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
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 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!
