`bundle install` Y U SO SLOW: Server Edition

on YouTube ↗37m

" summary

Explains extracting the dependency endpoint into a separate Sinatra service and running the Bundler API on Heroku that serves marshalled dependency payloads from a local Postgres cache built from rubygems tables; replaces the slow specs. Sync moves from a 16-minute run to 2–3 minutes after switching the sequential updater to a consumer thread pool and adding webhook support; initial polling used the 1.2MB modern index and consumed ~380% CPU on the original box. Prototypes a replay service using Heroku HTTP log drains to replay production traffic and compare MRI vs JRuby (95th‑percentile latency spikes observed).

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" chapters (9)

1. 0:00Introduction and speaker intro
2. 3:57Why bundler exists and its slowness
3. 9:59Bundler API speed improvements
4. 12:03RubyGems.org downtime analysis
5. 14:36Extracting API into separate service
6. 17:44Syncing code and caching metadata
7. 21:15Polling and webhooks updates
8. 25:16Bundler API replay project
9. 33:26Q&A on gem signing and performance

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