Multiple Connected Microservices you own this product

prerequisites
basic Docker • basic HTTP networking
skills learned
Docker + Wasm • Docker Compose • WasmEdge CLI tools

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Look inside

UMET Inc. is off to a great start in its efforts to refactor its backend to a modern technology stack using the popular, high-performance Rust programming language. As a new developer for the e-commerce platform, your task is to create a microservice for calculating order totals that depends on another microservice that looks up sales tax rates. Using HTML and JavaScript, you’ll create a web user interface for the microservices so that UMET product managers can test them in a browser. You’ll build and test your new application using Rust reqwest and Serde crates to make web service calls and also use Docker Compose to manage multiple Wasm and Linux containers in a single application. When you’re finished, you’ll have firsthand experience using WasmEdge command-line interface (CLI) tools to build a cloud-native application with interdependent microservices.

This project is designed for learning purposes and is not a complete, production-ready application or solution.

project author

Michael Yuan

Dr. Michael Yuan is the founder and maintainer of the open -source WasmEdge project — one of the most popular WebAssembly (Wasm) runtimes for server and edge applications. He is also the creator of LlamaEdge, a cross-platform, embeddable, and cloud-native runtime for AI applications, supporting LLMs and popular vision and speech models. Dr. Yuan is the author of 5 books on software engineering and a frequent speaker at conferences such as KubeCon, Open Source Summit, QCon, Rust Conf, VMWare Explore, COSCon, and Wasm I/O. He has designed and implemented enterprise applications and server-side software infrastructure since the early 2000s. Dr. Yuan holds a PhD in Astrophysics from the University of Texas at Austin.

prerequisites

This liveProject is for developers who are interested in learning how to use WasmEdge CLI tools to create cloud-native applications with interconnected microservices. To begin these liveProjects you’ll need to be familiar with the following:

TOOLS
  • Basics of programming with a compiled language such as C, C++, Go, Swift, or Kotlin
  • Basics of the workflow of building with compilers
  • Linux basics
  • Basics of Git, GitHub, and GitHub Actions
  • GitHub account (registration is free)
  • Rust and Cargo toolchain
  • WasmEdge Runtime
  • Docker Desktop
TECHNIQUES
  • Basics of typical HTTP-based web services
  • Basics of the 3-tier architecture for web applications
  • Exchange data with a web service using JSON
  • Use JSON in the frontend JavaScript framework

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