Book Image

Software Architect's Handbook

By : Joseph Ingeno
Book Image

Software Architect's Handbook

By: Joseph Ingeno

Overview of this book

The Software Architect’s Handbook is a comprehensive guide to help developers, architects, and senior programmers advance their career in the software architecture domain. This book takes you through all the important concepts, right from design principles to different considerations at various stages of your career in software architecture. The book begins by covering the fundamentals, benefits, and purpose of software architecture. You will discover how software architecture relates to an organization, followed by identifying its significant quality attributes. Once you have covered the basics, you will explore design patterns, best practices, and paradigms for efficient software development. The book discusses which factors you need to consider for performance and security enhancements. You will learn to write documentation for your architectures and make appropriate decisions when considering DevOps. In addition to this, you will explore how to design legacy applications before understanding how to create software architectures that evolve as the market, business requirements, frameworks, tools, and best practices change over time. By the end of this book, you will not only have studied software architecture concepts but also built the soft skills necessary to grow in this field.
Table of Contents (19 chapters)

Availability

Availability describes the degree to which the software system will work as required when it is needed. It is the probability that the software system is operating properly when needed by a user and is not experiencing unplanned downtime due to failure and repair.

It is typically measured in terms of nines, as in how many nines represent the availability level (99.9%, 99.99%, or 99.999%).

Calculating availability based on time

Availability can be calculated with the following formula:

MTBF is the mean time between failures, which is the average time between two failures of the system. MTTR is the mean time to repair, which is the average time to troubleshoot and repair the system back to its operational state...