching, Caching–Render caching

context and, Context Matters

debugging, Debug Code in the Code Base

development settings and, Development Settings

EntityQuery() API, entityQuery()

external requests and, External Requests

false, False Optimizations

listing entities and, Listing Entities–Caching

multiple entity loading and, Multiple Entity Loading

PHP errors and, PHP Errors

queues and, Queues and Workers

race conditions, Cache Stampedes and Race Conditions

sessions, Sessions

variable_set() and, variable_set() Abuse–variable_set() Abuse

workers, Queues and Workers

Oracle, Service Categorization

Oracle MySQL, Oracle MySQL

ORDER BY (MySQL), The ORDER BY on an Unrelated Table

P

page assets, CSS and JavaScript Aggregation

page caching, Page Caching–Reverse Proxy Caching, When Should You Use Page Caching?, Internal Page Caching, Reverse Proxy Caching, Page timing

internal, Internal Page Caching

reverse proxy, Reverse Proxy Caching

usage, When Should You Use Page Caching?

page load time, Establishing a Performance Baseline, Establishing a Performance Baseline, Establishing a Performance Baseline, Setting Goals for Website Performance, Setting Goals for Website Performance, Setting Goals for Website Performance

decreasing maximum, Setting Goals for Website Performance

full page load, Establishing a Performance Baseline

improving, Establishing a Performance Baseline

improving for first-time visitors, Setting Goals for Website Performance

reducing average, Setting Goals for Website Performance

page requests per second, testing, Interpreting Test Results

PageSpeed (Google), Frontend Performance, YSlow and Google PageSpeed, YSlow and Google PageSpeed

summary reports from, YSlow and Google PageSpeed

Pantheon, Prepackaged Clouds

parsing requests, Page Caching

PDO, XHProf

peak memory use, XHProf

Percona Server, Percona Server

Percona Toolkit, Percona Toolkit, Percona Monitoring Plug-Ins

monitoring plug-ins for, Percona Monitoring Plug-Ins

Percona Tools (website), Per-Thread Configuration

performance issues, Context Matters, Example Two-Layer Configuration, Common Issues with Cloud Deployments and Their Mitigations, Cache, Lock, and Session Storage

as site grows, Example Two-Layer Configuration

cache backends and, Cache, Lock, and Session Storage

with cloud deployments, Common Issues with Cloud Deployments and Their Mitigations

performance of revision control systems, Revision Control Systems

Performance plug-in (Jenkins), Jenkins

performance projects, Beginning a Performance Project–Creating a Prioritized List of Improvements, Getting Started with Performance Improvements–Getting Started with Performance Improvements, Getting Started with Performance Improvements, Establishing a Performance Baseline, Setting Goals for Website Performance, The Many Aspects of Drupal Performance, Creating a Prioritized List of Improvements

baselines, establishing, Establishing a Performance Baseline

collecting information for, Getting Started with Performance Improvements

Drupal for, The Many Aspects of Drupal Performance

goals, setting for, Setting Goals for Website Performance

improvements, prioritizing, Creating a Prioritized List of Improvements

improving, Getting Started with Performance Improvements–Getting Started with Performance Improvements

periodic jobs, utility servers and, Utility Servers

periodic testing, Periodic Testing

persistent caching, Persistent Caching–Render caching, Cache chains, Cache bins, getMultiple()/setMultiple()/deleteMultiple(), getMultiple()/setMultiple()/deleteMultiple(), getMultiple()/setMultiple()/deleteMultiple(), Cache tags, CacheArray, Render caching–Render caching

cache bins, Cache bins

cache chains, Cache chains

cache tags, Cache tags

CacheArray, CacheArray

deleteMultiple() API, getMultiple()/setMultiple()/deleteMultiple()

getMultiple() API, getMultiple()/setMultiple()/deleteMultiple()

render caching, Render caching–Render caching

setMultiple() API, getMultiple()/setMultiple()/deleteMultiple()

PhantomJS, YSlow and Google PageSpeed

PHP, The Many Aspects of Drupal Performance, Minification On the Fly, Compression, When Should You Use Page Caching?, PHP Errors, Xdebug, strace–strace, Configuration Management Systems, PHP Extensions for Memcache, PHP and httpd Configuration–Why Not Use Nginx Everywhere?, APC: PHP Opcode Cache–APC: PHP Opcode Cache, php.ini Settings, php.ini Settings, PHP Apache Module Versus CGI, Cache Headers

