Notes

What we learned building RocketBucket, written down while it was still fresh.

September 8, 2026

500 GB to R2: what happens when a huge upload stops, and when it starts again

Multipart upload and resume in RocketBucket: 9,847 parts, a journal that outlives the app, zero re-reads on resume, and a completion proof that waits for R2 to assemble. Peak memory about 900 MB to 1 GB.