Cache entry not surviving restart using SingleFileStore

[jugglingcats]

Hi, I'm new to Infinispan... I'm trying to reproduce the Groovy example in the getting started guide using the fluent API for configuration. I was led in this direction because I failed to get the Mongo store working and went for a more standard configuration/example to test things worked as I expected. I'm using 6.0.0 final.

The groovy example calls stop() and start() on the cache. If I follow this procedure, my key is retrieved from the cache ok, but if I stop the manager and recreate everything from scratch (to simulate an actual restart), it is not found.

Here is my unit test...

    @Test

    public void testValueAvailableAfterRestart() {

        // given a file store configuration

        Configuration configuration = new ConfigurationBuilder()

                .persistence()

                .passivation(false)

                .addStore(SingleFileStoreConfigurationBuilder.class)

                .fetchPersistentState(true)

                .ignoreModifications(false)

                .purgeOnStartup(false)

                .preload(true)

                .shared(false)

                .build();

        // and a cache manager with this configuration

        EmbeddedCacheManager manager1=new DefaultCacheManager();

        manager1.defineConfiguration("file-cache", configuration);

        // and the cache defined therein

        Cache<Object, Object> cache1 = manager1.getCache("file-cache");

        // the cache doesn't contain my key

        assertNull(cache1.get("key1"));

        // but when the key is added

        cache1.put("key1", "value1");

        // the cache does contain my key

        assertNotNull(cache1.get("key1"));

        manager1.stop(); // avoid complaints about duplicate JMX bean

        // given a fresh cache (simulating a restart)

        EmbeddedCacheManager manager2=new DefaultCacheManager();

        Cache<Object, Object> cache2=manager2.getCache("file-cache");

        manager2.defineConfiguration("file-cache", configuration);

        // it should contain my key (from the store)

        assertNotNull(cache2.get("key1"));

    }

Am I misunderstanding something fundamental here? Should entries in the SingleFileStore (and other cache stores) survive a restart? Is there something I need to force it to write (was expecting write-through by default)?

The eventual configuration I'm looking for is:

- Clustered cache backed by Mongodb

- Distributed mode to get some shared memory with resilience

- Long timeout on cache entries (eg. 3 months)

- Passivation based on cache size / available memory / time since last use

- Least used eviction strategy

- Custom Mongo store (because we have some reporting tools to run against mongo, so objects should be structured)

From what I read, this is a reasonable goal with Infinispan...?

Any advice appreciated.

Many thanks!

Alfie.

[jholusa]

Hi Alfie,

thanks for your question.

There's just a little bug in your test When you create the second cache manager and cache, e.g. these lines:

EmbeddedCacheManager manager2=new DefaultCacheManager();

Cache<Object, Object> cache2=manager2.getCache("file-cache");

manager2.defineConfiguration("file-cache", configuration);

You're actually first retrieving the "file-cache" and after that you're configuring it. So switch lines 2 and 3 and everything works fine. I guess you have just overlooked so there's no need for further explanation, but if I'm wrong, feel free to ask

[jugglingcats]

*blush*