Book Image

The Go Workshop

By : Delio D'Anna, Andrew Hayes, Sam Hennessy, Jeremy Leasor, Gobin Sougrakpam, Dániel Szabó
Book Image

The Go Workshop

By: Delio D'Anna, Andrew Hayes, Sam Hennessy, Jeremy Leasor, Gobin Sougrakpam, Dániel Szabó

Overview of this book

The Go Workshop will take the pain out of learning the Go programming language (also known as Golang). It is designed to teach you to be productive in building real-world software. Presented in an engaging, hands-on way, this book focuses on the features of Go that are used by professionals in their everyday work. Each concept is broken down, clearly explained, and followed up with activities to test your knowledge and build your practical skills. Your first steps will involve mastering Go syntax, working with variables and operators, and using core and complex types to hold data. Moving ahead, you will build your understanding of programming logic and implement Go algorithms to construct useful functions. As you progress, you'll discover how to handle errors, debug code to troubleshoot your applications, and implement polymorphism using interfaces. The later chapters will then teach you how to manage files, connect to a database, work with HTTP servers and REST APIs, and make use of concurrent programming. Throughout this Workshop, you'll work on a series of mini projects, including a shopping cart, a loan calculator, a working hours tracker, a web page counter, a code checker, and a user authentication system. By the end of this book, you'll have the knowledge and confidence to tackle your own ambitious projects with Go.
Table of Contents (21 chapters)
Free Chapter
1. Variables and Operators
2. Logic and Loops

Application Security

During the development of your application, you will not be able to anticipate all the possible ways in which it could be compromised. However, you can always try to safeguard the application by following safe coding practices, such as the encryption of data in transit and at rest. It is a well-known fact that if we protect an application from well-known attack vectors such as SQL injection, we will be able to ward off most attacks. We will cover topics such as the use of digital certificates and hashing sensitive data to protect it from attackers.

One of the major attack vectors of a software application is the command or SQL injection, in which malicious user input can change the behavior of a command or query. This can happen with poorly constructed queries in SQL, HTTP URLs, or in OS commands.

Let's look at SQL injection and command injection in detail.

SQL Injection

If you are working on an application that needs to store data, you will most...