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)

Virtual private networks

Depending on your need, you may need to connect to a Virtual Private Network (VPN) in order to ensure that all of your web scraping traffic is hidden. Where proxies provide a layer of protection by masking the IP address of your web scraper, a VPN also masks the data that flows between your scraper and the target site through an encrypted tunnel. This will make the content that you are scraping invisible to ISPs and anyone else with access to your network.

VPNs are not legal in all countries. Please comply with local laws.

There are many companies that offer VPN access, with costs typically ranging from $5 to $15 per month.

Some recommended companies are listed as follows:

  • Vypr VPN
  • Express VPN
  • IPVanish VPN
  • Nord VPN

Configuring your web scraper to use the VPN is different from proxies. VPNs usually require a specific client to connect your machine...