نظرة ثانية على الطرق: الأمان وعدم تأثر النتيجة بالتكرار

في هذا الدرس

classify HTTP methods and explain why retries depend on it.

الموضوعات المخطط لها

• Safe means the request does not change server state (reading only). GET, HEAD, OPTIONS are safe.
• Idempotent means doing it once or ten times leaves the server in the same state. GET, PUT, DELETE are idempotent.
• POST is neither safe nor idempotent: two identical calls can create two orders.
• PATCH is not guaranteed idempotent; it depends on what the patch says.
• Clients, proxies, and load balancers may retry idempotent calls automatically. A non-idempotent retry can duplicate work.