Hi: I need some function which requires some message exchange among different back-ends （connections). specially I need a shared hash map and a message queue.
Message queue: it should be many writers, 1 reader. Looks POSIX message queue should be OK, but postgre doesn't use it. is there any equivalent in PG? shared hash map: the number of items can be fixed and the value can be fixed as well. any keywords or explanation will be extremely helpful. Thanks
