Be Like Netflix - Building a CDN from Scratch
summary
A production CDN was built for a Polish operator with four node types: cache edge servers, traffic routers, analytics collectors and a config backend across 40+ servers. Routing logic uses OpenResty/LuaJIT, metrics are gathered with Telegraf and long‑term analytics stored in ClickHouse; traffic distribution uses a consistent‑hashing ring with probabilistic failover to absorb sudden popularity spikes. HTTPS is handled with hardware certificate offload, and realistic tests show about 15k TLS requests/sec per node.
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chapters (8)
- 0:00Introduction
- 6:56CDN architecture
- 11:32Technologies and tools
- 20:26Load balancing
- 26:30Performance tests
- 33:31High availability
- 36:48Lessons learned
- 40:49Q&A
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