Amazon scraping - ecommerce - Web scraping

Challenges That Make Amazon Data Scraping So Painful

Challenges That Make Amazon Data Scraping So Painful

The e-commerce industry is a rapidly growing and evolving sector. The face of this industry has changed almost every year since it was first incepted in the early 1990s. With the growing number of digital buyers, the digital retail industry has shown a growth rate of above 20% in the last 3 years.

This growing industry demands sophisticated analytical techniques to predict market trends, study customer temperament or even get a competitive edge over the myriad of players in this sector. To augment the strength of these analytical techniques, you need high-quality reliable dataThis data is called alternative data and can be derived from multiple sources. Some of the most prominent sources of alternative data in the e-commerce industry are customer reviews, product information, and even geographical data. E-commerce websites are a great source for a lot of these data elements. It is no news that Amazon has been at the forefront of the e-commerce industry, for quite some time now.  

Amazon has been on the cutting edge of collecting, storing and analyzing a large amount of data- be it customer data, product information, data about retailers or even information on the general market trends. Since Amazon is one of the largest e-commerce websites, a lot of analysts and firms depend on the data extracted from here to derive actionable insights.

However, Amazon data scraping is not easy! Let us go through a few issues you may face while scraping data from Amazon.

 

Why is it tough to scrape data from Amazon?

Before you start Amazon data scraping, you should know that the website discourages scraping in its policy and page-structure. Due to its vested interest in protecting its data, Amazon has basic anti-scraping measures put in place. This might stop your scraper from extracting all the information you need. Besides that, the structure of the page might or might not differ for various products. This might fail your scraper code and logic. The worst part is, you might not even foresee this issue springing up.

Amazon web scraping

You might even run into some network errors and unknown responses. Furthermore, captcha issues and IP (Internet Protocol) blocks might be a regular roadblock. You will feel the need to have a database. The lack of one might be a huge issue! You will also need to take care of exceptions while writing the algorithm for your scraper. This will come in handy if you are trying to circumvent issues due to complex page structures, unconventional (non-ASCII) characters, and other issues like funny URLs and huge memory requirements. Let us talk about a few of these issues in detail. We shall also cover how to solve them. Hopefully, this will help you scrape data from Amazon successfully.

Amazon can detect Bots and block their IPs

Since Amazon prevents web scraping on its pages, it can easily detect if an action is being executed by a scraper bot or through a browser by a manual agent. A lot of these trends are identified by closely monitoring the behaviour of the browsing agent. For example, if your URLs are repeatedly changed by only a query parameter at a regular interval, this is a clear indication of a scraper running through the page. It thus uses captchas and IP bans to block such bots. While this step is necessary to protect the privacy and the integrity of the information, one might still need to extract some data from the Amazon web page. To do so, we have some workarounds for the same. Let us look at some of these:

  1. Rotate the IPs through different proxy servers if you need to. You can also deploy a consumer grade VPN service with IP rotation capabilities.
  2. Induce random time-gaps and pauses in your scraper code to break the regularity of page triggers.
  3. Remove the query parameters from the URLs to remove identifiers linking requests together.
  4. Change the scraper headers to make it look like the requests are coming from a browser and not a piece of code.

A lot of product pages on Amazon have varying page structures

If you have ever attempted to scrape product descriptions and scrape data from Amazon, you might have run into a lot of unknown response errors and exceptions. This is because most of your scrapers are designed and customized for a particular structure of a page. It is used to follow a particular page structure, extract the HTML information of the same and then collect the relevant data. However, if this structure of the page changes, the scraper might fail if it is not designed to handle exceptions

A lot of products on Amazon have different pages and the attributes of these pages differ from a standard template.  This is often done to cater to different types of products that may have different key attributes and features that need to be highlighted. To address these inconsistencies, write the code so as to handle exceptions. Furthermore, your code should be resilient. You can do this by including ‘try-catch’ phrases that ensure that the code does not fail at the first occurrence of a network error or a time-out error. Since you will be scraping some particular attributes of a product, you can design the code so that the scraper can look for that particular attribute using tools like ‘string matching’. You can do so after extracting the complete HTML structure of the target page. 

Your scraper might not be efficient enough!

Ever got a scraper that has been running for hours to get you some hundred thousands of rows? This might be because you haven’t taken care of the efficiency and speed of the algorithm. You can do some basic math while designing the algorithm. Let us see what you can do to solve this problem! You will always have the number of products or sellers you need to extract information about. Using this data, you can roughly calculate the number of requests you need to send every second to complete your data scraping exercise. Once you compute this, your aim is to design your scraper to meet this condition! 

It is highly likely that single-threaded, network blocking operations will fail if you want to speed things up! Probably, you would want to create multi-threaded scrapers! This allows your CPU to work in a parallel fashion! It will be working on one response or another, even when each request is taking several seconds to complete. This might be able to give you almost 100x the speed of your original single-threaded scraper! you will need an efficient scraper to crawl through Amazon as there is a lot of information on the site!

You might need a cloud platform and other computational aids!

A very high-performance machine will be able to speed the process up for you! You can thus avoid burning the resources of your local system! To be able to scrape a website like Amazon, you might need high capacity memory resources! You will also need network pipes and cores with high efficiency! A cloud-based platform should be able to provide these resources to you! You do not want to run into memory issues! If you store big lists or dictionaries in memory, you might put an extra burden on your machine-resources! We advise you to transfer your data to permanent storage places as soon as possible. This will also help you speed the process up.

There is an array of cloud services that you can use for reasonable prices. You can avail one of these services using simple steps. It will also help you avoid unnecessary system crashes and delays in the process. 

Use a database for recording information

If you scrape data from Amazon or any other retail website, you will be collecting high volumes of data. Since the process of scraping consumes power and time, we advise you to keep storing this data in a database. Store each product or sellers’ record that you crawl as a row in a database table. You can also use databases to perform operations like basic querying, exporting and deduping on your dataThis makes the process of storing, analyzing and reusing your data convenient and faster!

Summary

A lot of businesses and analysts, especially in the retail and e-commerce sector need to scrape Amazon data. They use this data to make prices comparison, studying market trends across demographics, forecasting product sales, reviewing customer sentiment or even estimating competition rates. This can be a repetitive exercise. If you create your own scraper, it can be a time-consuming, challenging process.

However, Datahut can scrape e-commerce product information for you from a wide range of web sources and provide this data in readable file formats like ‘csv’ or other database locations as per client needs. You can then use this data for all your subsequent analyses. This will help you save resources and time. We advise you to conduct thorough research on the various data scraping services in the market. You may then avail the service that suits your requirements the best.

 

                                                                  ”  Download Amazon Data sample “

 

Wish to know more about how Datahut can help in your e-commerce data scraping needs? Contact us

Srishti Saha
An electronics and communication engineering graduate and a data scientist by profession, Srishti has a passion for upcoming tech and gadgets. She believes that IoT, AI, ML and Blockchain will come together to change the daily lives of human beings. She wishes to be part of this revolution.
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