Difference between PUT and POST operations?

Is there any difference between PUT and POST operations?

PUT and POST operation are quite similar, except the terms of the result generated by them.

PUT operation is idempotent, so you can cache the response while the responses to POST operation are not cacheable, and if you retry the request N times, you will end up having N resources with N different URIs created on server.

In a Web API Testing interview, you should give a specific example for PUT and POST operations to make crystal clear to the interviewer. Below is an example:

Scenario: Let’s say we are designing a network application. Let’s list down few URIs and their purpose to get to know when to use POST and when to use PUT operations.

GET /device-management/devices : Get all devices
POST /device-management/devices : Create a new device

GET /device-management/devices/{id} : Get the device information identified by “id”
PUT /device-management/devices/{id} : Update the device information identified by “id”
DELETE /device-management/devices/{id} : Delete device by “id”

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