1531444 - Confirm that CDN caching is enabled and requested URLs are consistent

Status: RESOLVED FIXED

(Firefox :: New Tab Page, defect, P2)

Description

[Gavin Suntop [:gvn] (they/them)]

Telemetry is showing unusually high feed request time.

Please ensure that the CDN caching is enabled and also investigate URL requests to ensure that a cachebusting scenario isn't in effect (EG: random or highly variable query values being appended).

Comment 1

[Mathijs Miermans]

We're actually using Akamai instead of CloudFront as the CDN. Digi took a look and it seems that Akamai doesn't offer fine-grained analytics to check the cache hits/misses for a particular endpoint.

It's unlikely that this is the cause, because I see a distinct difference between making requests to getpocket.com (~400 ms) and getpocket.cdn.mozilla.net (~20 ms). Additionally the feeds use the same endpoint as on release, so we should get the same performance there.