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A multi-region location consists of a defined set of
regions where multiple replicas of the database
are stored. Each replica is either a read-write replica which contains
all of the data in the database or a witness replica which does not
maintain a full set of data but participates in replication.
By replicating the data between multiple regions, data
can continue to be served even with the loss of an entire
region. Within a region, data is replicated across
zones so that data can continue to be served
within that region even with the loss of a zone.
Each multi-region location includes at least two read-write regions that serve
read and write traffic. A third region is a witness region in nam5 and
a read-write region in eur3.
The following multi-region locations are available:
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-04-02 UTC."],[[["This page describes the system behavior for Legacy Cloud Datastore databases, not Firestore in Datastore mode."],["Multi-region locations store multiple database replicas across different regions for data redundancy."],["Data is also replicated across zones within a region to ensure continued service in case of a zone failure."],["Each multi-region includes at least two read-write regions that process both read and write operations and a witness region that participates in replication."],["There are currently two multi-region locations available, `eur3` for Europe and `nam5` for the United States, each with their own assigned read-write regions and a witness region."]]],[]]
