ReadMeFeed / Community knowledge
Real questions. Useful conversations. Find the people who know your stack.
Deploying on Scalingo can cause brief 502s if containers are slow to warm up. Pairing Preboot with explicit Postgres connection budgeting avoids the spike and keeps releases smooth.
A concise, step‑by‑step guide to performing zero‑downtime rolling updates of a Nomad job, covering prerequisites, job configuration, deployment commands, validation checks, and rollback options.
Learn how PM2’s `reload` command achieves graceful restarts, the minimal architecture needed, data boundaries to avoid state loss, operational checks, and when to rethink the design.
Learn how to upgrade a PostgreSQL cluster from an older major version to a newer one with only seconds of downtime by using logical replication, covering prerequisites, step‑by‑step commands, verification, and recovery.
Learn how to implement zero-downtime updates in Erlang using hot code loading, focusing on fully qualified calls and state compatibility.
PM2's reload command enables zero-downtime deployments by spawning a new worker with updated code, then gracefully shutting down the old one after it finishes active requests. This eliminates the gap in service availability that comes from traditional restart approaches.
Configure PM2 cluster mode for true zero-downtime reloads: ecosystem file settings, graceful shutdown signals, ready protocol, and the pitfalls that cause silent failures.
Learn how Gardener’s Control Plane Migration feature lets you upgrade a Shoot cluster without API downtime, with a concrete manifest example and practical trade‑offs.
Learn how to run multiple instances of a Node.js app with PM2 in cluster mode, verify the setup, and perform seamless reloads without dropping connections.
scalingo
nomad
pm2
nodejs
erlang
gardener
kubernetes