7 ms·

Thanks for clearing that up. We have been dealing with the weird spikes as well and so we were a little iffy about Cassandra on EC2.

• bd 17y ago
  For the moment, Reddit is using Cassandra just for persistent cache, which implies high read/write ratio. Also it seems most of reads are done from the memory anyways (they mentioned 6GB RAM for 94% of their database in old memcachedb setting [1]). So much less stress on I/O for this particular use-case. [1] http://blog.reddit.com/2010/03/and-fun-weekend-was-had-by-all.html http://blog.reddit.com/2010/03/and-fun-weekend-was-had-by-al...
  • jbellis 17y ago
    Very good points, thanks!
  • jayair 17y ago
    Thats a good point. My understanding is that Cassandra is ideal for write heavy scenarios. So it is interesting to see a slightly different use case.