Caffeine is a Java 8 based concurrency library that provides specialized data structures, such as a high performance cache. Please see our documentation for more details.

compile 'com.github.ben-manes.caffeine:caffeine:1.0.1'

// Optional extensions
compile 'com.github.ben-manes.caffeine:guava:1.0.1'
compile 'com.github.ben-manes.caffeine:jcache:1.0.1'
compile 'com.github.ben-manes.caffeine:tracing-async:1.0.1'

Snapshots of the development version is available in Sonatype's snapshots repository.

Cache: Features at a Glance

• automatic loading of entries into the cache, optionally asynchronously
• least-recently-used eviction when a maximum size is exceeded
• time-based expiration of entries, measured since last access or last write
• keys automatically wrapped in weak references
• values automatically wrapped in weak or soft references
• notification of evicted (or otherwise removed) entries
• accumulation of cache access statistics

In addition, Caffeine (javadoc) offers the following extensions:

• tracing (api javadoc, async javadoc)
• simulation (javadoc)
• JSR-107 JCache (javadoc)
• Guava adapters (javadoc)