What is RPC？ Please describe in detail

RPC stands for Remote Procedure Call. It is a communication protocol used to enable communication between different processes running on different systems in a network. The basic idea behind RPC is to allow a program to call a function or procedure in another program, running on a remote system, as if it were a local function call.

RPC allows for the development of distributed applications, where different parts of the application are running on different systems connected through a network. RPC helps to simplify the development of such applications by abstracting away the network details and allowing developers to focus on the functionality of the application.

In an RPC system, the client program makes a request to the server program, which executes the requested function and returns the results to the client. The client and server programs may be written in different programming languages and may be running on different operating systems. The RPC protocol handles the details of data serialization and deserialization, as well as the transmission of data over the network.

RPC is used in a wide range of applications, including client-server systems, distributed databases, and web services. It is a powerful tool for building distributed systems, but it can also introduce complexity and performance overhead. As such, it is important to carefully consider the use of RPC in distributed systems and to use it only where it is necessary.