6.http methods in rest api |get | post | put | delete

HTTP methods are a set of request methods used by the HTTP protocol to perform different actions on resources hosted on a web server. Here’s a simple explanation of the most commonly used HTTP methods:
1. GET
Purpose: Retrieve data from a server.
Example: When you enter a URL in your web browser, it sends a GET request to fetch the webpage.
Characteristics:
Safe: It doesn't modify any data on the server.
Idempotent: Multiple identical GET requests have the same effect as a single request.
2. POST
Purpose: Send data to the server to create or update a resource.
Example: When you fill out a form on a website and submit it, your browser sends a POST request.
Characteristics:
Not idempotent: Submitting the same data multiple times can result in multiple resources being created or changes being applied multiple times.
3. PUT
Purpose: Update a resource or create a resource if it doesn’t exist.
Example: Updating a user profile on a website.
Characteristics:
Idempotent: Multiple identical PUT requests have the same effect as a single request.
4. DELETE
Purpose: Remove a resource from the server.
Example: Deleting a post on a social media platform.
Characteristics:
Idempotent: Multiple identical DELETE requests have the same effect as a single request.
5. PATCH
Purpose: Apply partial modifications to a resource.
Example: Updating a single field in a user profile without sending the entire profile data.
Characteristics:
Not necessarily idempotent: Applying the same PATCH request multiple times may have different effects.
6. HEAD
Purpose: Retrieve the headers of a resource without fetching the body.
Example: Checking the metadata of a webpage, like its last modified date, without downloading the entire page.
Characteristics:
Safe and idempotent.
7. OPTIONS
Purpose: Describe the communication options for the target resource.
Example: Used by browsers to check which HTTP methods are supported by a server for a particular URL.
Characteristics:
Safe and idempotent.
8. CONNECT
Purpose: Establish a tunnel to the server, often used for SSL (HTTPS) connections through a proxy.
Example: Enabling SSL encryption between the client and the server.
Characteristics:
Not commonly used in everyday web browsing.
9. TRACE
Purpose: Perform a message loop-back test along the path to the target resource.
Example: Debugging to see what is being received at the server.
Characteristics:
Not commonly used due to security concerns.
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