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  1. Infinispan
  2. ISPN-1341

Should document that FIFO as an eviction policy is deprecated

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Details

    • Bug
    • Resolution: Done
    • Minor
    • 5.1.0.CR4
    • 5.0.0.FINAL
    • Eviction

    Description

      When a cache is created with eviction strategy set to FIFO it is actually treated as being LRU. This can be seen in org.infinispan.container.DefaultDataContainer.java.
      Functional test for FIFO eviction can be found at https://svn.devel.redhat.com/repos/jboss-qa/edg/edg-functional-tests/trunk/ in the eviction-strategy module.
      Basically what the test does is insert 3 values into the cache then retrieves the first value(to differentiate FIFO and LRU) and inserts 4th value which sets eviction in motion because of maxEntries=3.
      I would expect the first entered value ("A") to be evicted instead it evicts the second ("B").
      It uses the following cache configuration:

      <local-cache 
          name="fifo"
          start="EAGER"
          batching="false"
          indexing="NONE">
          <locking
              isolation="REPEATABLE_READ"
              acquire-timeout="20000"
              concurrency-level="500"
              striping="false" />
          <eviction 
              strategy="FIFO" 
              max-entries="3" 
              interval="2000"/>
      </local-cache>
      

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            vblagoje Vladimir Blagojevic (Inactive)
            jvilkola Jozef Vilkolak (Inactive)
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              Updated:
              Resolved: