Some of the most common types of REST methods are:
The OPTIONS method represents a request for information about the communication options available on the request/response chain identified by the Request-URI. This method allows the client to determine the options and/or requirements associated with a resource, or the capabilities of a server, without implying a resource action or initiating a resource retrieval.
The REST architecture allows API providers to deliver data in multiple formats such as plain text, HTML, XML, YAML, and JSON
Specifies options for the client you’re using to access REST API resources. For example, you can provide a default namespace prefix so that you don’t need to specify the prefix in your code. The Call Options header can be used with sObject Basic Information, sObject Rows, sObject Rows by External ID, Query, QueryAll, and Search. It is also supported in Bulk API and Bulk API 2.0.
The PATCH method requests that a set of changes described in the request entity be applied to the resource identified by the Request- URI
The GET method requests a representation of the specified resource. Requests using GET should only retrieve data. The HEAD method asks for a response identical to a GET request, but without the response body.
In simple words, the payload means body in the HTTP request and response message. It's optional and depends on the HTTP method name i.e., -In the case of GET HTTP method, the HTTP request message without a body. -In the case of the POST HTTP method, the HTTP request message with body.
Most developers always associate REST with HTTP and that's where the confusion arises. Just to clear Any transfer protocol can be used to create a RESTful API. REST is not necessarily tied to HTTP. RESTful web services are just web services that follow a RESTful architecture.
POST requests are not cacheable by default but can be made cacheable if either an Expires header or a Cache-Control header with a directive, to explicitly allows caching, is added to the response. Responses to PUT and DELETE requests are not cacheable at all.
Safe methods are HTTP methods that do not modify resources. For instance, using GET or HEAD on a resource URL, should NEVER change the resource. However, this is not completely true. Meaning it won't change the resource representation.
Python is the top choice for any first-time programmer. Since its release in 1991, Python has evolved and powered by several frameworks for web application development, scientific and mathematical computing, and graphical user interfaces to the latest REST API frameworks.
Several common HTTP methods are safe: GET , HEAD , or OPTIONS . All safe methods are also idempotent, but not all idempotent methods are safe. For example, PUT and DELETE are both idempotent but unsafe. Even if safe methods have a read-only semantic, servers can alter their state: e.g. they can log or keep statistics.
There are no differences between REST and RESTful as far as APIs are concerned. REST is the set of constraints. RESTful refers to an API adhering to those constraints. It can be used in web services, applications, and software.
In general, an HTTP request is divided into 3 parts:
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