One of our production web application runs on a dedicated node in DO (Digital Ocean) cloud server. This web application has following services running. Elixir Phoenix API server React.js client server Redis caching server Bots (Slack) Few days back, Digital Ocean triggered an urgent maintenance for Meltdown and Spectre Mitigations resulting into a reboot of our PROD server. DO did alert us in advance by sending an email notification with schedules. But seems we missed these schedules accidentally. Thus, our PROD web application was suddenly down after this auto reboot / restart by DO forced maintenance. We realised that we