Apache module vs. CGI, PHP Apache Module Versus CGI

cache headers, Cache Headers

custom configuration files, storing, Configuration Management Systems

errors, and optimizing Drupal code, PHP Errors

execution time, The Many Aspects of Drupal Performance

for anonymous users, When Should You Use Page Caching?

gzip support, Compression

Memcache, extensions for, PHP Extensions for Memcache

memory usage, php.ini Settings

opcode cache, APC: PHP Opcode Cache–APC: PHP Opcode Cache

php.ini settings, php.ini Settings

preprocessors, Minification On the Fly

strace, strace–strace

Xdebug and, Xdebug

Picture module, Image Requests

ping checks against servers, What to Monitor

Poormanscron module, Cron

PostgreSQL, Service Categorization

Prefork module (Apache), Apache MPM Settings, Prefork Thread Settings

Pressflow 6, Replication

private cache header, Cache Headers

Pro Git, Revision Control with Git

probe section (VCL file), Defining a Backend

protwords.txt configuration file (Solr), Solr Configuration

proxy caches, Service Categorization

pt-index-usage tool (Percona), Percona Toolkit

pt-online-schema-change tool (Percona), Percona Toolkit

pt-query-digest tool (Percona), Percona Toolkit

pt-table-checksum tool (Percona), Percona Toolkit

Puppet, Pulling It Together: In-Depth Example with Puppet and Git–Pulling It Together: In-Depth Example with Puppet and Git, Pulling It Together: In-Depth Example with Puppet and Git, Development Virtual Machines

master server, setting up, Pulling It Together: In-Depth Example with Puppet and Git

Vagrant and, Development Virtual Machines

Q

query log display, customizing, Query log

query results, Views

Query Settings (Views), The Useless DISTINCT (“In Case of Accidents!”)

query_cache_size global option (MySQL), Global Configuration

queue daemons, Queues and Workers

queues, Queues and Workers

advantages of, Queues and Workers

R

race conditions, Cache Stampedes and Race Conditions

RAM usage, monitoring, What to Monitor

range queries, Index Basics

read-only queries (MySQL), Replication

real users, Real User Monitoring, Real User Monitoring, Thread Groups

monitoring, Real User Monitoring, Real User Monitoring

thread groups vs., Thread Groups

realistic goals, Setting Goals for Website Performance

recording site performance, Getting Started with Performance Improvements

Red Hat, Setting Up NFS, Logging

log destinations on, Logging

NFS and, Setting Up NFS

Redis, Service Categorization, Alternative Storage and Cache Backends–Cache, Lock, and Session Storage, Vanishing Sessions

Memcache session storage vs., Vanishing Sessions

reducing page load time, Setting Goals for Website Performance

redundancy, High Availability and Failover

Regular Expression Extractor (JMeter), Login Controller

remote vs. internal monitoring, Internal Versus Remote Monitoring

render caching, Render caching–Render caching

rendered output, Views

replication, Replication, Solr Replication

MySQL, Replication

Solr, Solr Replication

request serve time, The Many Aspects of Drupal Performance

requirements, Getting Started with Performance Improvements

resource usage, Horizontal and Vertical Scaling

response time, testing, Interpreting Test Results

responsive images, Image Requests

reverse proxies, Working Well Together, Why Not Use Nginx Everywhere?, Reverse Proxies and Content Delivery Networks–Content Delivery Networks, Using a Reverse Proxy with Drupal, Understanding Varnish Configuration Language–Content Delivery Networks, Caching for Authenticated Users, Edge-Side Includes, Serving Expired Content, Error Pages, Memory Allocation, Logging and Monitoring Varnish, Logging and Monitoring Varnish, Choosing Between a CDN and a Reverse Proxy, Server Monitoring During Load Tests

caching for authenticated rulers, Caching for Authenticated Users

content delivery network vs., Choosing Between a CDN and a Reverse Proxy

edge-side includes, Edge-Side Includes

error pages, Error Pages

expired content, serving, Serving Expired Content

logging for, Logging and Monitoring Varnish

memory allocation, Memory Allocation

monitoring, Logging and Monitoring Varnish, Server Monitoring During Load Tests

Nginx and, Why Not Use Nginx Everywhere?

resource requirements for, Working Well Together

Varnish Configuration Language (VCL), Understanding Varnish Configuration Language–Content Delivery Networks

with Drupal, Using a Reverse Proxy with Drupal

reviews, Getting Started with Performance Improvements

revision control systems, Revision Control Systems, Revision Control Systems, Locally Hosted or External Service, Not Just for Code, Pulling It Together: In-Depth Example with Puppet and Git–Pulling It Together: In-Depth Example with Puppet and Git

features of, Revision Control Systems

local or external, Locally Hosted or External Service

system changes and, Not Just for Code

with Puppet/Git, Pulling It Together: In-Depth Example with Puppet and Git–Pulling It Together: In-Depth Example with Puppet and Git

