Book Image

Software Architecture with C++

By : Adrian Ostrowski, Piotr Gaczkowski
Book Image

Software Architecture with C++

By: Adrian Ostrowski, Piotr Gaczkowski

Overview of this book

Software architecture refers to the high-level design of complex applications. It is evolving just like the languages we use, but there are architectural concepts and patterns that you can learn to write high-performance apps in a high-level language without sacrificing readability and maintainability. If you're working with modern C++, this practical guide will help you put your knowledge to work and design distributed, large-scale apps. You'll start by getting up to speed with architectural concepts, including established patterns and rising trends, then move on to understanding what software architecture actually is and start exploring its components. Next, you'll discover the design concepts involved in application architecture and the patterns in software development, before going on to learn how to build, package, integrate, and deploy your components. In the concluding chapters, you'll explore different architectural qualities, such as maintainability, reusability, testability, performance, scalability, and security. Finally, you will get an overview of distributed systems, such as service-oriented architecture, microservices, and cloud-native, and understand how to apply them in application development. By the end of this book, you'll be able to build distributed services using modern C++ and associated tools to deliver solutions as per your clients' requirements.
Table of Contents (24 chapters)
1
Section 1: Concepts and Components of Software Architecture
5
Section 2: The Design and Development of C++ Software
6
Architectural and System Design
10
Section 3: Architectural Quality Attributes
15
Section 4: Cloud-Native Design Principles
21
About Packt

Writing declarative code

Are you familiar with imperative versus declarative coding styles? The former is when your code tells the machine how to achieve what you want step by step. The latter is when you tell the machine just what you want to achieve. Certain programming languages favor one over the other. For instance, C is imperative, while SQL is declarative, just like many functional languages. Some languages allow you to mix the styles – think of LINQ in C#.

C++ is a flexible beast that allows you to write code in both ways. Is there one you should prefer? It turns out that when you're writing declarative code, usually a higher level of abstraction is kept, which leads to fewer bugs and easier-to-spot errors. So, how can we write C++ declaratively? There are two main tactics to apply.

The first one is to write functional-style C++, which is where you prefer a pure-functional style (no side effects of functions) if possible. Instead of writing loops by hand, you...