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Changing a shared PL/SQL package usually means an outage. Edition-Based Redefinition pins each session to an edition so old and new code run side by side.
PM2 cluster mode uses all your CPU cores and `pm2 reload` deploys without dropping requests — but only if your app honors the shutdown contract. Here's the config, the code, and how to verify it.
I'm planning a zero-downtime migration of a small Socket.IO application to a multi-node setup behind a load balancer. During rolling restarts, clients using the default transports can hit the Engine.IO error Session ID unknown (HTTP 400), because the handshake session lives in memory on the node that issued it and a subsequent polling request may land on a d
pm2