pyynnöt

Pyynnöt (Finnish for requests) is a term used to describe the act of asking for information or a service from a resource, particularly in computer networks and web services. In this context, pyynnöt refer to the messages sent by a client to a server to initiate an action or obtain data.

In networking and web development, pyynnöt are most commonly HTTP requests. A client, such as a web browser or an application, sends a request to a server using an HTTP method and a target URL. The server processes the request and returns a response, which includes a status code, headers, and an optional body.

Typical HTTP methods include GET, POST, PUT, PATCH, DELETE, HEAD and OPTIONS. GET retrieves data, POST submits data to be processed, PUT and PATCH modify resources, DELETE removes resources. Requests may include headers with metadata (such as content type, authentication), query parameters, or a message body with data.

Key concepts associated with pyynnöt include idempotence, statelessness, caching, and content negotiation. Proper handling involves error checking via status codes (for example 200 OK, 201 Created, 400 Bad Request, 401 Unauthorized, 404 Not Found, 429 Too Many Requests, 500 Server Error), as well as secure transport using TLS/HTTPS and appropriate authentication and authorization.

Outside HTTP, pyynnöt can also refer to generic inter-process or inter-service requests in distributed systems, such as API calls, message queues, or remote procedure calls. The term is widely used in Finnish technical literature and documentation to describe the act of requesting resources or actions from a system.