[erlang-questions] ets:update_counter/3 optimal settings

[Alex S.]

Sounds right to me, with the caveat that read + reset to zero can lose some data if you are preempted between those two calls. My usual approach is read and decrement by -N, where N is the value I just read.
> 9 июня 2017 г., в 8:44, Frank Muller <frank.muller.erl@REDACTED> написал(а):
> 
> Hi Everyone,
> 
> I've some troubles to understand the optimal settings for this little simple problem:
> 
> Two Erlang processes A and B.
> 
> 1. Process A randomly increments a counter during its lifetime using "ets:update_counter/3"
> 
> 2. Process B reads the counter every X seconds and reset it to 0.
> 
> I decided to use these options when creating the table:
> 
> {write_concurrency, true}, %% A and B
> {read_concurrency, false}  %% only B
> 
> Are these settings correct and more importantly "optimal" (please elaborate your answer)?
> 
> /Frank
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