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A comment on Realtime Metrics for 128 Million Users with Redis: 50ms + 16MB RAM. Parent comment

Re:Realtime Metrics for 128 Million Users with Redis: 50ms +... by ewb on Saturday March 24, 2012 @02:39AM (#3748699)
"But I guess you could dump old data to disk and load it back to Redis only when you need it."

Redis has a mode which does this automatically I believe (and it's the default if I remember correctly).

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Re:Realtime Metrics for 128 Million Users with Redis: 50ms +... by Erwin on Saturday March 24, 2012 @04:05AM (#3748834)
Isn't Redis still single-threaded for queries, but saving in the background? That seems a little risky: you've got your 100 million users setting bits in your bitsets and suddenly everything blocks for 10 seconds while old data is being loaded from disk.
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Re:Realtime Metrics for 128 Million Users with Redis: 50ms +... by kijin on Saturday March 24, 2012 @12:23PM (#3749743)
The "virtual memory" feature is now deprecated, I think.
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