Library / YouTube
Scaling Live Videos to a Billion Users at Facebook - Sachin Kulkarni, Director of Engineering at Facebook
Sachin Kulkarni talks about why Live matters, how Facebook Live was architected for these requirements and how it is setup to be flexible in adding features ...
By Facebook · Facebook · Added 2026-10-12
All content belongs to Facebook. We only link to it and give credit. Report a problem
Overview before you open it
A talk or video. Watch it with a pause button handy: it is easiest to follow once you know the basic vocabulary.
- Who it suits
- You know the basics (caching, queues, replication) and want to see them applied.
- From
- Facebook: see more from them
- Design areas it touches
- Scaling and performanceReal-time and chatVideo, images and mediaLearning and interview prep
This overview is generated from the title, tags and where we use the resource; it is not a summary of the content. The original is by Facebook.
Study it, do not just read it
Before
Before you open it, spend two minutes sketching how you would build this yourself. Write down the biggest risk you can see.
While you read
- Which number or limit forced their main decision?
- What did they try first, and why did it stop working?
- What did they choose not to build?
After
- What would break first if traffic grew tenfold?
- What did they trade away to get what they wanted?
- Explain the design in three sentences, without looking.
Kept in this browser, and on your account when you sign in. All my notes · Try it in the Builder
Keep learning
Loading community…