Debugging ve Error Handling

Ders 21: Debugging ve Error Handling

Öğrenme Hedefleri

• Error types ve handling
• Retry stratejileri
• Logging techniques

İçerik

Error Types

// D1_EXEC_ERROR
// D1_TYPE_ERROR
// D1_COLUMN_NOTFOUND

try {
  await db.exec("INVALID SQL");
} catch (error) {
  console.error("D1 Error:", error.message);
}

Retry Logic

async function retryQuery<T>(
  query: () => Promise<T>,
  maxRetries = 3
): Promise<T> {
  for (let i = 0; i < maxRetries; i++) {
    try {
      return await query();
    } catch (error) {
      if (i === maxRetries - 1) throw error;
      await new Promise(r => setTimeout(r, Math.pow(2, i) * 100));
    }
  }
}

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Özet

✅ Error handling ✅ Retry strategies

Sonraki Ders

Metrics ve Analytics - Monitoring.

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Ders Süresi: 60 dakika Zorluk Seviyesi: İleri