The second option is to use proxy servers and rotate IP addresses after a certain number of requests. One option is to limit the maximum concurrency, and possibly even introduce delays (after reaching concurrency 1) in execution, to make the crawling process slower. There are two ways to work around rate limiting.
These anti-scraping protection techniques can be temporary or permanent. Another example could be a website that allows ten requests per minute and throws an error for anything above this threshold. This kind of anti-scraping protection can be either manual (meaning a human is checking logs, and if they see large volumes of traffic from the same IP address, they block it) or automatic.įor example, for, you can typically make only around 300 requests per day, and if you reach this limit, you will run into a CAPTCHA instead of search results. The second most common anti-scraping protection technique is to limit access based on the number of requests made from a single IP address in a certain period of time. On the Apify platform, you can use our pool of proxy servers based in the United States, you can ask us to provide you with a custom dedicated pool from the countries you need, or you can use your own proxy servers from services like Oxylabs or Bright Data (formerly Luminati).Īnti-scraping protections based on IP rate limiting It can often be easily bypassed by the use of a proxy server. For instance, websites will deny access to IP ranges of Amazon Web Services and other commonly known ranges. This kind of anti-scraping protection usually aims at reducing the amount of non-human traffic. Other protection techniques block access based on the IP range your address belongs to. They just want to show their content to users from given countries. Some protection techniques deny access to their content based on your IP address location. There are four main categories of anti-scraping tools:Īnti-scraping protections based on IP detection In this article, we will go through the most commonly used anti-scraping protection techniques and show you how to bypass them. However, sometimes it is still reasonable and fair (and based on a recent US court ruling also legit) to extract data from them. Some websites adopt anti-scraping protections.
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