JCache samples

Sample code for a JCache presentation at JHUG meetup.

• HelloWorldTest: start here
• EntryProcessorTest: demonstrates atomic execution of EntryProcessor
• HelloWorldApp and HelloWorldAppTest: HelloWorldApp demonstrates how to implement cache-aside and cache-through caching of a SlowService. It is a web application built on the JDK's embedded web server.
  • HelloWorldHandler does not cache.
  • CacheAsideHandler implements the cache-aside pattern: queries the cache for cached results, then if none found, requests the result from SlowService and puts the retrieved result in its cache.
  • CacheThroughHandler implements the cache-through pattern: all requests are served from the Cache which is now configured with a CacheLoader.

Building and running

The samples have been tested with Java 8 and maven 3.5.0. While building, skip tests as some are intentionally failing.

mvn -DskipTests clean package

You may execute each test individually, for example:

mvn -Dtest=HelloWorldTest test

JSR-107 resources

• JSR page on JCP: https://www.jcp.org/en/jsr/detail?id=107
• Source code and issue tracking: https://github.com/jsr107/
• Discussion forum: https://groups.google.com/forum/?fromgroups=#!forum/jsr107