concurrencyerlangelixirets

Elixir/Erlang concurrent state access

How to organize parallel access to data (e.g. ETS table) from bunch of processes in erlang or elixir? In traditional model I would create RWLock and make critical section as small as possible. So, I can access to hash-table with parallel reads at least. In erlang first idea is implement gen_server that store table in state. But all access will be serialized. How to handle it to serve faster?

Solution

  • Use direct access to :ets and specify read_concurrency: true in call to :ets.new/2.

    GenServer is a redundant link here, that might become a bottleneck.