2015-06-26 10:31:38 -04:00
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[[query-cache]]
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=== Node Query Cache
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The query cache is responsible for caching the results of queries.
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There is one queries cache per node that is shared by all shards.
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The cache implements an LRU eviction policy: when a cache becomes full, the
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least recently used data is evicted to make way for new data.
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The query cache only caches queries which are being used in a filter context.
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The following setting is _static_ and must be configured on every data node in
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the cluster:
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`indices.queries.cache.size`::
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Controls the memory size for the filter cache , defaults to `10%`. Accepts
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either a percentage value, like `5%`, or an exact value, like `512mb`.
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2016-04-07 09:46:32 -04:00
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The following setting is an _index_ setting that can be configured on a
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per-index basis:
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`index.queries.cache.enabled`::
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Controls whether to enable query caching. Accepts `true` (default) or
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`false`.
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