Rust microservices in server-side WebAssembly

Rust, a programming language celebrated for its memory safety and speed, is increasingly used for infrastructure software, including server-side applications. However, its native machine code compilation can create challenges in cloud environments by introducing overhead and limiting portability. To address these issues, Rust programs can be compiled into WebAssembly (Wasm) bytecode, allowing deployment in WasmEdge Runtime, which offers better isolation, reduced attack surfaces, and improved efficiency, especially in resource-constrained environments. Wasm apps, which can be smaller and faster than native Rust applications, are well-suited for edge computing and offer cross-platform portability. The text illustrates how to build Rust microservices using WasmEdge, covering aspects like creating web services, database interaction, and cloud deployment using tools like Kubernetes and Dapr. It further explores the broader applications of WasmEdge, such as in serverless platforms, ETL functions, and blockchain smart contracts, highlighting its versatility and potential for modern application development.