[erlang-questions] Design question -- a valid or foolhardy approach to ets update?

Mihai Balea <>
Tue Jul 14 17:25:01 CEST 2009


On Jul 14, 2009, at 10:28 AM, Ulf Wiger wrote:
>
> From the documentation of ets:new(...):
>
> "{write_concurrency,bool()}
> Performance tuning. Default is false, which means that the table is  
> optimized towards concurrent read access. An operation that mutates  
> (writes to) the table will obtain exclusive access, blocking any  
> concurrent access of the same table until finished. If set to true,  
> the table is optimized towards concurrent write access. Different  
> parts of the same table can be mutated (and read) by concurrent  
> processes. This is achieve to some degree at the expense of single  
> access and concurrent reader performance. Table typ ordered_set is  
> not affected by this option in current implementation."

Good stuff, I wasn't aware of that.

Mihai


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