You're reading from Designing API-First Enterprise Architectures on Azure A guide for architects and developers to expedite digital transformation with API-led architectures

Product type Paperback

Published in Aug 2021

Publisher Packt

ISBN-13 9781801813914

Length 290 pages

Edition 1st Edition

Tools

.NET Core

Concepts

Software Architecture

Author (1):

Subhajit Chatterjee

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Table of Contents (14) Chapters

Preface

1. Section 1: API-Led Architecture in the Digital Economy

2. Chapter 1: Evolution of Enterprise Solution Architectures FREE CHAPTER

3. Chapter 2: APIs as Digital Connectors

4. Section 2: Build Reliable API-Centric Solutions

5. Chapter 3: Architecture Principles and API Styles

6. Chapter 4: Assuring the Quality of the API Service (or Product)

7. Chapter 5: RESTful APIs – the New Web

8. Chapter 6: API Design Practices

9. Chapter 7: Accelerating through DevOps Essentials

10. Section 3: Deliver Business Value for a Modern Enterprise

11. Chapter 8: API-Centric Enterprise Integrations

12. Chapter 9: APIs as a Monetized Product

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High-availability patterns

High Availability (HA) is the ability of an application to continue running in a healthy state without significant downtime, absorbing temporary failures in dependent services and hardware. Most application strategies for high availability involve either redundancy or the removal of hard dependencies between application components. It is defined using the nines approach (for example, two nines = 99%, three nines = 99.9%, four nines = 99.99%, and so on).

For API platforms, the following strategies are typically adopted to offer high availability:

Load balancing across instances: APIs will be designed to scale out by adding more instances. Load balancing strategies will improve resiliency by removing unhealthy instances out of rotation or service.
Geo-redundancy: API platforms will be designed in a way that the Azure resources will be deployed in two geographically distributed locations so that an outage in one of the regions will not impact...