Everything Can Be Subscribed: RSSHub

In the era of information explosion, how to efficiently obtain and manage content scattered across various platforms has become an important topic. RSS technology, as an ancient yet powerful means of information aggregation, is experiencing a renaissance. And RSSHub, as the core driving force behind this revival, has become the world's largest RSS network with its "Everything Can Be RSS" philosophy, with over 5,000 instances running around the globe.

RSSHub is an open-source project created by Chinese developer DIYgod. It has earned nearly 30k stars on GitHub, has over 900 contributors, and processes over 300 million requests every month(32). The core value of this project lies in its ability to convert content from websites that do not natively support RSS subscriptions—especially closed platforms—into standardized RSS feeds, allowing users to centrally manage all the content they follow through RSS readers(106).

I. RSSHub's Technical Architecture and Core Features

1.1 Evolution of Technical Architecture

RSSHub's technical architecture has undergone a major modernization upgrade. The project was originally built on Node.js 10, using the Koa framework to construct the backend service(130). However, as technology advanced, the project faced the issue of an outdated architecture. Many of the "next-generation" technologies of that era had become a thing of the past, making it impossible to adopt modern technologies such as JSX, TypeScript, and Serverless.

To address this, the project author decided to carry out a thorough refactoring, adopting a completely new technology stack(32):

• Web Framework: Upgraded from Koa to Hono
• Programming Language: Migrated from JavaScript to TypeScript