cache timing inforamtion, request and response time

[Larry]

Dear Chromium Team,

I am a university student currently working on a research project about web browser cache systems, focusing on how Chromium and Google Chrome store and manage cached data.

Specifically, my project investigates implicit and explicit timing information and related artefacts that might be stored in the Simple Cache backend used by Chrome.

I have already used CCL_Chromium Cache to extract and examine the cache files, but I am having trouble finding where exactly the request and response times for a cached file are stored.

I would greatly appreciate any detailed technical information on:

• Where exactly the Simple Cache files are stored for Chrome profiles on different operating systems

• How the Simple Cache file format is structured (headers, index, data layout, etc.)

• Where the request and response time metadata is located within the cache

• Any recommended tools, source code references, or best practices for safely parsing and analyzing this information

• And any additional information about how Chromium stores other related artefacts that might reveal implicit or explicit timing data

Any official documentation, code references, or advice you could share would be extremely helpful for my research.

If this is not the right place to ask, I would be grateful if you could direct me to the best contact, mailing list, or discussion channel for this kind of technical question.

Thank you very much for your time and support — any additional pointers on related areas in Chromium’s caching or storage subsystems would also be very welcome.