Book Image

Software Architecture with Python

By : Anand Balachandran Pillai
Book Image

Software Architecture with Python

By: Anand Balachandran Pillai

Overview of this book

This book starts by explaining how Python fits into an application's architecture. As you move along, you will get to grips with architecturally significant demands and how to determine them. Later, you’ll gain a complete understanding of the different architectural quality requirements for building a product that satisfies business needs, such as maintainability/reusability, testability, scalability, performance, usability, and security. You will also use various techniques such as incorporating DevOps, continuous integration, and more to make your application robust. You will discover when and when not to use object orientation in your applications, and design scalable applications. The focus is on building the business logic based on the business process documentation, and understanding which frameworks to use and when to use them. The book also covers some important patterns that should be taken into account while solving design problems, as well as those in relatively new domains such as the Cloud. By the end of this book, you will have understood the ins and outs of Python so that you can make critical design decisions that not just live up to but also surpassyour clients’ expectations.
Table of Contents (18 chapters)
Software Architecture with Python
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
Index

What is performance?


The performance of a software system can be broadly defined as:

"The degree to which the system is able to meet its throughput and/or latency requirements in terms of the number of transactions per second or time taken for a single transaction."

We've already taken an overview of measuring performance in the introductory chapter. Performance can be measured either in terms of response time/latency or in terms of throughput. The former is the time it takes for the application to complete a request/response loop on average. The latter is the rate at which the system processes its input in terms of the number of requests or transactions successfully completed per minute.

The performance of a system is a function of its software and of its hardware capabilities. A badly written piece of software could still be made to perform better by scaling the hardware – for example, the amount of RAM.

Similarly a piece of software can be made to work better on existing hardware by increasing...