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RPC
Remote Procedure Call (RPC) enables one program to request a service from a program located on another computer in a network. It abstracts the communication process, making it easier to build distributed, client-server applications because the calling method appears as if it's local despite being remote..
Remote Procedure Call (RPC) is a powerful protocol that allows a program to execute procedures on a remote server as if they were local calls. It abstracts the intricacies of network communication and serialization, simplifying the development of networked applications. RPC frameworks handle data marshaling, transmission, and response retrieval transparently to the developer.
RPC operates over multiple transport protocols, most notably TCP and UDP, balancing reliable delivery with latency considerations. It traditionally uses port 530, though newer implementations may use dynamic ports or other mechanisms. RPC supports various data encodings and can be implemented in diverse environments, including UNIX and Windows systems.
Because it’s so versatile, RPC forms the backbone of many distributed architectures. Technologies such as DCOM, ONC RPC, and the Windows RPC system rely on these concepts. Newer frameworks like gRPC build upon this philosophy, enhancing cross-platform communication while often leveraging encryption and modern serialization methods.