Query Cache Information Plugin
You are viewing an old version of this article. View
the current version here.
MariaDB starting with 5.5.31
This plugin was first released in MariaDB 5.5.31
Contents
The QUERY_CACHE_INFO
plugin allows you to see the contents of the query cache. It creates the QUERY_CACHE_INFO table in the INFORMATION_SCHEMA database that shows all queries that are in the cache. You must have the PROCESS
privilege (see GRANT) to use this table. Querying of this table acquires the query cache lock and will result in lock waits for queries using/expiring the query cache.
Versions
Version | Status | Introduced |
---|---|---|
1.0 | Stable | MariaDB 10.1.13 |
1.0 | Gamma |
Installation
The plugin is installed in the usual way (see Installing plugins), for example:
INSTALL PLUGIN query_cache_info SONAME 'query_cache_info';
Example
select statement_schema, statement_text, result_blocks_count, result_blocks_size from information_schema.query_cache_info; +------------------+------------------+---------------------+--------------------+ | statement_schema | statement_text | result_blocks_count | result_blocks_size | +------------------+------------------+---------------------+--------------------+ | test | select * from t1 | 1 | 512 | +------------------+------------------+---------------------+--------------------+
Comments
Comments loading...
Content reproduced on this site is the property of its respective owners,
and this content is not reviewed in advance by MariaDB. The views, information and opinions
expressed by this content do not necessarily represent those of MariaDB or any other party.