Blockchain Basics: Understanding RPC & REST APIs

As a seasoned crypto investor with years of experience in blockchain development, I’ve seen firsthand the importance of making informed decisions when it comes to infrastructure and tooling, including API models. Communication protocols are essential for blockchain nodes to interact effectively and process transactions in unison.


As a crypto investor, I understand that blockchain development involves making numerous crucial decisions regarding the underlying infrastructure and tools used. One such decision that carries significant importance is selecting an appropriate API model for seamless interaction with various blockchain networks.

Blockchain nodes depend on clear communication protocols to function effectively by exchanging information, validating, and processing transactions collectively. Developers usually employ a blend of protocols such as TCP/IP, HTTP WebSocket, and either Remote Procedure Call (RPC) or Representational State Transfer (REST) APIs for this purpose. In simpler terms, these communication methods enable nodes to work in harmony and carry out essential blockchain tasks.

Differences Between RPC & REST

The choice of RPC or REST API is one of the key considerations that blockchain developers must weigh up, prior to getting started on building any decentralized application. RPC enables clients to directly invoke functions or procedures on a remote server, while REST utilizes stateless communication via HTTP methods including DELETE, GET, POST and PUT. Whereas RPC provides a procedural approach to API calls, REST is more resource-oriented. As such, RPC is considered to be more tightly coupled, supporting direct function calls, while REST emphasizes looser coupling and higher scalability. 

Blockchain developers frequently employ RPC APIs due to their convenience. These interfaces allow codes to be executed on distant servers, making communication between blockchain nodes smoother and more efficient. In simpler terms, RPC APIs facilitate better coordination among nodes by allowing them to interact in a more unified manner across the network.

When it comes to engaging with blockchain networks for activities like retrieving data from blocks, initiating transactions, or managing network nodes, Representational State Transfer (RPC) APIs are commonly preferred due to their versatility. Developers can select from an extensive array of RPC libraries and interfaces, enabling seamless interaction with nodes through code, ensuring robust integration with external systems and facilitating automation processes.

Instead of “On the other hand,” you could say “Additionally,” or “Furthermore.”

Developers can leverage REST APIs for interacting with blockchain data in a more uniform and componentized manner. This simplified approach may facilitate the creation of certain types of decentralized applications. Additionally, REST APIs streamline the process of incorporating blockchains into preexisting software.

RPC vs REST: Considerations For Blockchain

When selecting an API for development projects, developers typically consider factors such as performance needs, compatibility requirements, security concerns, and desired user experiences. Generally speaking, RPC APIs are favored due to their ability to directly invoke functions and provide efficient data serialization, leading to better overall performance. Conversely, REST APIs provide a standardized, simpler approach that is often more scalable.

In the realm of blockchain technology, it’s crucial to address performance concerns such as handling a large volume of transactions swiftly, minimizing delays, and efficiently utilizing resources. Every single transaction requires processing and verification in a timely and precise manner. Among various options, Remote Procedure Call (RPC) stands out as an effective solution due to its direct communication model. This model significantly enhances throughput and reduces latency in most scenarios, particularly beneficial for decentralized applications (dApps) that require real-time interaction and frequent method invocations.

Due to the uniform use of HTTP protocols in REST, it provides broader compatibility with various programming languages and computing environments. As a result, it may be more suitable for decentralized applications (dApps) that demand multi-language integration.

Essential to blockchain communication is robust security, given the frequent transfer and processing of confidential information and valuable digital assets. Key elements in this regard include encryption for data privacy, maintaining data integrity, ensuring user authentication, and implementing authorization rules. REST APIs typically employ token-based authentication methods, while RPC APIs often use mechanisms such as API Keys or basic access authentication for user authentication.

Which API Is Best?

In the end, the decision between using an RPC (Remote Procedure Call) or REST (Representational State Transfer) API for a project hinges on its specific needs and any limitations the developer encounters. For applications requiring instantaneous interactions, minimal latency transactions, and close integration with existing infrastructure, RPC is often favored. However, if broader compatibility and interoperability are essential, REST’s more standardized architecture might be a better fit.

When it comes down to it, selecting an API involves making a compromise among factors such as speed, security, interoperability, and ease of use for developers. Consequently, it’s essential for developers to assess the specifications and limitations of their projects before opting for RPC or REST.

Read More

Sorry. No data so far.

2024-06-19 16:14