Uptime == Money: High Availability
summary
Braintree shows concrete HA work: uptime target ~five nines ($9,500/minute impact), rolling server‑by‑server deploys with pre/post migrations, fast schema work on PostgreSQL so adds/drops are milliseconds, and a queueed front end built from broxy and dispatchers (Apache → broxy → Redis → Ruby dispatchers) that lets dispatchers pause to “freeze” traffic. Outbound proxies (mallerie), LVS/ipvs + pacemaker, BigBrother + LitmusPaper health checks, automation and retries all get measured, built, and proven.
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chapters (7)
- 0:00Introduction to uptime
- 2:55Planned downtime strategies
- 10:55The Broxy architecture
- 17:37Managing server failures
- 23:02Network resilience
- 27:44Mallerie and healing
- 31:36Automation and Q&A
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