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The visual search engine for animated characters. We index characters by eye color, hair color, hair length, age, gender, and animal ears.

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Titles	13857	1 this month
Members	79443	70 this month
Quotes	335424
Voice Actors	10342	3 this month

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News | Aug 31, 2024 | ACDB, Bots, Performance

One down side of adding additional translations to the site is: web spiders, bots, and crawlers end up having index entire copies of the site. This has been pushing daily page requests near 3,000,000. while Google Analytics reported requests have remained around 100,000.

This works out to for every 1 request by a member, there are 30 requests by bots.

Our web server Nginx allows for rate limiting either at an IP level or a server level.

ACDB makes a lot of use of redirects so I can't really rate limit people to 1r/s without

1) Breaking the lounge
2) Making redirects take 2 seconds for the page to respond

I also can't give members more than 3r/s without risking race conditions.

This left me wanting a solution where I could have more generous rate limits for members and stricter rate limits for everyone else.

Unfortunately Nginx has some serious hatred problems for simple conditionals. They live under a mantra of ＂IfIsEvil＂.

Luckily, the world of programing is one where if you have a will, there is always a way.

Pushing aside useless AI summaries, I eventually landed on https://nginx.nginx.narkive.com/tRRv3Xv8/limit-req-inside-a-if-block-not-allowed

While this page's solution made use of a user agent check; that conditional could easily be replaced with a cookie test. A few tweaks later, the setup is live on ACDB. Members will enjoy a fast and responsive site as it should be while the bots will be limited to an amount of requests that shouldn't gum up the site again for a while.

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Rei

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Yesterday 11:19 am NatsumiSawada added an image Yesterday 11:18 am NatsumiSawada added an image Yesterday 08:51 am Demon010 modified a character Yesterday 04:13 am RamRol97 added an extra detail Yesterday 04:13 am RamRol97 added an extra detail Yesterday 04:13 am RamRol97 added an extra detail Yesterday 04:12 am RamRol97 modified a title Sep 5, 2024 RinaK new character Alice Okanega Sep 5, 2024 RinaK uploaded a character Sep 5, 2024 RinaK new character Yuusuke Nanpa Sep 5, 2024 RinaK uploaded a character Sep 5, 2024 RinaK new character Mami Kirara Sep 5, 2024 RinaK uploaded a character Sep 5, 2024 RinaK modified a title Sep 5, 2024 RinaK modified a title Sep 5, 2024 RinaK modified a title Sep 5, 2024 RinaK modified a title Sep 5, 2024 RinaK modified a title Sep 5, 2024 RinaK modified a title Sep 5, 2024 RinaK modified a title Sep 5, 2024 RinaK modified a title Sep 5, 2024 RinaK modified a title Sep 5, 2024 RinaK modified a title Sep 5, 2024 plipplop modified a character Sep 4, 2024 freakbob added a relation Sep 4, 2024 freakbob added a relation Sep 4, 2024 Rei modified a title Sep 4, 2024 1melco modified a character Sep 4, 2024 1melco modified a character Sep 4, 2024 Moon_Moon modified a title

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