Practice global database vocabulary: distributed databases, geo-partitioning, cross-region replication lag, primary region writes, and tools like CockroachDB.
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'CockroachDB ___ data across regions.' Which verb fits?
CockroachDB 'distributes' data — it automatically spreads ranges (data shards) across nodes in multiple regions while maintaining consistency via the Raft consensus protocol.
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'The ___ region serves writes.' Which adjective describes the authoritative region?
The 'primary region' is the designated region that accepts writes in a multi-region database setup. Secondary regions replicate data from the primary and serve reads with lower latency.
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'Geo-___ the table by user country.' Which verb fits?
'Geo-partition' means placing rows in the region closest to where they're accessed, based on a partitioning key like user country. This reduces read/write latency for local users.
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'Cross-region ___ lag is 50ms.' Which noun is correct?
'Replication lag' is the delay between a write committed in the primary region and that write being visible in secondary regions. 50ms is typical for cross-region replication.
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What does 'globally distributed but locally consistent' mean for a database?
This phrase describes distributed databases like CockroachDB: data spans many regions (globally distributed) but transactions within a region or a defined locality see strong consistency.