REAL-TIME SHARD REBALANCING FOR VERSIONED ENTITY REPOSITORY

摘要

In various embodiments, methods and systems for rebalancing database shards are provided. Candidate entities in the database shards are identified for rebalancing. The candidate entities have corresponding existing locations in the database shards. New locations are determined for the candidate entities in the database shards. A shard map is created that identifies the new locations in the database shards for the identified candidate entities. When data for the identified candidate entities is received, the data for the identified candidate entities is written to the locations in the database shards identified in the shard map. Existing data for the identified candidate entities is maintained at their corresponding existing locations in the database shards.