[state_machine]

[cockroachdb employee]

Short answer: no.

Long answer: at their closest earth and mars are about 54m km apart, at the furthest it's over 400, with an average of around 225m km, so theoretical latency is varies between 4 and 24 minutes.

CockroachDB uses synchronous replication via raft, and that latency would cause problems as would some other setting like our window sizes and their interaction with timeouts.

[politician]

> CockroachDB uses synchronous replication via raft

Deep space aside, I wish the announcement just said that! I came back to HN for insight into the paragraph about "multi-active availability... an evolution in high availability from active-active replication". Marketing... sometimes... I tell you what.

[state_machine]

Whoops, sorry about that. If you're looking for more on how it works (rocksdb, raft, distributed transactions across multiple raft groups, etc), you might find the design doc interesting: https://github.com/cockroachdb/cockroach/blob/master/docs/de...