Clear the cache

POST /{index}/_cache/clear

Copy endpoint

Clear the cache of one or more indices. For data streams, the API clears the caches of the stream's backing indices.

By default, the clear cache API clears all caches. To clear only specific caches, use the fielddata, query, or request parameters. To clear the cache only of specific fields, use the fields parameter.

Required authorization

Index privileges: manage

Parameters

path Path Parameters

Name	Type
`index` required Comma-separated list of data streams, indices, and aliases used to limit the request. Supports wildcards (``). To target all data streams and indices, omit this parameter or use `` or `_all`.	type TypesIndices = type TypesIndexName = string \| type TypesIndexName = string[]

query Query Parameters

Name	Type
`index` Comma-separated list of data streams, indices, and aliases used to limit the request. Supports wildcards (``). To target all data streams and indices, omit this parameter or use `` or `_all`.	type TypesIndices = type TypesIndexName = string \| type TypesIndexName = string[]
`allow_no_indices` If `false`, the request returns an error if any wildcard expression, index alias, or `_all` value targets only missing or closed indices. This behavior applies even if the request targets other open indices.	boolean
`expand_wildcards` Type of index that wildcard patterns can match. If the request can target data streams, this argument determines whether wildcard expressions match hidden data streams. Supports comma-separated values, such as `open,hidden`.	type TypesExpandWildcards = type TypesExpandWildcard = "all" \| "open" \| "closed" \| "hidden" \| "none" \| type TypesExpandWildcard = "all" \| "open" \| "closed" \| "hidden" \| "none"[]
`fielddata` If `true`, clears the fields cache. Use the `fields` parameter to clear the cache of specific fields only.	boolean
`fields` Comma-separated list of field names used to limit the `fielddata` parameter.	type TypesFields = type TypesField = string \| type TypesField = string[]
`ignore_unavailable` If `false`, the request returns an error if it targets a missing or closed index.	boolean
`query` If `true`, clears the query cache.	boolean
`request` If `true`, clears the request cache.	boolean

Responses

200 application/json

interface TypesShardsOperationResponseBase {
_shards?:

TypesShardStatistics

interface TypesShardStatistics {
failed: TypesUint;
successful: TypesUint;
total: TypesUint;
failures?: TypesShardFailure[];
skipped?: TypesUint;
}

;
}