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.
Comments
"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).
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.
The "virtual memory" feature is now deprecated, I think.