What You’ll Learn in Lets Go Further! Advanced patterns for building APIs and web applications in Go
- Structure and organization — How to implement an idiomatic and flexible code structure for your RESTful API projects.
- JSON responses — How to send JSON responses from your API, how to format and customize them, and what common gotchas you need to be aware of.
- JSON requests — How to parse incoming JSON requests, manage bad requests, and restrict and validate their content.
- SQL migrations — How to use SQL migrations to manage changes to your database schema.
- Database operations — How to set timeouts on your database queries and optimize the behavior of Go’s sql.DB connection pool.
- Beyond CRUD — How to perform advanced actions on your API resources, including fetching related data and partial updates (with optimistic concurrency control).
- Filtering, sorting and pagination — How to support filtering, sorting and pagination of data in your API endpoints.
- Full-text search — How to use PostgreSQL’s full-text search functionality to perform natural-language searches of your data.
- Structured logging — How to develop a custom logger which writes structured, leveled, log entries in JSON format.
- Rate-limiting — How to limit requests to your API on a per-client basis.
- Managing background tasks — How to safely execute tasks in background goroutines.
- Graceful shutdown — How to set up your API to support graceful shutdowns, including waiting for background tasks to complete.
- Sending emails — How to send emails from your API and manage email content using Go’s new embedded files functionality.
- User activation and password resets — How to build secure workflows for registering users, verifying their email address, and managing password resets.
- Authentication — How to authenticate users with both stateful bearers tokens and stateless JWTs (JSON web tokens).
- Permission-based authorization — How to implement granular permission-based authorization checks on your API endpoints.
- Managing CORS requests — How to control cross-origin requests to your API from front-end JavaScript applications.
- Metrics — How to expose application metrics, including memory use, sql.DB connection pool statistics, response status counts and more.
- Building and auditing — How to combine Go’s tooling and Makefiles to easily audit your code, build binaries and vendor dependencies.
- Versioning — How to leverage Git to apply automatic application versioning when building binaries.
- Deployment — How to set up a Linux server on Digital Ocean, automate deployments, and run your API as a background service in production using systemd.
