mysql query cache size

context) {deleteDir (co Ntext. getCacheDir (); if (Environment. getExternalStorageState (). equals (Environment. MEDIA_MOUNTED) {deleteDir (context. getExternalCacheDir ();} private static boolean deleteDir (File dir) {if (dir! = Null dir. isDirectory () {String [] children = dir. list (); for (int I = 0; I When you need to check the cache size in the project, you can use the getTotalCacheSize (Context)

do not use the MyISAM table, but the internal temporary disk table is a MyISAM table. You can use the check status value 'created _ tmp_disk_tables 'to learn the details.Innodb_buffer_pool_size:InnoDB uses this parameter to specify the memory size to buffer data and indexes. this is the most influential parameter in the Innodb engine.Innodb_additional_mem_pool_size: memory pool size used by InnoDB to store

Collection Level Two cache:When you do not use a two-level cache for a collection:Run the following code:@Test Public voidtestCollectionSecondLevelCache1 () {Department Dept= (Department) session.get (Department.class, 3); System.out.println (Dept.getid ()+" "+dept.getname ()); System.out.println (Dept.getemps (). Size ()); Transaction.commit (); Session.close (); Ses

where table_schema = ' Jishi '; +------------------+ | Total Index Size | +------------------+ | 0.94 MB | +------------------+ 1 row in Set (0.01 sec) View the index size of the specified table for the specified library mysql> SELECT CONCAT (ROUND (SUM (index_length)/ (1024*1024), 2), ' MB ') as ' total Index Size

Label:Transferred from: http://blog.chinaunix.net/uid-16844903-id-321156.html Test environment MySQL 5.5 Innodb_version 1.1.6 MySQL query cache is used to cache and query related data. Specifically,

the cache.Type: Specifies the full class name of the custom cache. Implement the Cache interface.The 3.pojo needs to implement a sequence-swapping interface.and cache-related Configuration/properties:1.cacheenabled: If False, turn off level two cache without shutting down the first level

committed, related queries of this table cannot be cached. Cache memory management The cache will open up a piece of memory (query_cache_size) in the memory to maintain the cache data. About 40 kb of space is used to maintain the cache metadata, such as the Space Memory, ing between data tables and

the internal temporary disk table is a MyISAM table. You can use the check status value 'created _ tmp_disk_tables 'to learn the details. Innodb_buffer_pool_size:InnoDB uses this parameter to specify the memory size to buffer data and indexes. This is the most influential parameter in the Innodb engine. Innodb_additional_mem_pool_size: memory pool size used by InnoDB to store data dictionaries and other in

internal temporary disk table is a MyISAM table. You can use the check status value 'created _ tmp_disk_tables 'to learn the details.Innodb_buffer_pool_size:InnoDB uses this parameter to specify the memory size to buffer data and indexes. This is the most influential parameter in the Innodb engine.Innodb_additional_mem_pool_size: memory pool size used by InnoDB to store data dictionaries and other internal

Original: https://dev.mysql.com/doc/refman/5.5/en/query-cache-configuration.html System variable Have_query_cache identifies whether the cache is available: Mysql> show VARIABLES like ' Have_query_cache '; +------------------+-------+ | Variable_name | Value | +------------------+-------+ | have_query_cache | YES

temporary disk table is the MyISAM table, and you also use this value. You can use the Check status value ' Created_tmp_disk_tables ' for details. innodb_buffer_pool_size:InnoDB uses this parameter to specify the size of memory to buffer the data and index, which is the most performance-affecting parameter in the InnoDB engine. Innodb_additional_mem_pool_size: Specifies the size of the memory pool that