Memcache - how to make some data less likely to get evacuated?

This sounds like a good argument to use a different memcache server for the data. You have 1 set of memcache servers for data that can vanish. And another memcache server for data YOU REALLY don't want to risk losing though LRU.

The 2nd memcache server is closely monitored for evictions. However, memcache when full, will toss data. So, not really the solution you need Redis, I believe will not throw stuff out.

This sounds like a good argument to use a different memcache server for the data. You have 1 set of memcache servers for data that can vanish. And another memcache server for data YOU REALLY don't want to risk losing though LRU.

The 2nd memcache server is closely monitored for evictions. However, memcache when full, will toss data. So, not really the solution you need.

Redis, I believe will not throw stuff out.

Access it more frequently than other items in your cache.

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