Erlang PostgreSQL Connection Pool * Application epgsql_pool will create any pools defined in the application's 'pools' environment parameter, which is a list of atoms. Each atom must refer to an environment parameter with the same name and value {Size, Opts} where Opts is a property list with the following supported options: host - host to connect to, default "localhost". port - port to connect to, default 5432. username - username to authenticate with, default os:getenv("USER"). password - password to authenticate with, default "". database - database to connect to, no default. .config file example: {epgsql_pool, [{pools, [db1, db2]}, {db1, {10, [{database, "db1"}]}}, {db2, {10, [{database, "db2"}]}}]} * Pool Usage {ok, C} = pgsql_pool:get_connection(Pool, Timeout). Pool - Pid or Name of pool. Timeout - Time, in milliseconds, to wait for a free connection. ok = pgsql_pool:return_connection(Pool, Connection). * Details epgsql_pool monitors the process which called get_connection and returns the allocated connection to the pool if that process dies. If a connection dies, a new one is created and added to the pool in its place.