364
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 28 May 2026
364 points (98.7% liked)
Technology
84998 readers
3478 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related news or articles.
- Be excellent to each other!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
- Check for duplicates before posting, duplicates may be removed
- Accounts 7 days and younger will have their posts automatically removed.
Approved Bots
founded 3 years ago
MODERATORS
Yeah, I guess I was fundamentally misunderstanding OPFS. I was thinking it was just resident in memory as a process of the browser. What exactly does this line mean, though?
The OS can cache parts of files in RAM to speed up accesses. That cache is called the page cache. If your file is big enough you can fairly reliably access random parts of it and expect the OS to not have cached them no matter how big the page cache is. So each read hits the SSD, allowing you to observe its performance.
Neat. Thank you for the explanation.