RightScale, Prepackaged Clouds, Virtualized Deployments

row replication, Replication

RRDTool, Graphing Monitoring Data

rsync, rsync

S

SaaS solutions, Real User Monitoring

SASS, Image Requests

scalability, Context Matters, Cache, Lock, and Session Storage

cache backends and, Cache, Lock, and Session Storage

Scalable Vector Graphics (SVG), Image Requests

scaling out, Horizontal and Vertical Scaling

scaling up, Horizontal and Vertical Scaling

schema.xml configuration file (Solr), Solr Configuration

script tags, Single Points of Failure (SPOFs)

search backends, Service Categorization

search_api module (Solr), Integrating Solr with Drupal

security, Hosting Considerations, Administrative Directory or VirtualHost

as hosting consideration, Hosting Considerations

monitoring scripts and, Administrative Directory or VirtualHost

Sensu, Monitoring Alerts with Icinga

Server header, Server Signature

server signatures, Server Signature

ServerLimit setting (Prefork), Prefork Thread Settings

servers, Hosting Considerations, Infrastructure Considerations

multiple, Solr and, Infrastructure Considerations

virtual vs. physical, as hosting consideration, Hosting Considerations

ServerSignature setting (Apache), Server Signature

ServerTokens setting (Apache), Server Signature

service categorization, Service Categorization

service monitoring, Service Monitoring–Internal Versus Remote Monitoring, The Importance of Monitoring Services, Monitoring Alerts with Icinga–How to Tune Monitoring, Monitoring Alerts with Icinga, What to Monitor, How to Tune Monitoring, Graphing Monitoring Data, Internal Versus Remote Monitoring

commercial software for, Monitoring Alerts with Icinga

graphing data from, Graphing Monitoring Data

importance of, The Importance of Monitoring Services

internal vs. remote, Internal Versus Remote Monitoring

selecting services for, What to Monitor

tuning, How to Tune Monitoring

with Icinga, Monitoring Alerts with Icinga–How to Tune Monitoring

services, Page Caching

session storage backends, Cache, Lock, and Session Storage, What to Store in Memcache

Memcache(d) as, What to Store in Memcache

sessions, Sessions, Vanishing Sessions

vanishing, Vanishing Sessions

setMultiple() API, getMultiple()/setMultiple()/deleteMultiple()

setting TTLs, Cache tags

setting variables, variable_set() Abuse

settings API, variable_set() Abuse

shared memory (SHM) mount, Virtualized Deployments

short TTLs, Cache tags

Simple Data Writer (JMeter), Output Configuration

simpletest adaption, Static Caching

single points of failure (SPOFs), Single Points of Failure (SPOFs)–Single Points of Failure (SPOFs)

site performance, Getting Started with Performance Improvements, Getting Started with Performance Improvements, The Many Aspects of Drupal Performance, The Many Aspects of Drupal Performance

analyzing, The Many Aspects of Drupal Performance

measuring, Getting Started with Performance Improvements, The Many Aspects of Drupal Performance

recording, Getting Started with Performance Improvements

slave lag (MySQL), Replication

Slow Query Highlighting, Query log

social widgets, Single Points of Failure (SPOFs)

Solr, Service Categorization, Solr Search–Drupal Module Installation, Performance and Scalability Considerations, Performance and Scalability Considerations, Integrating Solr with Drupal, Solr Configuration, Indexing Content, Infrastructure Considerations, Solr Replication, Drupal Module Installation

configuring, Solr Configuration

features of, Integrating Solr with Drupal

indexing content, Indexing Content

infrastructure for, Infrastructure Considerations

installation, Drupal Module Installation

performance and, Performance and Scalability Considerations

replication, Solr Replication

scalability and, Performance and Scalability Considerations

solrconfig.xml configuration file, Solr Configuration

Sort Query Log, Query log

Souder, Steve, Real User Monitoring

Speedy module, Preminification for Modules/Themes, CSS and JavaScript Aggregation

Sphinx, Service Categorization, Solr Search

SPOF-O-Matic plug-in, Single Points of Failure (SPOFs)

