With Resin 4.0, we can expose our distributed caching/store capabilities to all developers, using the javax.cache interface. Internally, our distributed cache builds on 10 years of work with distributed sessions. So the jcache support isn’t a new capability, really, it’s just newly available for developers.

As an introduction, I want to show the prototypical code sample (it’s an injected Map), and the configuration (one XML tag in the resin-web.xml). The configuration is simple because Resin’s clustered cache is designed for Resin and automatically inherits the cluster and triad configuration from the Resin deployment.

Distributed caching reduces load on the database, improves latency, and can improve reliability by providing a failover capability in a load-balancing configuration. Essentially, you store serialized objects in a Map and the cache makes the Map entries visible across the entire cluster pod automatically.

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