Open Source Linux

Apr 9, 2021 · Operations

How Replit Cut REPL Startup Time from 2 Minutes to 15 Seconds by Fixing Docker Shutdown

Replit engineers discovered that slow Docker container shutdown on preemptible VMs caused REPL sessions to hang for up to a minute, and by bypassing Docker’s kill process and directly terminating container PIDs they reduced error rates from 3% to under 0.5% and cut 99th‑percentile startup time from two minutes to fifteen seconds.