OpenSearch/docs/reference/indices/refresh.asciidoc

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[[indices-refresh]]
=== Refresh API
++++
<titleabbrev>Refresh</titleabbrev>
++++
Refreshes one or more indices.
[source,console]
----
POST /twitter/_refresh
----
// TEST[setup:twitter]
[[refresh-api-request]]
==== {api-request-title}
`POST <index>/_refresh`
`GET <index>/_refresh`
`POST /_refresh`
`GET /_refresh`
[[refresh-api-desc]]
==== {api-description-title}
Use the refresh API to explicitly refresh one or more indices.
A _refresh_ makes all operations performed on an index
since the last refresh
available for search.
// tag::refresh-interval-default[]
By default, Elasticsearch periodically refreshes indices every second, but only on
indices that have received one search request or more in the last 30 seconds.
// end::refresh-interval-default[]
You can change this default interval
using the <<index-refresh-interval-setting,`index.refresh_interval`>> setting.
[IMPORTANT]
====
Refreshes are resource-intensive.
To ensure good cluster performance,
we recommend waiting for {es}'s periodic refresh
rather than performing an explicit refresh
when possible.
If your application workflow
indexes documents and then runs a search
to retrieve the indexed document,
we recommend using the <<docs-index_,index API>>'s
`refresh=wait_for` query parameter option.
This option ensures the indexing operation waits
for a periodic refresh
before running the search.
====
[[refresh-api-path-params]]
==== {api-path-parms-title}
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=index]
+
To refresh all indices in the cluster,
omit this parameter
or use a value of `_all` or `*`.
[[refresh-api-query-params]]
==== {api-query-parms-title}
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=allow-no-indices]
+
Defaults to `true`.
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=expand-wildcards]
+
Defaults to `open`.
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=index-ignore-unavailable]
[[refresh-api-example]]
==== {api-examples-title}
[[refresh-api-multiple-ex]]
===== Refresh several indices
[source,console]
----
POST /kimchy,elasticsearch/_refresh
----
// TEST[s/^/PUT kimchy\nPUT elasticsearch\n/]
[[refresh-api-all-ex]]
===== Refresh all indices
[source,console]
----
POST /_refresh
----