Invalidating query cache mysql

19 Feb

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.Since then the replication process lags a lot behind the master with the line in the process list of: invalidating query cache entries (table).the global Were the size and type set to 0 when the server was started, or later?

The query cache has been disabled-by-default since My SQL 5.6 (2013) as it is known to not scale with high-throughput workloads on multi-core machines.Rene confirmed this in his post yesterday, but it has also previously been mentioned by Stewart Smith, Domas Mituzas (update: and Kristian Koehntopp).Assuming that scalability could be improved, the limiting factor of the query cache is that since only queries that hit the cache will see improvement; it is unlikely to improve We concur with the research performed by Jiamin Huang, Barzan Mozafari, Grant Schoenebeck, Thomas F. We considered what improvements we could make to query cache versus optimizations that we could make which provide improvements to . I haven't touched anything such as reseting query cache for the year that the game has been up, I'm working with about 5000-1million rows depending on the table.Everything is being updated constantly and things being inserted into the tables.