Can you explain what happens when using the HTTP POST method?

The HTTP POST method is used to send data to the server, typically for creating new resources or performing actions that change the server's state. Unlike GET, which requests data, POST transmits data in the request body.

When using POST, the following occurs:

• The client constructs a request with the POST method and places data (such as a form or JSON) in the request body.
• The server receives the request, processes the data (for example, saves it to a database, initiates a process).
• The server returns a response with the result of the operation (for example, status 201 Created, or data of the created object).

Example using curl:

curl -X POST https://example.com/api/users -d '{"name":"Ivan","age":30}' -H "Content-Type: application/json"

Here, we send JSON data of a new user to the server.