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