!!install!! | Production-settings
Beyond the Notebook: Mastering Production-Settings for Scalable, Secure Systems
- [ ] Unit tests cover production lock behavior (100%).
- [ ] Integration test verifies that changing a prod setting requires a PR + approvals.
- [ ] Read-only UI deployed for production namespace.
- [ ] Audit log shows every production setting mutation.
- [ ] Documentation updated: "How to change a production setting".
4. API Endpoints (Examples)
Machine run time vs. downtime and Overall Equipment Effectiveness (OEE). Resource Utilization:
- All production settings are displayed with a red "PRODUCTION" badge and a lock icon.
- Edit buttons are disabled; instead a "Propose Change" button opens the change request form.
- A "Last Applied Commit" field shows which version of config is live.
- Do not store secrets in repo. Use secret managers or environment variables injected at deploy time.
- Immutable configuration in runtime. Treat production settings as immutable; change via deploys or controlled feature flags.
- Keep production minimal and explicit. Avoid inheriting unexpected defaults; explicitly declare critical behaviors.
- Use typed/validated config. Validate at startup (schema validation) to fail fast on bad settings.
- Environment parity with safeguards. Keep dev/staging parity but enable stricter checks in prod (e.g., stricter CORS, monitoring).
- Centralize sensitive endpoints. Use service discovery or central config service rather than hard-coded hostnames.
- Use structured logs and monitoring. JSON logs, correlation IDs, traces for debugging in prod.
- Enable safe feature flags. Roll out gradually; include kill-switches.
- Document each setting’s purpose, allowable ranges, and risk.
- Review and rotate credentials regularly. Automate rotation where possible.
- Limit exposed debug info. Disable verbose error pages and stack traces.
- Test config changes in staging with production-like load before deploying to prod.
- Fallbacks & defaults. Provide sane, safe defaults but require explicit opt-in for high-risk behavior.