Chapter 12. Enterprise Servletsand J2EE
This chapter discusses enterprise servlets. The term enterprise is used all the time with Java these days, but what does it mean? According to my trusty and beat-up copy of The American Heritage Dictionary (so old itâs priced at $1.95) the word enterprise has three definitions:
An undertaking, esp. one of some scope and risk
A business
Readiness to venture; initiative
Itâs a surprisingly close definition to what people mean when they say enterprise Java and enterprise servlets. We can merge the traditional definitions to create a modern definition:
Readiness to support a business undertaking of large scope
In other words, enterprise servlets are servlets designed to support business-oriented large-scale web sitesâhigh-traffic, high-reliability sites that have extra demands for scalability, load balancing, failover support, and integration with other Java 2, Enterprise Edition (J2EE) technologies.
As servlets have become increasingly popular and robust, and as servlet containers have become more solid and featureful, a growing number of enterprise sites are being built using servlets. Writing servlets for these sites differs from writing servlets for traditional sites, and in this chapter weâll discuss the special requirements and abilities of these enterprise servlets.
Distributing Load
For high-traffic and/or high-reliability sites, itâs often desirable to distribute the siteâs content and processing duties across multiple backend ...
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