03 —FieldNotes.
A healthcheck that actually restarts your process
PM2 sees a dead process, not a stuck event loop. A bash and systemd-timer healthcheck that restarts the app, with a cooldown and Telegram alerts.
Next.js SSR leaking memory on a 1-vCPU VPS: how to catch it
How to catch a wedged next-server with strace, tell a leak from caching, and why a per-request object is the usual cause.
How to run Ollama on a VPS: a local LLM with API access
A one-command install, querying a model through the API, how much memory you need, and how to expose it safely - Ollama has no auth.
Run a Telegram bot 24/7 on a VPS
Laptops sleep; free tiers idle your process. Here is how to put a bot on a VPS so it restarts itself after a crash or reboot, with every command explained.
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Deploy a service on a server (and keep it running 24/7)
Run a Telegram or Discord bot, n8n or a script as a systemd service instead of a terminal you will close, and check it survives a reboot.
Diagnosing a slow Linux server: what to check when everything drags
Where to start when the box is slow: CPU vs disk I/O and swap, the OOM killer, exhausted inodes, and what to send support.
Caddy web server setup: automatic HTTPS from the first config
Caddy issues and renews TLS on its own with a few lines of config. Ubuntu install, a Caddyfile for static and proxy, and how ACME works.