2.8.8

Cache

• Fixed NPE when running on the bootclasspath (#481, google/error-prone#1986)

2.8.7

Cache

• Fixed asMap().keySet().toArray() to not return expired mappings (#472)
• Added support for ISO-8601 durations to CaffeineSpec (#466)
• Fixed put update optimization for variable expiration (#478)

2.8.6

Cache

• Changed false sharing protection to comply with JDK 15's field layout (Java Objects Inside Out)
• Suppressed the removal listener notification when an AsyncCache future value resolves to null
• Improved the implementations of AsyncCache.synchronous().asMap() conditional methods
• Added Jandex index for assisting GraalVM AOT (quarkusio/quarkus#10420)
• Deprecated UnsafeAccess and SingleConsumerQueue

JCache

• Changed to an OSGi Component to avoid coupling consumers to the provider (#447)
• Added the ability to record native statistics (#460)

2.8.5

Cache

• Fixed expiration delay for scheduled cleanup (#431)

2.8.4

Cache

• Schedule maintenance on an absent getIfPresent if there is pending work (#420)

2.8.3

Cache

• Added Policy.getIfPresentQuietly to lookup without affecting the metadata (#418)

2.8.2

Cache

• Added optimistic fast path for putIfAbsent to avoid locking (apache/openwhisk#2797)
• Fixed race causing an incorrect removal cause (#412)
• Fixed SCM connection URLs (#394)

JCache

• Prefer the thread context classloader (#387)

2.8.1

JCache

• Allow for using a custom config source (#312)

2.8.0

Cache

• Included the license file in the jar (#325)
• Added RemovalCause to StatsCounter (#304)
• Added getAll support to manual caches (#310)
• Fixed long overflow in statistics (google/guava#3503)
• Added Scheduler for prompt eviction of expired entries (#195)

JCache

• Fixed assigning ticker to cache builder (#313)

2.7.0

Cache

• Added async asMap() view (#156)
• Introduced AsyncCache for manual async cache (#246)
• Fixed async expiration when create races with reads (#298)
• Improved hit rates by using an adaptive eviction policy (#106)
• Fixed refresh to use the stats ticker for recording the load time (#240)
• Rescheduled async maintenance immediately if pending work remains (#225)
• Migrated from JSR-305 annotations to CheckerFramework & ErrorProne (#242)

JCache

• Added config file setting for the executor (#276)

This release includes improvements to the eviction policy by using a hill climber to optimize for frequency or recency. For more details, see the HighScalability article and our paper Adaptive Software Cache Management.