100kb should be fine. For larger values, there's been a lot of people doing "file chunking" for a while now. The Astyanax folks have a recipe for this: https://github.com/Netflix/astyanax/wiki/Chunked-Object-Store
The DataStax Enterprise CassandraFileSystem impl works similarly. Your intuition is correct though. In general, it's best to avoid big values for individual columns as that causes memory pressure (and can hog resources unnecessarily if you are using thrift). On Mon, Jul 8, 2013 at 12:46 PM, S Ahmed <sahmed1...@gmail.com> wrote: > I'm guessing that most people use cassandra to store relatively smaller > payloads like 1-5kb in size. > > Is there anyone using it to store say 100kb (1/10 of a megabyte) and if so, > was there any tweaking or gotchas that you ran into?