insert/find/delete with Ets

gistfile1.txt

-module(sc_store).

-export([
         init/0,
         insert/2,
         delete/1,
         lookup/1
        ]).

-define(TABLE_ID, ?MODULE).

init() ->
    ets:new(?TABLE_ID, [public, named_table]),
    ok.

insert(Key, Pid) ->
    ets:insert(?TABLE_ID, {Key, Pid}).

lookup(Key) ->
    case ets:lookup(?TABLE_ID, Key) of
        [{Key, Pid}] -> {ok, Pid};
        [] -> {error, not_found}
    end.

delete(Pid) ->
    ets:match_delete(?TABLE_ID, {'_', Pid}).