What The Hack - Cosmic Troubleshooting

Introduction

The Cosmic Troubleshooting hack will allow you to upskill in identifying and resolving performance issues in Azure Cosmos DB due to bad design decisions. It follows a real-world scenario (Retail) where the application is facing severe performance issues and needs to be re-architected sightly to take advantage of the full power of Azure Cosmos DB.

We estimate that running this hack end-to-end will take approximately 8 hours, with an Azure cost of about $50 or less.

Learning Objectives

In this hack you will be diving deeper into Azure Cosmos DB data modelling, monitoring and troubleshooting and in general, applying best practices. You will learn about a lot of Azure Cosmos DB features such as:

1. Partitioning
2. Capacity models
3. Indexing
4. Backup
5. Monitoring and Security
6. Synapse Link
7. Change Feed
8. and probably a lot more

We are expecting students to have the following skills within their team:

• Deep knowledge of Azure Cosmos DB features, both from developer perspective as well as database administration
• Experience with .NET C# coding and patterns
• Basic Azure Synapse Analytics knowledge, including basic Spark and SQL Serverless

Challenges

• Challenge 00: Prerequisites - Ready, Set, GO!
  • Prepare your workstation to work with Azure.
• Challenge 01: What is Going On?
  • Troubleshoot the performance issues
• Challenge 02: Time to Fix Things
  • Implement planned changes
• Challenge 03: Automate Order Processing
  • Automate processing of submitted orders
• Challenge 04: Time to Analyze Data
  • Integrate clickstream data and plan for analyzing
• Challenge 05: Going Global
  • Multi-region deployment of the application/database
• Challenge 06: Securing the Data
  • Let’s make sure we prevent bad things from happening.

Prerequisites

• Your own Azure subscription with Owner access
• Visual Studio Code
• Azure CLI

Contributors

• Ioannis Stavrinides
• Vaclav Jirovsky