REST (Representational State Transfer) is based on HTTP. I will write some basic information about the REST API. It is not a structured REST explanation, I will write down some notes about it.
If a request is cached, the response can be sent from one of the intermediaries (Proxy or Gateway) without reaching to server.
REST Methods
- GET: Retrieve information about the REST API resource
- POST: Create a REST API resource
- PUT: Update a REST API resource wholly
- DELETE: Delete a REST API resource or related component
- PATCH: Update a REST API resource partially or wholly
- HEAD: Identical to GET requests but only returns HTTP headers
- OPTIONS: Describes the communication options for the target resource
- CONNECT: Establishes a tunnel to the server identified by the target resource
- TARGET: Performs a message loop-back test along the path to the target resource
And here are some helpful information about various REST methods:
- GET requests can be cached POST requests never cached
- GET requests to remain in browser history POST request does NOT
- GET request can be bookmarked POST requests can NOT
- GET requests to have length restrictions POST request have NOT
- PUT requests insert or update a record depending upon whether the given record exists
- PATCH requests set or update selected properties only and NOT the whole data.
- Idempotent requests: Making multiple identical requests has the same effect as making a single request.
- POST, CONNECT and PATCH methods are NOT idempotent.
- GET, HEAD, OPTIONS, PUT, DELETE and TRACE methods are idempotent.
For more information, I suggest you visit the related page in W3C and the related Mozilla Developer Network page.
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