Rails to Phoenix

on YouTube ↗29m

" summary

Bleacher Report rewrites a Rails site into Phoenix and runs at 1/15th of the servers, averaging 10–30 ms with only one spike near 800 ms; independent benchmarks show Phoenix serving 2.5× more records and 4.5× larger payloads while running 1.5–2.5× faster than tuned Rails. Explanation cites Elixir on the BEAM, Plug and Mix tooling, per-process GC, compiled routing, and OTP features; Phoenix scales to two million concurrent WebSocket connections and adds Phoenix Presence to reconcile distributed client state.

AI-written summary · about

" chapters (13)

1. 0:00Intro
2. 0:43Is Performance Enough?
3. 5:19Elixir consumes all CPU cores
4. 5:31Elixir is a compiled language
5. 6:06Phoenix makes smart use of the BEAM
6. 6:35The database is not slow
7. 9:11Can Phoenix's performance benefits free engineers to work on bigger ideas?
8. 10:33Optimize for developer happiness
9. 13:02Variables are immutable
10. 18:29Elixir & Phoenix optimize for long- term developer happiness
11. 20:52Performance is the least interesting thing about Phoenix
12. 24:57Pre-existing domain knowledge speeds up adoption
13. 27:45Implementing features costs less money and requires less engineering support

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