Databases

MongoDB Multi-Document Transactions: When Not to Use Them

Multi-document transactions look like the safe default, but commit ambiguity and PSA availability traps make them costly. Here is when to skip them.

Jun 8, 2026 11 min read mongodbtransactionsidempotencygodatabases

Backend

Reading MP4 Metadata From a 2GB File Without Downloading It

An MP4 keeps duration and codec info in a moov box. Here is how to fetch only that box over HTTP Range and skip the gigabytes of media payload.

Jun 5, 2026 12 min read mp4http-rangevideogometadatastreaming