RPCtyyppejä

RPCtyyppejä refers to different types of Remote Procedure Calls (RPC). RPC is a communication protocol that allows a program running on one computer to execute a procedure (subroutine or function) on another computer without the programmer explicitly coding the details of the remote interaction. Essentially, it makes a remote function call appear as if it were a local one.

The "tyyppejä" part is Finnish for "types". Therefore, RPCtyyppejä translates to "RPC types". These types can vary based on several factors, including the underlying transport mechanism, the data serialization format, and the specific implementation of the RPC framework.

Common RPC types include synchronous and asynchronous RPC. In synchronous RPC, the client program waits for the remote procedure to complete and return a result before continuing its own execution. In asynchronous RPC, the client does not wait; it can continue with other tasks while the remote procedure is being executed, and the result is handled later, often through callbacks or promises.

Another way to categorize RPC types is by their reliability. Some RPC mechanisms guarantee delivery, while others offer at-most-once or at-least-once execution semantics, meaning a procedure might be executed zero or one time, or one or more times, respectively. The choice of RPC type depends heavily on the application's requirements for performance, latency, and fault tolerance. Examples of RPC frameworks that embody these different types include gRPC, Apache Thrift, and JSON-RPC.