caching - Can Redis use disk as part of a LRU cache? -

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we have need distributed lru cache, 1 can use both memory , disk. have large dataset, stored on disk permenantly. dataset, create other calculated datasets, when clients need them.

since these secondary datasets derived data persistent, never need permanently save derived data.

i thought redis have ability use disk secondary lru cache, have not been able find documentation points that. seems redis uses disk persist entire cache. envisioned we'd able scale out horizontally bunch of redis instances.

if redis can not this, there system does?

if data not fit memory, os can swap out disk. called virtual memory. here find explanation: http://redis.io/topics/virtual-memory

remark: want retrieve data, stuff on , have intermediate results. please check whether may want distribute processing, not data. take @ apache hadoop , apache spark.


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