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typescript.graceful_shutdown

Stability High

Detects servers without graceful shutdown handling.

Why It Matters

Missing graceful shutdown:

Request failures — In-flight requests dropped
Data loss — Uncommitted transactions lost
Connection leaks — Clients left hanging

Example

// ❌ Before (no graceful shutdown)
const server = app.listen(3000);

// ✅ After (with graceful shutdown)
const server = app.listen(3000);

const shutdown = async () => {
  console.log('Shutting down gracefully...');

  server.close(() => {
    console.log('HTTP server closed');
  });

  // Give time for in-flight requests
  await new Promise(resolve => setTimeout(resolve, 5000));

  // Close database connections
  await db.close();

  process.exit(0);
};

process.on('SIGTERM', shutdown);
process.on('SIGINT', shutdown);

What Unfault Detects

Missing SIGTERM/SIGINT handlers
server.close() not called
No connection draining logic

Auto-Fix

Unfault can add graceful shutdown handlers with proper cleanup.