New and Noteworthy

  • SLF4J support added

Bug fixes

If something is listed here it might affect an existing application and updating is recommended.

  • OSGi: Add missing export of package org.cache2k.configuration
  • Fix size methods (was stack overflow): Cache.asMap().values().size(), Cache.asMap().entrySet().size(), Cache.asMap().keySet().size(), closes: https://github.com/cache2k/cache2k/issues/51
  • Cache.asMap(): Fix equals() implementation, correct optional null support
  • Simplified metric gathering, removed superfluous internal counters

  • Fix unnecessary hash table growth when concurrent inserts in different segments each trigger an expand

Fixes and Improvements

  • improve robustness for close() / improve consistent behavior and avoid misleading exceptions when a closing/close cache is accessed
  • Cache2kBuilder.entryCapacity(Long.MAX_VALUE) means capacity is unlimited. Fixed internal integer overflows when this is used.
  • improve entry iterator: Immediately throws a CacheClosedException when the cache gets closed during an iteration. internal references of the iterator at the end of iteration to prevent memory leaks.
  • Rename JMX property: getRefreshHitCnt -> getRefreshedHitCnt
  • Rename JMX property: getRefreshSubmitFailedCnt -> getRefreshFailedCnt
  • Limit loader latency value to three fractions in toString() result, thus avoid: msecs/load=833.2831546786805
  • Dropped separate usage counter. Use read usage (get) or write usage (put) counters.
  • strip some internal info from the toString() output
  • toString(): Fix output of used cache implementation and added eviction implementation
  • JMX: strip some JMX properties
  • Simplify hashQuality metric

API Changes and new methods

Using this cache2k version

For Java SE/EE environments

    <dependency>
      <groupId>org.cache2k</groupId>
      <artifactId>cache2k-api</artifactId>
      <version>0.28-BETA</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>org.cache2k</groupId>
      <artifactId>cache2k-all</artifactId>
      <version>0.28-BETA</version>
      <scope>runtime</scope>
    </dependency>

For Android

    <dependency>
      <groupId>org.cache2k</groupId>
      <artifactId>cache2k-api</artifactId>
      <version>0.28-BETA</version>
    </dependency>
    <dependency>
      <groupId>org.cache2k</groupId>
      <artifactId>cache2k-core</artifactId>
      <version>0.28-BETA</version>
      <scope>runtime</scope>
    </dependency>

Using the JCache / JSR107 provider

    <dependency>
      <groupId>org.cache2k</groupId>
      <artifactId>cache2k-jcache</artifactId>
      <version>0.28-BETA</version>
    </dependency>
    <dependency>
      <groupId>javax.cache</groupId>
      <artifactId>cache-api</artifactId>
      <version>1.0.0</version>
    </dependency>

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Version: 1.0.0.CR4. Last Published: 2017-03-21.