Modern REST API Development in Go : Design Performant, Secure, and Observable Web APIs Using Go's Powerful Standard Library.

Format:

Book

Author/Creator:

Espino, Jesús.

Language:

English

Subjects (All):

Application program interfaces (Computer software).

Go (Computer program language).

Representational State Transfer (Software architecture).

Physical Description:

1 online resource (295 pages)

Edition:

1st ed.

Place of Publication:

Birmingham : Packt Publishing, Limited, 2025.

Summary:

"""Modern REST API Development in Go"" is a practical guide that teaches you how to design and implement proficient web APIs using Go. With a real-world project to follow, this book focuses on important aspects such as scalability, security, and observability. By leveraging Go's standard library alongside popular tools, you will acquire a deep understanding of REST API development. What this Book will help me do Design and build RESTful APIs following modern practices and principles. Secure your APIs using authentication and authorization techniques such as JWT. Enable API observability by implementing logging, metrics, and tracing. Write and maintain unit and integration tests for your API endpoints. Generate and integrate OpenAPI documentation for improved usability and transparency. Author(s) Jesús Espino is an experienced backend developer with a profound understanding of Go and REST API design. With years of hands-on experience building web services and a passion for teaching, Jesús brings a practical perspective to solving real-world problems. He writes with clarity, focusing on actionable knowledge to empower developers. Who is it for? This book is ideal for developers aiming to master REST API development in Go. Whether you're a backend engineer seeking to build secure and scalable APIs, or a developer intrigued by Go's programming model, this book provides the insights and practice needed. Newcomers to Go will also benefit from its engaging, project-based approach to learning foundational principles.".

Contents:

Cover

Copyright

Contributors

Table of Contents

Preface

Chapter 1: Introduction to APIs

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Technical requirements

What's an API?

GraphQL

gRPC

SOAP

Custom API

What's REST?

REST concepts

REST and HTTP

Other HTTP features used in REST

Why use Go for API development?

Building a simple API in Go

Creating the project

Writing a "Hello World" program

Running your server

Accessing the API

Creating the client project

Writing the API client

Running the client

Summary

Chapter 2: Exploring REST APIs

OpenAPI

The OpenAPI file

OpenAPI example

OpenAPI documentation example

Postman

Importing an API

Exploring API endpoints

Sending requests using Postman

curl

Getting information

Sending information

Diving deeper into the details

Chapter 3: Building a REST Client

The Go HTTP client

Customizing the client

Customizing the request

Request and Response objects

The request object

The response object

Building your API client

Chapter 4: Designing Your REST API

HTTP methods and status codes

HTTP methods

GET

POST

PUT

PATCH

DELETE

HTTP status codes

2XX

3XX

4XX

5XX

Understanding routing

Middleware

API versioning

Building a CRUD API

Basic structure

The creation endpoint

The list endpoint

The delete endpoint

The update endpoint

The retrieve endpoint

The add-to-list action endpoint

Chapter 5: Authentication and Authorization

Basic authentication

Token-based authentication

Server session token

JWT.

Creating a JWT

Retrieving user information

Authorization using the RBAC approach

Adding authentication to our API

Adding authorization to our API

Chapter 6: Data Persistency

Creating and accessing your database

The repository pattern

The sql package

Querying

Transactions

Using a query builder

Adding persistence to your API

Chapter 7: API Security

Input validation and sanitization

Incorrect data validation threats

Injection attacks

XSS attacks

Data validation

Sanitization

Password handling

HTTP security features

CSP

CORS

Content-Type

HTTPS with Let's Encrypt

Adding CORS to our API

Adding HTTPS to our API

Chapter 8: API Performance

HTTP cache

Cache control

Cache revalidation

ETag

Server cache

Go performance

Profiling

Benchmarks

Adding HTTP headers to your API

Adding an in-memory cache to your API

Chapter 9: Deploying Your API

Technical Requirements

Selecting the correct deployment for you

Bare metal

Virtual server

Containers

Kubernetes

FaaS

Bare-metal/VM deployment

Container deployment

Kubernetes deployment

Chapter 10: Testing

How do you test your API?

Unit tests

Integration tests

E2E testing

Unit testing and mocks

Subtests

Table-driven tests

Mocks

The testify library

Integration testing

The testcontainers library

Adding tests to our shopping list API

Chapter 11: Documenting with OpenAPI

What is OpenAPI?

The OpenAPI format

Documenting your endpoints

Writing code and OpenAPI documents

Generating code from your OpenAPI document.

Generating an OpenAPI document from your code

Publishing your API documentation

Using OpenAPI for documentation

API testing

Client code generation

Adding OpenAPI documentation to your API

Chapter 12: Metrics, Logs, and Traces

Why do we need logs, metrics, and traces?

Logs

Structured logging

OTel logging

Metrics

Visualizing the metrics

Traces

Visualizing traces

Adding observability to our project

Logging

Chapter 13: Using GORM

What is GORM?

When to use GORM

Setting up GORM

Creating models in GORM

CRUD operations with GORM

Creating a user

Reading records

Updating records

Deleting records

Working with relationships

Interesting GORM features

Integrating GORM into our shopping list API

Chapter 14: Using the Echo Framework

What is Echo?

When to use Echo

Setting up Echo

Echo handlers

Echo middleware

Error handling

Migrating our shopping list API to Echo

Migrating handlers

Migrating middleware

Additional features with Echo

Chapter 14: Unlock Your Book's Exclusive Benefits

How to unlock these benefits in three easy steps

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Index.

Notes:

Description based on publisher supplied metadata and other sources.

ISBN:

9781836205364

OCLC:

1530380323

Publisher Number:

CIPO000262623