RQ
Explore how to implement queue-based distribution in Python using the RQ library. Understand how RQ works with Redis to enqueue and process jobs asynchronously, manage workers, and monitor queues. This lesson helps you build distributed systems with simple, functional job execution and introduces RQ's dashboard for task visualization.
We'll cover the following...
The RQ library provides a simple and direct approach to implement a queue in any Python program. The letters R and Q are used to designate Redis and queue; this accurately summarizes what this library is trying to achieve.
Redis is an open-source in-memory database project implementing a networked, in-memory key-value store with optional durability. It supports different kinds of abstract data structures, among them strings, lists, maps, sets, and sorted sets. That makes it a nice fit for implementing a simple queue mechanism.
Note: All the examples in this section assume that you have a Redis server. We already run a Redis server as a daemon when the Run button is clicked on a widget, so you do not need to worry about starting the ...