What Are Range Sharding, Directory‑Based Sharding, and Geo‑Sharding, and What Are the Common Use Cases?

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What Are Range Sharding, Directory‑Based Sharding, and Geo‑Sharding, and What Are the Common Use Cases?

Range sharding, directory-based sharding, and geo-sharding are database sharding strategies that horizontally partition data across multiple servers – range sharding splits data by contiguous value ranges, directory-based sharding uses a lookup table to map data to specific shards, and geo-sharding partitions data by geographic region to keep data close to its users.

These three approaches are among the most common database sharding techniques (alongside hashed sharding).

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