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I have been researching a technical topic that is fundamental to understanding how many modern applications work: what is RPC and why is it so important in the blockchain ecosystem.
RPC, or Remote Procedure Call, is basically a protocol that allows one program to request a service from another application regardless of where it is located. It sounds technical, but it is the backbone of almost everything we use today, from cloud services to the decentralized applications we use in crypto.
The interesting thing is that this is not something new. Bruce Jay Nelson formalized the concept back in 1981, but it has evolved in fascinating ways. We moved from DCOM and Sun RPC to Google’s gRPC, which revolutionized service communication with HTTP/2. And then JSON-RPC arrived, becoming the standard for blockchain nodes to communicate with each other.
In the world of traditional finance, RPC is critical for synchronized transaction systems. In telecommunications, it enables managing complex networks from remote locations. But where we really see the impact is in blockchain. When you interact with a DApp, execute a smart contract, or query real-time data, RPC is working behind the scenes to facilitate all that communication.
Trading platforms like those in the market use RPC to connect directly with the blockchain, enabling real-time data queries and smart contract execution. It’s what makes everything work seamlessly.
What catches my attention is how the adoption of RPC has accelerated innovation in microservices and distributed computing. It has enabled the creation of scalable systems that can handle the demands of modern applications. And specifically in blockchain, we see how JSON-RPC has become the bridge between your wallet and the network, between your business decisions and execution on the chain.
If you understand what RPC is and how it works, you better understand how the entire crypto infrastructure is connected. It’s one of those technical concepts that seems complicated at first, but once you understand it, you see that it’s everywhere.