Clear the cache
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.
Query parameters
-
allow_no_indices boolean
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. -
expand_wildcards string | array[string]
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
. Valid values are:all
,open
,closed
,hidden
,none
. -
fielddata boolean
If
true
, clears the fields cache. Use thefields
parameter to clear the cache of specific fields only. -
fields string | array[string]
Comma-separated list of field names used to limit the
fielddata
parameter. -
query boolean
If
true
, clears the query cache. -
request boolean
If
true
, clears the request cache.
curl \
-X POST http://api.example.com/_cache/clear
{
"_shards": {
"failed": 42.0,
"successful": 42.0,
"total": 42.0,
"failures": [
{
"index": "string",
"node": "string",
"reason": {
"type": "string",
"reason": "string",
"stack_trace": "string",
"caused_by": {},
"root_cause": [
{}
],
"suppressed": [
{}
]
},
"shard": 42.0,
"status": "string"
}
],
"skipped": 42.0
}
}