Invalidating query cache entries table replication ten rules for dating my daughter joke
Queries that happened a month ago are probably no longer useful now.
So if it's storing those query results then it's completely worthless because chances are no one is going to run that same exact query again.
That is, even if the query cache is not enabled, the mutex (slow, by nature) to access the (not existing) query cache is acquired for every binlog event.
The only way to not acquire the query cache mutex in My SQL pre-5.5 is to compile My SQL without query cache.
For example, consider a product catalog table with a column of “product_id.” The application issues select or update queries to retrieve or update data from the table using “product_id.” Scale Arc uses the “product_id” value as the metadata to tag the cache objects internally.
For earlier Word Press versions use plugin version 2.1.10 I am ready to answer on your questions about this plugin usage and help with possible problems.Configuring Infinispan threads Just as for the JGroups transport, you can externalize your Infinispan thread configuration, moving it into the thread pool subsystem.Have you ever been in a situation where a not optimal an awful query was killing your databases, yet you could not do anything about it because it needed to be modified in the application that is maintained by somebody else?Have you been asked to diagnose issues caused by database nodes that constantly switch between online and offline?Users can then add invalidation patterns to an invalidation group that manipulates the same table and column.
It looks like some sort of dead lock, but I cannot understand why.) - and move your way up as the read performance increases without reaching "Waiting for query cache lock" on writes."Be cautious about sizing the query cache excessively large, which increases the overhead required to maintain the cache, possibly beyond the benefit of enabling it.