Introduction to Distributed Systems with .NET Core

A hands-on workshop with Dylan Beattie, covering HTTP, REST, GraphQL, gRPC, RabbitMQ, and SignalR: what they do, why you would use them, and how they all work with C# and .NET Core.

Once upon a time, software was simple. You built a website, connected it to a database, and you were done. Then customers started asking for APIs, mobile apps, notification emails, realtime chat… Today, cloud hosting lets us build “elastic” systems – websites that automatically scale up to handle demand; message queues and publish/subscribe patterns to handle spikes in traffic and workload without impacting your end users.

If you’re just starting out with distributed systems design, the possibilities can be overwhelming. APIs, message queueing, REST, GraphQL, gRPC… what should you choose, how does it work, how do you get started?

This workshop gives you a hands-on introduction to the most important messaging patterns used in modern application development. Using C# and .NET, we’ll build a series of small example apps and services, wire them together using these patterns, and discuss how – and when – you’d apply the same patterns in your own applications.

Course Structure and Contents

Introduction

  • What are “distributed systems”?
  • Monoliths and microservices
  • Common integration patterns
  • Principles of distributed architecture

Connecting Components using HTTP

  • HTTP architectural patterns – XMLRPC, REST, GraphQL
  • Designing HTTP APIs
  • HTTP frameworks: WebAPI, NancyFX, ServiceStack
  • Working with HTTP APIs: testing and tooling
  • Scaling HTTP APIs: caching strategies
  • Exercise: building an HTTP API client and server

Message queues and pub/sub

  • Principles of message queues
  • Message queueing in .NET – Redis, MSMQ, EasyNetQ
  • Queueing strategies and error handling
  • Advanced architectural patterns: CQRS, event sourcing
  • Exercise: building a pub/sub system using .NET

Protocol Buffers and gRPC

  • History of RPC on .NET – SOAP, DISCO, WSDL, WCF
  • Introduction to Protocol Buffers
  • Contract-first development
  • Advantages of gRPC
  • Exercise: high-performance architecture using gRPC

Connecting to the Web

  • Integrating browsers with distributed systems
  • The “Backends for Frontends” pattern
  • Working with SignalR
  • Exercise: real-time browser notifications using SignalR

Target Audience and Prerequisites

This workshop is aimed at developers with some experience writing applications using C# and Microsoft .NET.

The workshop is run fully online, using Zoom and various online collaboration tools. Attendees will be writing and running .NET code during the workshop, so will need to join the workshop on a computer running Windows, macOS or Linux, and ideally install the Microsoft .NET SDK from https://dotnet.microsoft.com/download.

Exercises can be done in .NET Framework 4.6+ or .NET Core 2.0+

The ideal class size for this workshop is between 6–20 people. If you’d like to run it for a smaller or a larger group, please get in touch and let’s chat.

About the Trainer

Dylan Beattie created his first web page in 1992. With nearly 25 years’ experience as a professional developer, he’s worked on everything from static websites to distributed microservice architectures. Dylan is a Microsoft MVP and the creator of the Rockstar esoteric programming language, and he’s presented talks about technology and software development at conferences and events all over the world.

Dylan has been speaking at technology events and meetups for over 10 years, and recordings of his presentations have been watched online by over two million people. From 2017 to 2019 he was the Chief Technology Officer at Skills Matter in London, managing the technology platform used to promote and deliver Skills Matter’s portfolio of conferences, community events and meetups. Throughout 2020 Dylan worked with NDC Conferences to help them adapt their international conferences to the online format, working directly with speakers, attendees and partners to solve the technical and logistical problems of online events. Dylan is currently lining up events and workshops for the first half of 2021, and he has a regular stream on Twitch where he streams live coding for various projects he’s working on.

Upcoming Course Dates

10 & 11 April 2021
11:00-15:00 EET

Online  •   Hosted by fwdays Ukraine
Book now!
14 May 2021
10:00-18:00 EET

Online  •   Hosted by Codecamp Romania
Book now!

If you'd like to run this workshop for your team or at your conference, please get in touch

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