Closed Bug 1012873 Opened 11 years ago Closed 8 years ago

Cache negative responses for sourcemaps on the client

Categories

(DevTools :: Debugger, defect, P3)

Product:
DevTools
Component:
Debugger
Platform:
Other
Android
Type:
defect

Tracking

(Not tracked)

Status:
RESOLVED FIXED

People

(Reporter: hsteen, Unassigned)

References

(Blocks 1 open bug,
URL
)

Details

Often while debugging, I see Firefox hammering servers requesting missing .map files if the developer tools are open.

For example, today I was looking at mapquest.com mobile site. It includes http://content.mqcdn.com/mobileweb-advanced-804/media/js/mqm-site.js which contains //@ sourceMappingURL=jquery.min.map - and I've logged 490 requests for http://content.mqcdn.com/mobileweb-advanced-804/media/js/jquery.min.map . (Response is mostly 404, sometimes 504 gateway timeout error). 

Firefox fires off something like 30 requests at a time. The implementation should be reviewed to see why there are so many simultaneous requests, and we should cache negative responses for some period of time. Bonus points if the cache can be annotated with a hash of the file referencing it or something, so that if the file's content changes the cache is invalidated..
> we should cache negative responses for some period of time.

Ideally it would be cached per navigation.
Summary: cache negative source map responses for the duration of the session (or something like that..) → Cache negative responses for sourcemaps on the client
Priority: -- → P3
the new UI caches source map requests.
Status: NEW → RESOLVED
Closed: 8 years ago
Resolution: --- → FIXED
Product: Firefox → DevTools
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