engineering
Computing SHA-256 in the browser without freezing the tab
How we hash multi-gigabyte RAW files in the browser during upload — streaming through Web Crypto, with no main-thread stalls — and why the obvious approach doesn't work.
Patrick Meehan · 5 min read · Oct 29, 2025
backup
Why we chose Backblaze B2 for the vault
A founder's-eye view of the storage vendor decision: S3 vs B2 vs R2 vs Wasabi, what the per-TB numbers actually look like at small scale, and why we picked Backblaze for the master copy.
Patrick Meehan · 8 min read · Aug 26, 2025