JSON-RPC
JSON-RPC is a lightweight remote procedure call (RPC) protocol that uses JSON (JavaScript Object Notation) for data encoding. It enables communication between client and server applications over various transports like HTTP, WebSockets, or TCP/IP, allowing functions to be invoked remotely in a structured manner. The protocol is stateless, simple to implement, and widely used in web APIs, blockchain interactions, and distributed systems.
Developers should learn JSON-RPC when building APIs that require efficient, cross-platform remote procedure calls, such as in microservices architectures, blockchain nodes (e.g., Ethereum), or IoT applications. It's particularly useful for scenarios where minimal overhead and human-readable data formats are prioritized over complex features like streaming or built-in authentication, making it a go-to for lightweight, interoperable communication.