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Change Cache-Control http header

Silver Contributor
Silver Contributor

Hi,

A customer wants to comply with the best practice requirements of google lighthouse. Therefore the response headers for any Tealium resources should contain a fairly hight max-age value.

> When possible, cache immutable static assets for a long time, such as a year or longer.
https://web.dev/uses-long-cache-ttl/

Is there a way to adjust this server setting? There should be no negitive effects as the urls contain a parameter for the version to load anyways. (cache bust on template update)

Greetings
Tobias

2 REPLIES 2
Highlighted

Change Cache-Control http header

Tealium Employee

Hi @MountainMaster as you mentioned we include a cache bust parameter by default (based on the current published version number) to ensure any change to a version always forces the client to request the latest version of the file.

Otherwise, some users could be running a different version of the configuration. This also means the utag files will be loaded with the same version from cache if no new versions have been published.

Summary: utag files have an explicit no-cache policy, which also means they are not immutable.

Highlighted

Change Cache-Control http header

Silver Contributor
Silver Contributor

Hi @rebman ,

Thank you for you reply.

My request was not about the real caching behavior, wich is fine. Its about getting 100% in Google's Lighthouse rating. Therefore resources have to have a long Cache-Control HTTP response header.

So is there any chance to change these, as the no-cache policy is enforced over parameters anyways?

Greetings