Will killing the process harm my database?

No. Turso is fully managed. Closing your client connection just tells the database, "I'm done." It doesn't corrupt anything. If you had in-flight transactions (which you shouldn't in a dev environment), they'd rollback naturally.

Do I need to add this to every Express app?

Only if you're using a persistent database client. Simple apps with no background connections don't need it. But if you're using any real database—Turso, PostgreSQL, MongoDB, Redis—adding signal handlers is best practice.

Why doesn't nodemon handle this automatically?

Nodemon doesn't know which processes are "yours" to close. It can't introspect your database client. The shutdown logic has to live in your application code, not in the tooling layer.

🛠️ Developer Tools

Why Nodemon Zombies Haunt Your Turso Setup (And How to Kill Them)

Your Turso database client is keeping your old server alive. Nodemon can't restart it. Here's the surgical fix that actually works.

Open Source Beat Apr 03, 2026 4 min read

Terminal showing zombie Node.js process holding port 3000 while nodemon fails to restart

⚡ Key Takeaways

Turso's persistent socket connection prevents Node.js from exiting when nodemon tries to restart—the old process becomes a 'zombie' holding your port 𝕏
Capture SIGUSR2 (nodemon restart signal) with process event handlers that explicitly close the database connection before shutdown 𝕏
Graceful shutdown isn't optional developer niceties—it's essential infrastructure for both local development and production reliability 𝕏

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Open Source Beat

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#graceful shutdown #libsql #node.js #nodemon #signal handling #turso

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Originally reported by Dev.to

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