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How Not To Get Banned
First, you need to set a HTTP_USER_AGENT for the tool you will be accessing ACDB from.
You will get errors like ( 402 Payment Required ) if Python,Perl,etc is in your user agent.
If you leave it with the default, you will be joining a pool of people who also left it default, and together may pose a DDoS threat. This is why I auto ban curl/python/wget any any other popular tool.
To safely check your user agent, visit this page: https://www.animecharactersdatabase.com/vars.php
Second, you need to rate limit your requests.
NGINX handles rate limiting. Respectfully, limit your bot to 1 request per second.
limit_req_zone $binary_remote_addr zone=one:10m rate=5r/s; limit_req_zone $server_name zone=fast:10m rate=90r/s; limit_req zone=one burst=10; limit_req zone=fast burst=200;