Safari ETag Caching Limit – Files above around 120MB Not Cached

I'm facing two issues with Safari's caching behavior:

1. File Size Caching Limit:

Safari seems to cache files only up to approximately 120MB, discarding anything larger, whereas other browsers don’t exhibit this limitation.

• Is this a known restriction in Safari?
• Are there any workarounds to enable caching for larger files?
• Would modifying Cache-Control headers help, or is this purely an internal Safari behavior?

I also attempted to increase Safari’s cache size, but it didn’t seem to have any effect. Has anyone successfully bypassed this limitation?

2. Inconsistent If-None-Match Behavior:

For some cached files, I observe a 304 Not Modified response, yet the If-None-Match header is missing from the request.

• What could cause this inconsistency?
• Under what conditions does Safari decide not to send If-None-Match?

Any insights or suggestions would be greatly appreciated!