Re: Writing the same column frequently - anti pattern?

Hi, If the writes are coming from the same machine, you could potentially use request collapsing to avoid the duplicate writes. Just an idea, Jens On Fri, Feb 6, 2015 at 1:15 AM, Andreas Finke wrote: > Hi, > > we are cur

Re: Writing the same column frequently - anti pattern?

On Thu, Feb 5, 2015 at 4:15 PM, Andreas Finke wrote: > we are currently writing the same column within a row multiple times (up > to 10 times a second). I am familiar with the concept of tombstones in > SSTables. My question is: I assume that in our case in most cases when a > column gets overwr

Re: Writing the same column frequently - anti pattern?

Well... this is actually only true if your server times are perfectly in sync. The reality is if 1 server is 50ms ahead and 1 is 50 behind, your will actually end up with unpredictable results. On Thu Feb 05 2015 at 4:22:43 PM Philip Thompson < philip.thomp...@datastax.com> wrote: > You are corr

Re: Writing the same column frequently - anti pattern?

You are correct. If an overwrite occurs while the original is still in the memtable, only the newest will be flushed to disk. On Thu, Feb 5, 2015 at 6:15 PM, Andreas Finke wrote: > Hi, > > we are currently writing the same column within a row multiple times (up > to 10 times a second). I am fa

Writing the same column frequently - anti pattern?

Hi, we are currently writing the same column within a row multiple times (up to 10 times a second). I am familiar with the concept of tombstones in SSTables. My question is: I assume that in our case in most cases when a column gets overwritten it still resides in the memtable. So I assume for