Book Image

Go Web Scraping Quick Start Guide

By : Vincent Smith
Book Image

Go Web Scraping Quick Start Guide

By: Vincent Smith

Overview of this book

Web scraping is the process of extracting information from the web using various tools that perform scraping and crawling. Go is emerging as the language of choice for scraping using a variety of libraries. This book will quickly explain to you, how to scrape data data from various websites using Go libraries such as Colly and Goquery. The book starts with an introduction to the use cases of building a web scraper and the main features of the Go programming language, along with setting up a Go environment. It then moves on to HTTP requests and responses and talks about how Go handles them. You will also learn about a number of basic web scraping etiquettes. You will be taught how to navigate through a website, using a breadth-first and then a depth-first search, as well as find and follow links. You will get to know about the ways to track history in order to avoid loops and to protect your web scraper using proxies. Finally the book will cover the Go concurrency model, and how to run scrapers in parallel, along with large-scale distributed web scraping.
Table of Contents (10 chapters)

Introducing Web Scraping and Go

Collecting, parsing, storing, and processing data are essential tasks that almost everybody will need to do in their software development career. Staying on top of emerging technologies that greatly improve the stability, speed, and efficiency of application development is another challenge. To provide insight into how to accomplish both of these goals, I have written this book. Here, you will find a guide for performing web scraping in Go. This book covers a broad perspective on web scraping, from the basics of the Hypertext Transfer Protocol (HTTP) and Hypertext Markup Language (HTML), to building highly concurrent distributed systems.

In this chapter, you will find explanations on the following topics:

  • What is web scraping?
  • Why do you need a web scraper?
  • What is Go?
  • Why is Go a good fit for web scraping?
  • How can you set up a Go development environment?