Ian, Have you been able to measure the performance penalty of running at CL=ALL ? Right now I'm spreading updates over such counter columns across workers so they don't overlap keys and that way I don't go to CL=ALL but maybe that's not worth it? Any input?
Thanks Philippe 2011/6/10 Ian Holsman <[email protected]> > Hi AJ. > > Counters are really cool for certain things.. > > The main benefit (from a high level perspective) is that you don't have to > read the record in to find the old value. (and stick a lock on the record to > prevent it from changing underneath you). > > what I use them for is to increment page-views. I just read a log-line in, > and can update the rows without having to read it beforehand.. which is nice > performance wise. > > On Jun 10, 2011, at 2:18 PM, AJ wrote: > > > I can't find any that gives an overview of their purpose/benefits/etc, > only how to code them. I can only guess that they are more efficient for > some reason but don't know exactly why or exactly what conditions I would > choose to use them over a regular column. > > > > Thanks! > >
