Sanomalähtöiset

Sanomalähtöiset refers to a Finnish term that translates to "message-driven" or "event-driven" in English. This concept describes a programming or architectural paradigm where the flow of execution is determined by the occurrence of messages or events. Instead of a traditional, linear program flow, components in a sanomalähtöiset system communicate with each other by sending and receiving messages.

In a sanomalähtöiset system, individual components or services are designed to react to specific messages or events. When a message is generated, it is typically sent to a central message queue or broker. Other components that are interested in that particular type of message can then subscribe to it and process it when it arrives. This decoupling of components allows for greater flexibility and scalability. For example, a change in one part of the system does not necessarily require modifications in other parts, as long as the message interface remains consistent.

This approach is commonly employed in distributed systems, microservices architectures, and asynchronous processing. It enables systems to handle varying loads efficiently, as messages can be queued and processed at a rate that the system can manage. Sanomalähtöiset systems are also well-suited for scenarios requiring high availability and fault tolerance, as the failure of one component does not necessarily bring down the entire system. The message-driven nature promotes loose coupling, making systems easier to maintain and evolve over time.