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cache2k v1.9.1.Alpha Release Notes

Release Date: 2020-10-13 // over 3 years ago

  • 🚀 This is a preview release for evaluation purposes and should not be used in production.

    The preview is in preparation for version 2 which will have some major breaking changes to the previous releases. The final release will be 2.0.0.Final - "North Atlantic".

    🆕 New and Noteworthy

    • cache2k-api, cache2k-core, cache2k-jmx and cache2k-config are fully modularized
    • Requires at least Java 8 to run
    • 🔧 Adaptions to Java 8 on API level. E.g. use of Duration in the configuration
    • 🆕 New interfaces for CacheLoader and CacheWriter
    • 🗄 Removal of deprecated classes and methods
    • 🔧 JMX and XML configuration support is no longer part of cache2k-core
    • 👀 OSGi support with cache2k-osgi-all removed, see: #83

    Possible Breakages

    🚀 Since this is a major release, some rarely used things in the API are changed without backwards compatibility. Most code is supposed to run without breaking.

    • Requires at least Java 8 to run
    • ✂ Remove deprecated classes and methods: Cache.prefetch, Cache.prefetchAll, IntCache, LongCache,
      CacheEntry.getLastModification, AbstractCacheEntry
    • Incompatible change of CustomizationSupplier interface
    • 🚚 org.cache2k.integration.ResiliencePolicy removed. Replaced by: org.cache2k.io.ResiliencePolicy
    • 🚚 JMX support moved from cache2k-core to cache2k-jmx to minimize module dependencies
    • 🔧 XML configuration moved from cache2k-core to cache2k-config to minimize module dependencies
    • ⬇️ Dropped apache commons logging support. Commons logging seems to be not
      👍 maintained any more and lacks Jigsaw/module support.
    • ⬇️ Drop support for XML configuration on Android, removed XML pull dependency
      👍 (The Android will be potentially unsupported in cache2k V2 at first)
    • 🔧 Moved JCache configuration classes in org.cache.jcache from cache2k-api to cache2k-jcache.
      If these are used, cache2k-jcache needs to be in compile scope.
    • Cache2kConfiguration: Changed all parameters of type long, representing
      milliseconds to type Duration

    API Changes

    • 📦 org.cache2k.integration.CacheLoader and everything in package org.cache2k.integration
      🗄 is deprecated. Replacements are available in org.cache2k.io. This major change was done to
      🔄 change from abstract classes to interface. The new package was introduced for smoother transition
      🗄 to keep the previous classes and deprecated them.
    • ➕ Add Cache.loadAll and Cache.reloadAll which return CompletableFuture
      🗄 Old methods which use CacheOperationCompletionListener are deprecated
    • ✂ Remove deprecated classes and methods: Cache.prefetch, Cache.prefetchAll, IntCache, LongCache,
      CacheEntry.getLastModification, AbstractCacheEntry

    🛠 Fixes and Improvements

    • All cache customizations (e.g. CacheLoader) implement Customization.
    • 🚚 Speedup of internal hash table, because compatibility for Java 6 could be removed