What is rpc api?

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RPC API, which stands for Remote Procedure Call Application Programming Interface, is a communication protocol that allows different software applications to interact with each other over a network. It enables a client application to call a procedure or function on a remote server and receive the result. In this article, we will dive deeper into the concept of RPC API, its working mechanism, and its applications in various domains.

Understanding RPC API

RPC API is based on the principle of remote procedure calls, where a client program invokes a procedure or function on a remote server as if it were a local call. This abstraction allows developers to build distributed systems and applications that can leverage the capabilities of remote servers without worrying about the underlying network communication details.

The RPC API works by defining a set of protocols and data structures that both the client and server applications understand. These protocols specify how the client should format the request, how the server should process it, and how the response should be returned to the client. This standardized communication protocol ensures interoperability between different systems and programming languages.

How RPC API Works

When a client application wants to invoke a remote procedure, it makes a request using the RPC API. The request includes the name of the procedure to be called and any necessary parameters. The client-side RPC library then packages this request into a network message and sends it to the server.

On the server side, the RPC server receives the request and extracts the necessary information, such as the procedure name and parameters. It then executes the requested procedure and generates a response. The response is sent back to the client using the RPC API.

The client-side RPC library receives the response and unpacks it, providing the result to the client application. This transparent process gives the illusion that the procedure call was executed locally, even though it was performed on a remote server.

Benefits and Applications of RPC API

RPC API offers several benefits and finds applications in various domains. Some of the key advantages of using RPC API include:

1. Interoperability: RPC API allows different systems and programming languages to communicate seamlessly, enabling the integration of diverse applications.

2. Modularity: RPC API promotes modular application development by separating concerns and allowing different components to be developed independently.

3. Scalability: RPC API enables the distribution of workload across multiple servers, allowing applications to scale horizontally by adding more servers as needed.

4. Performance: RPC API minimizes the network overhead by efficiently packaging and transmitting data, resulting in faster communication between client and server.

The applications of RPC API span across various domains, including:

1. Distributed Systems: RPC API is widely used in distributed systems, where different components need to communicate and coordinate with each other over a network.

2. Microservices Architecture: RPC API plays a crucial role in microservices architecture, where individual services communicate with each other to fulfill complex business requirements.

3. Web Development: RPC API can be used to build web applications that require real-time communication between the client and server, such as collaborative editing tools or chat applications.


RPC API is a powerful communication protocol that enables different software applications to interact with each other over a network. By abstracting the complexity of remote procedure calls, RPC API allows developers to build distributed systems and applications that can leverage the capabilities of remote servers. With its benefits of interoperability, modularity, scalability, and performance, RPC API finds applications in various domains, including distributed systems, microservices architecture, and web development.


1. rpc.github.io
2. www.ibm.com
3. www.jsonrpc.org