3 tagged distributed database, measured the same way as everything else here.
Instructions file
Claude Code instructions for cockroachdb/cockroach, covering claude.md, cockroachdb development environment, essential commands, build package ./pkg/util/log and build the tests in package ./pkg/util/log.
Instructions file CodexOpenCode
AGENTS.md instructions for yugabyte/yugabyte-db, covering agents.md, deploying and running, repo structure, coding and development and cursor cloud specific instructions.
Instructions file
Claude Code instructions for yugabyte/yugabyte-db, a project described as: YugabyteDB - the cloud native distributed SQL database for mission-critical applications.