O'Reilly logo

Cassandra High Availability by Robbie Strickland

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

How collections are stored

The introduction of collections to CQL addresses some of the concerns that frequently arose regarding Cassandra's primitive data model. They add richer capabilities that give developers more flexibility when modeling certain types of data.

Cassandra supports three collection types: sets, lists, and maps. In this section, we will examine each of these and take a look at how they're stored under the hood. But first, it's important to understand some basic rules regarding collections:

  • The size of each item in a collection must not be more than 64 KB
  • A maximum of 64,000 items may be stored in a single collection
  • Querying a collection always returns the entire collection
  • Collections are best used for relatively small, bounded ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required