Invalidating query cache entries table mysql

You will not be able to do point in time recovery See THREADS Current thread_cache_size = 8 Current threads_cached = 7 Current threads_per_sec = 0 Historic threads_per_sec = 0 Your thread_cache_size is fine MAX CONNECTIONS Current max_connections = 151 Current threads_connected = 1 Historic max_used_connections = 18 The number of used connections is 11% of the configured maximum. If you are unable to optimize your queries you may want to increase your join_buffer_size to accommodate larger joins in one pass. This script will still suggest raising the join_buffer_size when ANY joins not using indexes are found.OPEN FILES LIMIT Current open_files_limit = 1561 files The open_files_limit should typically be set to at least 2x-3x that of table_cache if you have heavy My ISAM usage.Cacheable Result [email protected] value: [5872026465492992, 1] Jdbc Transaction - committed JDBC Connection ------------------------------------------------------------ Query Cache Test - Check get entity is cached Jdbc Transaction - committed JDBC Connection ------------------------------------------------------------ Query Cache Test - Check query is cached Standard Query Cache - Checking cached query results in region: org.hibernate.cache.internal.Standard Query Cache Standard Query Cache - Checking query spaces are up-to-date: [Post] Ehcache General Data Region - key: Post Update Timestamps Cache - [Post] last update timestamp: 5872026465406976, result set timestamp: 5872026465492992 Standard Query Cache - Returning cached query results Jdbc Transaction - committed JDBC Connection Ehcache General Data Region - key: sql: select querycache0_as id1_1_, querycache0_.author_id as author_i4_1_, querycache0_.created_on as created_2_1_, querycache0_as name3_1_ from Post querycache0_ inner join Author querycache1_ on querycache0_.author_id=querycache1_where querycache1_.id=?The reason for its disabling, is that the query cache does not scale with high-throughput workloads on multi-core machines.This is due to an internal global-lock, which can often be seen as a hotspot in performance_schema.In the next example, we are going to cache the following query: Query Cache Test - Evict regions and run query Standard Query Cache - Checking cached query results in region: org.hibernate.cache.internal.Standard Query Cache Ehcache General Data Region - Element for key sql: select querycache0_as id1_1_, querycache0_.author_id as author_i4_1_, querycache0_.created_on as created_2_1_, querycache0_as name3_1_ from Post querycache0_ order by querycache0_.created_on desc; parameters: ; named parameters: ; max rows: 10; transformer: org.hibernate.transform.

They can, however, be configured to regularly expire cached data.The ideal scenario for the query cache tends to be largely read-only, where there are a number of very expensive queries which examine millions of rows only to return a few.A hypothetical example might be a complex query to build a list of values for a drop-down list that always appears on a webpage form.The Second Level Cache is designed to reduce the amount of necessary database access.It sits between your application and the database to avoid the number of database hits as much as possible.For Hibernate to cache a given query result, we need to explicitly set the cachable query attribute when creating the Query.

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