Improving storage efficiency in Magic Pocket, our immutable blob store. Dropbox spiega come funziona il suo sistema di storage per i dati degli utenti, e come un bug ha portato ad avere volumi di storage usati solo in piccola parte e come poi sono stati "ricompattati".
Magic Pocket is the core Dropbox storage system—a custom-built, exabyte-scale blob storage system designed for durability, availability, scale, and efficiency. It holds user content, which means it must be safe, fast, and cost-effective to scale with the company. For Dropbox, storage efficiency really matters. We measure it by looking at how much total disk space we use compared to how much user data we’re actually storing.