General FAQs

• Is Infinispan's configuration compatible with JBoss Cache?

• What APIs does Infinispan offer?

• Which JVMs (JDKs) does Infinispan work with?

Cache Loaders and Cache Store FAQs

• Cache loaders and cache stores - what's the difference?

• Are modifications to asynchronous cache stores coalesced or aggregated?

• In JBoss Cache, the JDBC and File CacheLoaders had restrictions such as only being able to use Strings in Fqns.  Is this still the case in Infinispan?

• What does the passivation flag do?

• What if I get IOException "Unsupported protocol version 48" with JdbcStringBasedCacheStore?

Locking FAQs

• Does Infinispan support distributed eager locking?

• How does Infinispan support explicit eager locking?

• How does Infinispan support implicit eager locking?

• JBoss Cache exposed several different locking schemes - pessimistic, optimistic and MVCC.  I don't see a way to specify locking scheme in Infinispan.  Why is this?

• What isolation levels does Infinispan support?

Transaction FAQs

• When using Atomikos transaction manager, distributed caches are not distributing data, what is the problem?

Eviction and Expiration FAQs

• Cache's number of entries never reaches configured maxEntries, why is that?

• Expiration does not work, what is the problem?

• Why is cache size sometimes even higher than specified maxEntries of the eviction configuration element?

• Why isn't there a notification for the expiration of a cache entry?

Cache Manager FAQs

• Can I create caches using different cache modes using the same cache manager?

• Can transactions span different Cache instances from the same cache manager?

• How does multi-tenancy work?

• Infinispan allows me to create several Caches from a single CacheManager.  Are there any reasons to create separate CacheManagers?

Cache Mode FAQs

• What is the difference between a replicated cache and a distributed cache?

• Does DIST support both synchronous and asynchronous communications?

• I have caches configured with asynchronous replication or distribution, but these caches appear to be behaving synchronously (waiting for responses), what is going on?

• I notice that when using DIST, the cache does a remote get before a write command.  Why is this?

• I use a clustered cache.  I want the guarantees of synchronous replication with the parallelism of asynchronous replication.  What can I do?

• Is buddy replication supported?

• What is the L1 cache?

Listener FAQs

• In a cache entry modified listener, can the modified value be retrieved via Cache.get() when isPre=false?

Cloud FAQs

• How do you make Infinispan send replication traffic over a specific network when you don't know the IP address?

Demo FAQs

• When using the GUI Demo, I've just put an entry in the cache with lifespan of -1.  Why do I see it as having a lifespan of 60,000?

Query Module FAQs

• When I run an application based on the Query module, I get a ClassNotFoundException for org.slf4j.impl.StaticLoggerBinder. How do I solve it?

JBoss Application Server Integration FAQs

• Can I run my own Infinispan cache within JBoss Application Server 5 or 4?

• Can I run my own Infinispan cache within JBoss Application Server 6?

Logging FAQs

• How can I enable logging?

Third Party Container FAQs

• Can I use Infinispan on Google App Engine for Java?

• When running on Glassfish or Apache, creating a cache throws an exception saying "Unable to construct a GlobalComponentRegistry", what is it wrong?

Language FAQs

• Can I use Infinispan with Groovy?  What about Jython, Clojure, JRuby or Scala etc.?

Marshalling & Unmarshalling

• Best practices implementing java.io.Externalizable

• Does Infinispan support storing Non-Serializable objects?

• Do Externalizer implementations need to access internal Externalizer implementations?

• Do I need to register an application cacheloader when using an isolated deployment?

• During state transfer, the state receiver logs an EOFException when applying state saying "Read past end of file". Should I worry about this?

• How do I get more information on marshalling & unmarshalling exceptions?

• Why am I getting invalid data passed to readExternal?

Tuning FAQs

• When running Infinispan under load, I see RejectedExecutionException, how can I fix it?

JNDI FAQs

• Can I bind Cache or CacheManager to JNDI?

Hibernate 2nd Level Cache FAQs

• Can I use Infinispan as a remote JPA or Hibernate second level cache?

• I'm adding the Infinispan 2nd level cache provider to existing servers that already use JGroups.  Should I set Infinispan to use the same JGroups cluster, or should I use two separate cluster names?

• Is it possible to use the Infinispan 2nd level cache outside of a J2EE server, and if so how do I set up the transaction manager lookup?

• What are the pitfalls of not using a non-JTA transaction factory such as JDBCTransactionFactory with Hibernate when Infinispan is used as 2nd level cache provider?

Cache Server FAQs

• After running a Hot Rod server for a while, I get a NullPointerException in HotRodEncoder.getTopologyResponse(), how can I get around it?

• Is there a way to do a Bulk Get on a remote cache?

• What is the startServer.sh script used for? What is the startServer.bat script used for?

Debugging FAQs

• How can I get Infinispan to show the full byte array? The log only shows partial contents of byte arrays...

Clustering Transport FAQs

• How do I retrieve the clustering physical address?