Steps to reproduce:
Looking at the log you will see that you get 429 Too Many Requests errors from the map server.
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Duplicate | None | T153369 Static maps service crashes on broken images (used in icons) | |||
| Resolved | awight | T141304 Only a part of MAKI symbols is available (previously map icon "castle" broken) | |||
| Stalled | None | T141335 Add maps support for marks with 3 digits | |||
| Resolved | awight | T145475 Update to latest maki | |||
| Resolved | None | T302861 Actually update the Maki icons | |||
| Resolved | awight | T316779 Deploy updated Maki icons to production | |||
| Invalid | None | T317622 429 Too Many Requests when first expanding icon help map |
In the debugger, I see roughly 280 requests to maps-beta, and throttling is kicking in somewhere above 100. If you load the overlay at the same time as the base page, it's roughly 500 requests. I think that in production, we'll be throttled by the general fallback rule here, which allows for a burst of 1000 requests from a client. So in theory, this page will be fine in production.
However, I haven't been able to find the rule which is throttling differently on beta, so I have a low confidence in the findings so far. I'll do an experiment with a map on production with hundreds of icons.
Experimentally, we can get 380 requests served rapidly on a test page in production, so we're hoping this issue is specific to the beta cluster.