Package com.espertech.esper.common.internal.epl.historical.datacache
package com.espertech.esper.common.internal.epl.historical.datacache
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ClassDescriptionImplementations serve as caches for historical or reference data retrieved via lookup keys consisting or one or more rows represented by a list of events.For use in iteration over historical joins, a
HistoricalDataCache
implementation that serves to hold EventBean rows generated during a join evaluation involving historical streams stable for the same cache lookup keys.Implements an expiry-time cache that evicts data when data becomes stale after a given number of seconds.Factory for data caches for use caching database query results and method invocation results.Query result data cache implementation that uses a least-recently-used algorithm to store and evict query results.Null implementation for a data cache that doesn't ever hit.