SQLite, Service Categorization

Squid, Using a Reverse Proxy with Drupal

ssh, What to Monitor, Deployment with Jenkins CI

checks against servers, What to Monitor

Jenkins and, Deployment with Jenkins CI

SSL negotiation, Waterfall Charts

SSL requests, handling with CDNs, Content Delivery Networks

staging environments, Development and Staging Environments

starfish syndrome, Starfish Syndrome (All LEFT JOINS)

start render events, Waterfall Charts

StartServers setting (Prefork), Prefork Thread Settings

statd hostname (NFS), Example Configuration

state API, variable_set() Abuse

statement replication, Replication

static caching, Static Caching–Static Caching

stats command (Memcache), Configuring the Memcache Daemon

storage area networks (SANs), Storage Area Networks (SANs)

storage backends, Alternative Storage and Cache Backends–MongoDB, Cache, Lock, and Session Storage, Cache, Lock, and Session Storage, Cache, Lock, and Session Storage, Memcache In Depth–Configuring the Memcache Daemon, Inconsistent Caching, Constant Evictions, Entity/Field Storage–MongoDB, Entity/Field Storage–MongoDB, MongoDB

cache, Cache, Lock, and Session Storage

caching, inconsistent, Inconsistent Caching

entity, Entity/Field Storage–MongoDB

evictions, Constant Evictions

field, Entity/Field Storage–MongoDB

lock, Cache, Lock, and Session Storage

Memcache, Memcache In Depth–Configuring the Memcache Daemon

MongoDB, MongoDB

session, Cache, Lock, and Session Storage

storing, variable_set() Abuse

strace, strace–strace, strace

Apache and, strace

striped volumes (RAID-0), Virtualized Deployments

Subversion vs. Git, Revision Control with Git

Summary Report (JMeter), Reading Test Results

summary reports, YSlow and Google PageSpeed

support, as hosting consideration, Hosting Considerations

swap usage, monitoring, What to Monitor

swappable storage, The Cache and Other Swappable Storage

synchronization process, Setting Up DRBD

syslog module, Logging, PHP Errors

system data, monitoring, Graphing Monitoring Data

system log, Usage

T

targeted load tests, Different Types of Load Tests

third party libraries, CDNs

frontend performance and, CDNs

thread groups (JMeter), Thread Groups, Thread Groups, Handling Cookies

cookies, handling with, Handling Cookies

real users vs., Thread Groups

time problems, Query log

time to bytes, Establishing a Performance Baseline, Waterfall Charts

tmp_table_size variable (MySQL), Per-Thread Configuration

Tomcat servers, Infrastructure Considerations

traffic patterns, When Should You Use Page Caching?, When Should You Use Page Caching?, When Should You Use Page Caching?, When Should You Use Page Caching?, When Should You Use Page Caching?, When Should You Use Page Caching?

anonymous users, When Should You Use Page Caching?

authenticated, When Should You Use Page Caching?

content, When Should You Use Page Caching?

customized content, When Should You Use Page Caching?

frequent updates, When Should You Use Page Caching?

translators (GlusterFS), GlusterFS

Twitter, The Many Aspects of Drupal Performance, External Requests

two-layer configuration, Example Two-Layer Configuration–Example Two-Layer Configuration

U

updates, When Should You Use Page Caching?

uptime, as hosting consideration, Hosting Considerations

utility servers, Utility Servers, Deployment with Jenkins CI

Jenkins and, Deployment with Jenkins CI

V

Vagrant, Development Virtual Machines, Development Virtual Machines, How to Distribute Development VMs with Vagrant, Vagrant

distributing VMs with, How to Distribute Development VMs with Vagrant

pre-built virtual machines, Vagrant

virtual machines and, Development Virtual Machines

variable_set(), variable_set() Abuse–variable_set() Abuse, variable_set() Abuse

storing with, variable_set() Abuse

Varnish, Reverse Proxy Caching, Service Categorization, Example Larger-Scale Infrastructure, Using a Reverse Proxy with Drupal, Defining a Backend, Error Pages

Apache, running with, Defining a Backend

error pages, Error Pages

separating to dedicated servers, Example Larger-Scale Infrastructure

Varnish Configuration Language (VCL), Understanding Varnish Configuration Language–Content Delivery Networks, Understanding Varnish Configuration Language, Defining a Backend, Directors: Dealing with Multiple Backend Servers–Directors: Dealing with Multiple Backend Servers, Built-in VCL Subroutines, Customizing Subroutines–Customizing Subroutines, Cookies and Varnish, Caching for Authenticated Users, Edge-Side Includes, Memory Allocation, Logging and Monitoring Varnish, Logging and Monitoring Varnish

backends, defining, Defining a Backend

caching for authenticated rulers, Caching for Authenticated Users

changes to files, loading, Understanding Varnish Configuration Language

cookies and, Cookies and Varnish

directors, Directors: Dealing with Multiple Backend Servers–Directors: Dealing with Multiple Backend Servers

edge-side includes, Edge-Side Includes

logging for, Logging and Monitoring Varnish

memory allocation, Memory Allocation

monitoring, Logging and Monitoring Varnish

subroutines, built-in, Built-in VCL Subroutines

subroutines, customizing, Customizing Subroutines–Customizing Subroutines

Varnish Reference Manual (website), Varnish

varnishcsa daemon (Varnish), Logging and Monitoring Varnish

varnishhist logging tool (Varnish), Logging and Monitoring Varnish

varnishlog logging tool (Varnish), Logging and Monitoring Varnish

varnishstat logging tool (Varnish), Logging and Monitoring Varnish

VCL file, sample, Sample VCL for Drupal–Content Delivery Networks

vcl_error subroutine (VCL), Built-in VCL Subroutines, Error Pages

vcl_fetch subroutine (VCL), Built-in VCL Subroutines

vcl_hash subroutine (VCL), Built-in VCL Subroutines

vcl_recv subroutine (VCL), Built-in VCL Subroutines

verifying changes, Verifying Changes–strace, Analyzing Frontend Performance–Real User Monitoring, Analyzing Application Performance–strace

in frontend performance, Analyzing Frontend Performance–Real User Monitoring

to application performance, Analyzing Application Performance–strace

vertical scaling, Horizontal and Vertical Scaling–Horizontal and Vertical Scaling

Views, Views, Base Tables and Join Order, Starfish Syndrome (All LEFT JOINS), EntityFieldQuery/EntityQuery

data relationships in, Base Tables and Join Order

default data relationships in, Starfish Syndrome (All LEFT JOINS)

Drupal and, Views

EntityFieldQuery builder, EntityFieldQuery/EntityQuery

Views Cache Bully, Views

virtual IP, Configuration

virtual machines, Development Virtual Machines, Development Virtual Machines, How to Distribute Development VMs with Vagrant, Deployment Workflow–Example Workflow with Git, Common Issues with Cloud Deployments and Their Mitigations, Vagrant

deployment workflow, Deployment Workflow–Example Workflow with Git

development on, Development Virtual Machines

disappearing/failing, with cloud deployments, Common Issues with Cloud Deployments and Their Mitigations

distributing with Vagrant, How to Distribute Development VMs with Vagrant

pre-built, Vagrant

Vagrant, setting up with, Development Virtual Machines

VirtualHost, Administrative Directory or VirtualHost

virtualized deployment of MySQL, Virtualized Deployments

W

wall time, XHProf

waterfall charts, Waterfall Charts

Web Episodes, Real User Monitoring

web server data, monitoring, Graphing Monitoring Data, Server Monitoring During Load Tests

web services, Service Categorization, Working Well Together

resource requirements for, Working Well Together

WebKit implementation, YSlow and Google PageSpeed

webpagetest, Waterfall Charts

website, Beginning a Performance Project, Getting Started with Performance Improvements, Getting Started with Performance Improvements

goals, Getting Started with Performance Improvements

performance, improving, Beginning a Performance Project

requirements, Getting Started with Performance Improvements

widgets, social, Single Points of Failure (SPOFs)

Worker module (Apache), Apache MPM Settings

workflows, deployment, Deployment Workflow–Example Workflow with Git

wrappers, adding caching to, Static Caching

X

Xapian, Solr Search

Xdebug, Memory usage, Xdebug, XHProf, XHProf

PHP and, Xdebug

XHProf vs., XHProf

XHProf, Memory usage, XHProf–XHProf, XHProf, XHProf

extension, XHProf

Xdebug vs., XHProf

XtraDB storage engine, MariaDB

Y

Yahoo!, Frontend Performance, Using a Reverse Proxy with Drupal

YouTube, The Cache and Other Swappable Storage

YSlow, Frontend Performance, YSlow and Google PageSpeed, YSlow and Google PageSpeed

summary reports from, YSlow and Google PageSpeed

Z

Zabbix, Service Monitoring, Monitoring Alerts with Icinga

Zend Optimizer+, APC: PHP Opcode Cache

ZenOSS, Monitoring Alerts with Icinga

Zookeeper, Infrastructure Considerations