GET

• Requests data from the server.
• Retrieves information from the server, typically using query parameters in the URL.
• Should not have any side effects on the server (i.e., it should be safe and idempotent).
• Can be cached by browsers and intermediary servers.

POST

• Submits data to be processed to a specified resource.
• Commonly used to send data to the server, such as form submissions or data uploads.
• Can have side effects on the server, like creating or updating resources.
• Should not be used for idempotent operations.

PUT

• Replaces the target resource with the request payload.
• Used to update or create a resource at the specified URL.
• The entire resource is replaced, so missing data in the payload may lead to data loss.
• Often used for updating resources, but it can also create new resources when the URL uniquely identifies the resource.

PATCH

• Partially updates the target resource.
• Used to apply partial modifications to a resource, sending only the changes to be applied.
• Suitable for updating specific fields of a resource without replacing the entire resource.
• More efficient than PUT when updating small portions of large resources.

DELETE

• Deletes the specified resource on the server.
• Used to remove a resource from the server permanently.
• Be cautious when using this method, as data deletion is irreversible.

HEAD

• Requests the headers of a resource without retrieving the actual content.
• Used to check the status and metadata of a resource without transferring the data.
• Useful for validating resource existence and caching purposes.

OPTIONS

• Requests information about the communication options available for a resource.
• Used to check the allowed methods, supported headers, or capabilities of a server.
• Helpful for cross-origin requests and preflight requests.

CONNECT

• Establishes a network connection to the target resource, usually for proxy purposes.
• Rarely used directly by web developers but is critical for HTTP proxies and tunneling.