Real-Time Config Without a Restart: From Environment Variables to a Database-Backed ConfigManager
Environment variables are read once, at boot — changing a setting means a redeploy and a process restart. For any long-running service that can't afford a bounce, that's a problem. Here's how to move from env-var config to a database-backed ConfigManager backed by PostgreSQL and Redis, so settings update live and the process picks them up without stopping — including the parts that bite: consistency, validation, failure modes, and what should never live in a config table.
Shipping UI to a Live Trading Client Without a Redeploy: A Module Federation Case Study
Self-hosted trading clients create a deployment problem: how do you ship interface changes without making every user redeploy and interrupting live automation? Module Federation 2.0 with a Vue micro-frontend is the answer — the shell stays put while remotes update from the CDN. Here's how it works, and the shell-to-remote contract problems that make it hard.