Concurrent message queuing replaces Redis or RabbitMQ

Moment at 2:38 in I replaced my entire stack with Postgres... by The Coding Gopher.

Instead of using RabbitMQ or Redis, Postgres uses the `FOR UPDATE SKIP LOCKED` clause to turn standard tables into **weight-free message queues** capable of high-concurrency job processing

Saved by George Vanous 🌱.