Book Image

Azure for Developers. - Second Edition

By : Kamil Mrzygłód
5 (1)
Book Image

Azure for Developers. - Second Edition

5 (1)
By: Kamil Mrzygłód

Overview of this book

Microsoft Azure is currently one of the fastest growing public cloud service providers thanks to its sophisticated set of services for building fault-tolerant and scalable cloud-based applications. This second edition of Azure for Developers will take you on a journey through the various PaaS services available in Azure, including Azure App Service, Azure Functions, and Azure SQL Databases, showing you how to build a complete and reliable system with ease. Throughout the book, you’ll discover ways to enhance your skills when building cloud-based solutions leveraging different SQL/NoSQL databases, serverless and messaging components, containerized solutions, and even search engines such as Azure Cognitive Search. That’s not all!! The book also covers more advanced scenarios such as scalability best practices, serving static content with Azure CDN, and distributing loads with Azure Traffic Manager, Azure Application Gateway, and Azure Front Door. By the end of this Azure book, you’ll be able to build modern applications on the Azure cloud using the most popular and promising technologies to make your solutions reliable, stable, and efficient.
Table of Contents (32 chapters)
Part 1: PaaS and Containers
Part 2: Serverless and Reactive Architecture
Part 3: Storage, Messaging, and Monitoring
Part 4: Performance, Scalability, and Maintainability

Event ordering, checkpoints, and replays

In the previous sections, we covered some basic topics of Azure Stream Analytics: how to configure inputs and outputs, querying data, and using the service. In the last part of this chapter, I will show you its more advanced features such as event ordering, checkpoints, and replays, which ensure that events are processed in the exact way you would expect. These topics are, in fact, common subjects in many different messaging solutions, so you will be able to use knowledge from this chapter in other projects as well.

Event ordering

There are two concepts of events when it comes to their ordering, as follows:

  • Application (or event) time
  • Arrival time

There is a clear distinction between them, as noted here:

  • Application time: This is a timestamp when an event was generated on the client (or application) side. It tells you exactly when it occurred.
  • Arrival time: ...