Improving storage efficiency in Magic Pocket, our immutable blob store
Here is a 2-3 sentence summary of the blog post:
Dropbox's immutable blob store, Magic Pocket, experienced a significant increase in storage overhead due to a new service causing under-filled volumes, which were not efficiently reclaimed by the existing compaction strategy. To address this, Dropbox developed a multi-strategy approach to drive overhead back down below the previous baseline, combining a new compaction strategy for dealing with under-filled volumes with existing garbage collection and compaction processes. The new solution enables faster and more efficient reclamation of space, crucial for maintaining cost-effectiveness and scalability in an exabyte-scale storage system.
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