RPC Explained: What is Remote Procedure Call and How Does it Work?

RPC stands for 'Remote Procedure Call'. It's a communication protocol designed to facilitate communication between different processes running on different systems within a network. The core idea behind RPC is to enable a program to call a function or procedure in another program, located on a remote system, as if it were a local function call.

RPC empowers the development of distributed applications, where different parts of the application operate on distinct systems connected through a network. RPC simplifies the development of such applications by abstracting away the intricate network details, allowing developers to concentrate on the application's functionality.

In an RPC system, the client program initiates a request to the server program. The server program then executes the requested function and returns the results to the client. The client and server programs can be written in different programming languages and may run on different operating systems. The RPC protocol manages the complexities of data serialization and deserialization, as well as the transmission of data over the network.

RPC finds widespread use in a variety of applications, including client-server systems, distributed databases, and web services. It serves as a powerful tool for building distributed systems but can also introduce complexity and performance overhead. Consequently, it's essential to carefully consider the use of RPC in distributed systems and employ it only when necessary.