Field notes from the systems most teams never have to think about.

Most platforms are sized for a number they rarely see. Here's how we plan capacity for the 10x event instead of the median day.

Networks retry, clients double-click, and queues redeliver. Here's how we keep a high-throughput ledger correct to the cent anyway.

Your average response time looks great. Your slowest 1% is quietly costing you users. Here's how we find and fix tail latency.