Book Image

Serverless Integration Design Patterns with Azure

By : Abhishek Kumar, Srinivasa Mahendrakar
Book Image

Serverless Integration Design Patterns with Azure

By: Abhishek Kumar, Srinivasa Mahendrakar

Overview of this book

With more enterprises adapting cloud-based and API-based solutions, application integration has become more relevant and significant than ever before. Parallelly, Serverless Integration has gained popularity, as it helps agile organizations to build integration solutions quickly without having to worry about infrastructure costs. With Microsoft Azure’s serverless offerings, such as Logic Apps, Azure Functions, API Management, Azure Event Grid and Service Bus, organizations can build powerful, secure, and scalable integration solutions with ease. The primary objective of this book is to help you to understand various serverless offerings included within Azure Integration Services, taking you through the basics and industry practices and patterns. This book starts by explaining the concepts of services such as Azure Functions, Logic Apps, and Service Bus with hands-on examples and use cases. After getting to grips with the basics, you will be introduced to API Management and building B2B solutions using Logic Apps Enterprise Integration Pack. This book will help readers to understand building hybrid integration solutions and touches upon Microsoft Cognitive Services and leveraging them in modern integration solutions. Industry practices and patterns are brought to light at appropriate opportunities while explaining various concepts.
Table of Contents (15 chapters)

An overview of triggers

The Logic Apps workflow is an event-driven integration platform and works with a combination of triggers and actions. In Azure Logic Apps, each workflow run starts with a trigger, which can be either external or scheduled. Every trigger is followed by one or more sets of actions, which are executed as part of the workflow.

It is always advisable to have a single trigger for each workflow instead of having multiple entry points for your logic apps. If you do require multiple triggers in Logic Apps for a single workflow, you need to update the code view of Logic Apps as shown:

Triggers in Logic Apps can be classified as polling triggers or push triggers. In the case of polling triggers, Logic Apps polls specified endpoints at scheduled intervals to look for any new messages or start the Logic Apps workflow instance at specified intervals. An example of this...