Invalidating query cache
It also makes it more difficult, but not impossible, to cause yourself memory problems from caching huge resultsets.I'm 80% convinced that a truly generic query cache is not feasible while also maintaining good performance.Cache Machine extends the may be a string, instead of a list, if you only have one server.If you require the default cache backend to be a different type of cache backend or want Cache Machine to use specific cache server options simply define a separate can be cached, but they cannot be reliably invalidated.There are different Query Cache Backend’s for different versions of django; call Because queries are cached forever, it’s absolutely essential that stale data is never accessible in the cache.Since keys are never actually deleted, but merely made inaccessible by the progression of a table’s generation, “invalidation” in this context is the modification of a table’s generation key.
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By default, Looker caches the result of any report for 1 hour (5 minutes by default for instances on versions Looker 4.2 and below).The following would be two queries, not one: Transactions represent an interesting problem to caches like Johnny.
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