/plushcap/analysis/ably/ably-scaling-pub-sub-with-websockets-and-redis

Scaling Pub/Sub with WebSockets and Redis

What's this blog post about?

There is an increasing demand for real-time data delivery as users expect faster experiences and instantaneous transactions. This requires not only lower latency per message but also the ability to handle far greater capacity in a globally-distributed manner. To address these requirements, WebSocket has become the dominant protocol for real-time web applications, offering persistent, fully-duplexed connections to achieve low latency requirements. Publish/Subscribe (pub/sub) has been around longer and enables providers to scale data transmission systems dynamically, which is crucial for providing new capacity needs. A simple pub/sub service can be built with WebSocket and Redis, but at scale, additional complexities such as message persistence, horizontal scaling, disaster recovery, and authentication need to be addressed. Ably provides a globally distributed pub/sub service that handles these difficulties, offering a comprehensive, managed Pub/Sub solution that allows developers to focus on their core application without the overhead of managing complex infrastructure.

Company
Ably

Date published
Dec. 19, 2024

Author(s)
Steven Lindsay

Word count
3664

Language
English

Hacker News points
None found.


By Matt Makai. 2021-2024.