[antirez]

IMHO this other use of Redis inside Crashlytics, doing heavy use of bitmaps, is more interesting:

http://www.slideshare.net/crashlytics/crashlytics-on-redis-a...

[thezilch]

Indeed... as presented before:

http://blog.getspool.com/2011/11/29/fast-easy-realtime-metri...

And the HN posts / comments:

https://news.ycombinator.com/item?id=3292542 http://news.ycombinator.com/item?id=3748239

And the Redis warning on setting large bitmaps (Re: split your bitmaps):

http://redis.io/commands/setbit

Note: I know I'm responding to someone who is probably already aware of this information, but the crashly slides are lite on the techniques technical side.

[js4all]

I totally agree, tracking using bitmaps is something where Redis really shines and it is relevant for nearly every site.