Junior — Middle
What is the difference between HTTP POST and PUT methods in web development?
sobes.tech AI
Answer from AI
HTTP POST and PUT methods differ in purpose and behavior:
-
POST is used to create a new resource on the server. Each call to POST usually creates a new object. This method is not idempotent — repeated requests can create duplicates.
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PUT is used to create or replace a resource at a specific URL. If the resource exists, it is updated; if not, it is created. PUT is idempotent, meaning repeated requests with the same data will not change the result after the first.
Example:
- POST /users — creates a new user with a unique ID.
- PUT /users/123 — updates or creates a user with ID 123.
Thus, POST is for adding, PUT is for updating or replacing a specific resource.