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Blockchain Protocols

Tech Comparisons

April 12, 2024

A Deep Analysis: RPC vs REST in Blockchain Infrastructure

Blockchain technology has revolutionized how we think about data distribution and security. Integral to this technology are the communication protocols that facilitate interactions between clients and the blockchain network. Two prominent protocols are Remote Procedure Call (RPC) and Representational State Transfer (REST). This article provides a deep analysis of both, examining their roles, advantages, and disadvantages within blockchain infrastructure.

What are RPC and REST?

RPC is a protocol that allows a program to cause a procedure to execute in another address space, commonly on another computer on a shared network. In the context of blockchain, RPC is used to interact directly with the blockchain nodes, allowing for actions like sending transactions, querying balances, or reading smart contract states.

REST, on the other hand, is a software architectural style that defines a set of constraints to be used for creating Web services. Web services that conform to the REST architectural style, termed RESTful Web services, provide interoperability between computer systems on the Internet. REST uses standard HTTP methods like GET, POST, PUT, and DELETE.

RPC in Blockchain

RPCs are particularly favored in blockchain environments for several reasons:

  • Direct Communication: RPC allows developers to send commands directly to their node in a straightforward manner, which is crucial for blockchain management.
  • Flexibility: It can handle complex queries and operations that are typical in blockchain transactions.
  • Speed: RPC frameworks are designed to be fast and efficient, making them ideal for the performance demands of blockchain operations.

Examples of Blockchain RPC Frameworks

  • Ethereum JSON-RPC: An RPC protocol used by Ethereum nodes that allows interaction with the Ethereum network in a powerful way.
  • Bitcoin Core RPC: It serves as the backbone for communicating with Bitcoin nodes, enabling wallet services and transaction handling.

REST in Blockchain

While not as common as RPC in blockchain contexts, REST is used for specific scenarios:

  • Scalability: REST can handle a large number of requests by its stateless nature, making it suitable for public-facing APIs in blockchain applications.
  • Caching: Responses in REST can be cached for better performance, which is beneficial for read-heavy environments.
  • Simplicity and Interoperability: REST is widely used and understood, and its use in blockchain facilitates easier integration with other web services and systems.

Disadvantages of REST in Blockchain

  • Statelessness: While it aids in scalability, the stateless nature of REST can complicate interactions that require state management, which is common in blockchain applications.
  • Overhead: HTTP methods in REST can introduce significant overhead due to their verbose nature.


Choosing between RPC and REST in blockchain infrastructure largely depends on the specific needs of the application. RPC offers a more direct and efficient route for interacting with blockchain nodes, making it suitable for backend services where performance and flexibility are critical. REST, while not as common in the direct blockchain interaction, shines in situations where ease of use, caching, and integration with other web services are paramount.

Both technologies have their place in the blockchain ecosystem, and understanding their strengths and limitations is key to optimizing blockchain infrastructure for better performance and scalability.


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