data locality
Place related data and computation close to reduce remote work.
Use this when A request crosses regions or shards repeatedly to join related records.
without the term
“This request keeps crossing regions to read related data. Find a placement that reduces those trips.”
with the term · How do you ask a model for data locality?
Trace remote hops for this request. Improve data locality and verify latency without weakening the required durability.
What is data locality?
Data locality is the proximity of data to the work that uses it. Placement by tenant or region can reduce network hops, while replication and durability requirements may still require remote coordination.
Why does data locality matter when vibe coding?
An agent can add a local read replica while writes and joins still cross the network.
How do you do data locality?
Map request hops, key placement, and transaction participants. Compare local and remote paths under the chosen durability and failure policy.
What goes wrong with data locality?
Local reads do not imply local writes, regulatory compliance, or survival of a regional failure.
Sources for this entry
- CockroachDB: Table localities
Regional placement changes where reads and writes incur network latency and how data survives regional failures.
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