2025-12-13: don’t use expensive hash in your tests
I was using Bun.password.hash for hashing passwords in an app I’m working on.
The default behavior uses argon2, which is great for security, but
unfortunately very slow.
It never appeared to me that was the cause of my tests taking forever to run, because in each I have to login. I knew something was very wrong, but the profiling output made it very clear :-)
2025-10-27: don’t use mtime with deployed files
I used mtime to get the last updated date of some entries in my blog and it
worked fine locally. I missed the point that when I deploy this website, the
repository is cloned and mtime isn’t preserved. A better way to fix this is to
use git: git log -1 --format=%ai -- <file>, but keep in mind that it won’t
work before the file is committed.