Add customizable thumbnail cache management

[nicpadilla]

What is it?

• Bugfix
• Feature
• Codebase improvement

Description of the changes in your PR

Add user-configurable thumbnail cache size limits to give users more options for memory management. Glide's default thumbnail cache size is 250MB which is insufficient for larger galleries. This adds a new section in the settings menu to:

• View current cache usage
• Select from predefined cache size limits (250MB default, 500MB, 1GB, 2GB, 5GB)
• Clear the thumbnail cache manually

Before/After Screenshots/Screen Record

• Before:

• After:

Fixes the following issue(s)

• Fixes Hope to add the option to set the cache upper limit  #260

Relies on the following changes

Acknowledgement

• I read the contribution guidelines.

[naveensingh]

• I read the contribution guidelines.

Nice but please read the contribution guidelines:

Before fixing a bug or adding a new feature, ensure it’s already reported or requested in the repository, open, and doesn’t have the needs triage label. If the issue is closed or has needs triage label, your PR will likely be rejected. The only exceptions are critical bugs that we weren't able to classify yet.

(Also, I'm curious. Did you use some agentic tool like Claude Code for this?)

Thanks!

[nicpadilla]

Got it. Heh, I did use Cursor (Claude 3.7 in particular) to help. What was the giveaway?

Anyhow, anything I can do to get this triaged so this could be considered?

[naveensingh]

Heh, I did use Cursor (Claude 3.7 in particular) to help. What was the giveaway?

Hehe. I got mad AI detection skills ;)

Anyhow, anything I can do to get this triaged so this could be considered?

Not really, it's just not planned for now. You may subscribe to the issue, I'll comment if/when it's ready for development.
Thanks, though.

[JamesPous]

I would like to see this cache setting in one of the next releases, because my gallery app went to the 250 MB limit.
Is there a chance to see this feature in the future? Does the source code violate to the applicable rules?