How to protect your website from parsing?

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Several “technical” methods will help protect your site from parsing:

limiting the number of actions from one IP address during a certain period of time.
setting up reCAPTCHA to confirm that requests on your resource come from a real user, and not from a bot or parser;
permission to perform certain actions on the site only after registration;
blocking bots by IP. Will help if information is finland telegram number database copied in large volumes and on a regular basis. A significant disadvantage is that the resource may be blocked for search engine robots.
Also, you should pay attention to identical or very similar requests coming from different IP addresses at the same time. Parsing can be distributed and occur through proxy servers.

Note! The above methods do not guarantee complete protection against parsing of your site by competitors. They can be "bypassed" if the data is collected by a script developed by an experienced programmer.