In today’s cloud-native landscape, understanding how systems communicate—and how they’re built—is essential for engineers. This post synthesizes key concepts around gRPC vs. REST , Linux process communication , and the role of Rust in the modern Linux kernel , clarifying common misconceptions and highlighting real-world architectures.

gRPC vs. REST: Choosing the Right Protocol

At the heart of microservices lies a fundamental design decision: how should services talk to each other?

Core Differences

REST (Representational State Transfer) is resource-oriented, using HTTP verbs ( GET , POST , PUT ) over JSON or XML. It’s human-readable, widely supported, and ideal for public APIs and browser clients.

gRPC , by contrast, is action-oriented.…