SYSTEM Cited by 1 source

ZippyDB (Meta key-value store)

Definition

ZippyDB is Meta's distributed key-value store, used as the backing store for the unified BLOB-storage metadata schema in the re-architected AI storage stack.

Role in AI Storage

In the 2026 BLOB-storage re-architecture, ZippyDB replaced the multi-layer metadata system (namelayer, volumeslayer, containerlayer) with a single flat schema enabling O(1) lookup per chunk to resolve object paths to (blockId, offset, size) tuples — a step-function improvement over the prior cascading metadata lookups that could add hundreds of milliseconds and cross regions.

(Source: sources/2026-07-01-meta-ai-storage-blueprint-at-scale)

Prior References

Meta's 2021 blog post "ZippyDB: The Architecture of a Distributed Key-Value Store" provides the original public architecture description (not ingested on this wiki).

Seen in

• sources/2026-07-01-meta-ai-storage-blueprint-at-scale — ZippyDB as unified metadata store for BLOB storage