Serial Number Idm 6.41 May 2026

const pool = new Pool( connectionString: process.env.DATABASE_URL, // e.g., postgres://user:pw@host/db );

/** * POST /serials * Body: prefix?: string * Returns: id, serial */ app.post('/serials', async (req, res) => const prefix = req.body; let serial; let attempts = 0; const maxAttempts = 5; Serial Number Idm 6.41

while (attempts < maxAttempts) serial = buildSerial( prefix ); try const result = await pool.query( `INSERT INTO serial_numbers (serial) VALUES ($1) RETURNING id, serial`, [serial] ); return res.status(201).json(result.rows[0]); catch (err) // 23505 = unique_violation in Postgres if (err.code === '23505') attempts++; continue; // try a new random value console.error(err); return res.status(500).json( error: 'DB error' ); res.status(409).json( error: 'Could not generate unique serial after several tries' ); ); const pool = new Pool( connectionString: process

/** * GET /serials/:id */ app.get('/serials/:id', async (req, res) => const id = req.params; const result = await pool.query('SELECT id, serial, created_at FROM serial_numbers WHERE id = $1', [ id, ]); if (result.rowCount === 0) return res.status(404).json( error: 'Serial not found' ); res.json(result.rows[0]); ); serial */ app.post('/serials'