v2.3.8 - Show latest stable - 1 note - Class: ActiveSupport::Cache::MemCacheStore
read(key, options = nil) public

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August 13, 2010
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Confusing log output

If you do a single'my_key'), your will usually see in your log something like

Cache read: my_key
Cache read: my_key
Cache write: my_key

Don’t worry about this.

What happens here is this: Before going to memcached, rails will first ask a local MemoryStore cache (which is responsible for the first and third line in the log), before falling through to memcached. This local cache is destroyed after each request.

Source is in activesupport/lib/active_support/cache/strategy/local_cache.rb.