Snippetbox lets people paste and share snippets of text — a bit like Pastebin or GitHub’s Gists. This is a Golang training to learn how to build production-ready web applications with Go, built while reading Alex Edwards "Let’s Go" book.

A user is able save and view snippets via the app. Here, I learnt how to structure a project, routing requests, working with a database, processing forms and displaying dynamic data safely. I also add user accounts, and restrict the application so that only registered users can create snippets. This will took me through more advanced topics like configuring a HTTPS server, session management, user authentication and middleware.

Touch Points:

• All the fundamentals — How to start a server, create handlers, send responses, route requests and serve static files.
• Structure and organization — How to create an idiomatic and scalable structure for your web application.
• Using Modules — How to use Go's Module functionality to manage and version control your dependencies.
• Managing configuration — How to use command-line flags and dependency injection to manage your application settings.
• Logging and Error Handling — How to implement leveled logging and centralized error handling.
• SQL databases — How to design a database model, set up a connection pool, and execute statements and queries.
• HTML templating — How to cache your templates, display dynamic data, create custom functions and handle runtime errors.
• Middleware — How to create your own middleware to perform common actions (like logging requests and recovering panics).
• RESTful routing — How to create a modern request routing structure that follows the principles of REST. -Form validation — How to implement reusable and user-friendly pattern for validating forms and displaying errors. -Session management — How to use and configure sessions to persist data between requests.
• Using HTTPS — How to correctly setup a HTTPS server and configure it for improved performance and security.
• Prevent common vulnerabilities — How to prevent SQL injection, CSRF, XSS, clickjacking and slow-client attacks.
• Authentication and authorization — How to safely encrypt user passwords and add signup, login and logout functionality.
• Request context — How to use Go's context.Context to pass data between your middleware and handlers.
• Testing — How to create unit tests, integration tests and end-to-end tests, mock dependencies and measure test coverage. And most importantly… How to put it together in a fully-functioning application!

Below a list of used libraries:

• zerolog: fast and structured logging
• lumberjack: log rolling files
• cobra: command like support
• viper: flags and file configuration
• goland-migrate: sql database migration