Production engineering when trading billions of dollars a day [video] | Hacker News

A Hacker News discussion about production engineering for high-volume trading systems focused on uptime, maintenance, and settlement reliability.

Banks and trading firms operate with much stricter availability, rollback, and data-consistency requirements than typical consumer services.

The discussion highlighted manual controls, zero-downtime maintenance, blue-green and canary approaches, and the limits of moving to longer or continuous trading hours.

It also explored how 24/7 markets, including crypto exchanges, change expectations around market close, clearing, and reconciliation.