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system-design-101/data/guides/how-does-twitter-recommend-tweets.md
Kamran Ahmed ee4b7305a2 Adds ByteByteGo guides and links (#106)
This PR adds all the guides from [Visual
Guides](https://bytebytego.com/guides/) section on bytebytego to the
repository with proper links.

- [x] Markdown files for guides and categories are placed inside
`data/guides` and `data/categories`
- [x] Guide links in readme are auto-generated using
`scripts/readme.ts`. Everytime you run the script `npm run
update-readme`, it reads the categories and guides from the above
mentioned folders, generate production links for guides and categories
and populate the table of content in the readme. This ensures that any
future guides and categories will automatically get added to the readme.
- [x] Sorting inside the readme matches the actual category and guides
sorting on production
2025-03-31 22:16:44 -07:00

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How does Twitter recommend “For You” Timeline in 1.5 seconds? Twitter's "For You" timeline recommendation system explained. https://assets.bytebytego.com/diagrams/0121-twitter-serving-pipeline.jpeg 2024-02-22 false
real-world-case-studies
System Design
Recommendation Systems

We spent a few days analyzing it.

The diagram above shows the detailed pipeline based on the open-sourced algorithm.

The process involves 5 stages:

  • Candidate Sourcing ~ start with 500 million Tweets
  • Global Filtering ~ down to 1500 candidates
  • Scoring & Ranking ~ 48M parameter neural network, Twitter Blue boost
  • Filtering ~ to achieve author and content diversity
  • Mixing ~ with Ads recommendation and Who to Follow

The post was jointly created by ByteByteGo and Mem. Special thanks Scott Mackie, founding engineer at Mem, for putting this together.

Mem is building the worlds first knowledge assistant. In next weeks ByteByteGo guest newsletter, Mem will be sharing lessons theyve learned from their extensive work with large language models and building AI-native infrastructure.