caching - Cassandra -What is really happens once Key-cache get filled -

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consider have configured 1 mb of key-cache (consider can hold 13000 of keys ).

then wrote records in column family(say 20000).

then read @ first (all keys sequentially in same order used write ), , keys started stored in key-cache.

when read reached @ 13000 key cache filled completely.

what happen key-cache when next keys read? (which key removed newly read key ?).

key-cache following fifo or lifo or random out ?.

key cache uses concurrentlinkedhashmap underneath , hence eviction policy lru (least used).

https://code.google.com/p/concurrentlinkedhashmap/#features

https://code.google.com/p/concurrentlinkedhashmap/wiki/design#beyond_lru


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