Re: New global API rate limits deployed for anonymous requests

On Mon, Mar 16, 2026 at 11:45 AM Addshore via Wikitech-l <
[email protected]> wrote:

>
> I was then also directed toward `Api-User-Agent` and the hcakathon, and
> implemented this for requests, but still ran into 429 issues.
>
> I'll be trying to take a fesh look at this at some point to try and
> reoslve some issues.
>
> wikicrowd essentially makes requests to:
>  - Thumbnails such as this at 960px resolution
> https://upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Lake_LA-4-200_Buccaneer_AN1895272.jpg/960px-Lake_LA-4-200_Buccaneer_AN1895272.jpg
>
>
 Please note that in some cases the thumbnails in your tool get
rate-limited; those are in every case I've checked thumbnails at
non-standard sizes[1]. If you start enforcing standard sized thumbs, you
shouldn't see 429s or 403s

Hope this helps,

Giuseppe

[1] See https://www.mediawiki.org/wiki/Common_thumbnail_sizes "current
standard sizes in wikimedia production"
-- 
Giuseppe Lavagetto
Principal Site Reliability Engineer, Wikimedia Foundation

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