Ehcache invalidating space

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.The most important concern to consider when using the expiration method is balancing data-freshness with database load.The shorter you make the expiration settings - meaning the more “fresh” you try to make the data - the more load you will incur on the database.Another alternative is to validate the cached content at each request.A third option is to not cache content requested by the client.This method functions as an alternative to other methods of displaying new content to connected clients.

There are three specific methods to invalidate a cache, but not all caching proxies support these methods. When the client requests the data again, it is fetched from the application and stored in the caching proxy.This page addresses how to maintain cache “freshness” by configuring TTL and data expiration properly.Data in the cache is out of sync with the SOR (the database).Try out some numbers and see what kind of load your application generates.Even modestly short values such as 5 or 10 minutes will afford significant load reductions.

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A reference to the cached content is added to a blacklist (or ban list).

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