Architect's Guide
Jan 26, 2023 · Databases
Primary Key and Index Design for Distributed Databases
The article explains why auto‑increment primary keys are unsuitable for sharded databases, recommends globally unique ordered identifiers, and details index and global‑table strategies—including redundant tables, index tables, and embedding shard information in keys—to achieve efficient single‑shard queries.
Primary KeySQLSharding
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