Remote Procedure Call (RPC) systems let you call a function in another process or on a remote server using the same syntax you would use when calling a routine in a local API or library. This tends to be useful in two situations:
- Your program has a lot of work to do, and you want to spread it across several machines by making calls across the network, but without having to change the code that is making the call, which is now remote.
- You need data or information that is only available on another hard drive or network, and an RPC interface lets you easily send queries to another system to get back an answer.
The first remote procedure ...