Sound familiar?
- ▸ Distributed SQL shortlist — your team has narrowed to CockroachDB and YugabyteDB and needs a defensible engine decision before committing to a proof-of-concept timeline.
- ▸ Licensing constraint — your distribution model flagged BSL/CCL as a blocker, and YugabyteDB's Apache 2.0 licence is the safer choice but you need to validate the feature parity.
- ▸ Cassandra + Postgres consolidation — you're running both engines for different workloads and YugabyteDB's YSQL+YCQL dual API promises a single platform.
JusDB consultants build the CockroachDB-vs-YugabyteDB decision against your workload — and run the proof-of-concept design too. Book a distributed-SQL scoping call →
CockroachDB vs YugabyteDB
Short answer: Choose CockroachDB for pure-Postgres-replacement intent, always-serializable isolation, and polished multi-region tables; choose YugabyteDB when you need Apache 2.0 licensing, Cassandra+Postgres consolidation via YCQL+YSQL, or deeper Postgres-extension support. Both are Spanner-inspired, Postgres-protocol-compatible distributed SQL — benchmark against your workload.
Two Spanner-inspired distributed-SQL engines, both Postgres-protocol-compatible. Licensing, dual API (YSQL+YCQL), multi-region table primitives, default isolation — the production-DBA view of when each one wins.
Feature matrix
| Dimension | CockroachDB 23+ | YugabyteDB 2.x+ |
|---|---|---|
| Architecture | Spanner-style — Raft per key range, Pebble storage engine | Spanner+Cassandra hybrid — Raft per tablet, RocksDB storage |
| API surface | Postgres wire-protocol only (PostgreSQL-compatible SQL) | YSQL (Postgres-compat) + YCQL (Cassandra-compat) dual API |
| Default isolation | Serializable (always — no Read Committed option) | Snapshot isolation default; Serializable opt-in per transaction |
| Multi-region tables | REGIONAL BY TABLE / REGIONAL BY ROW / GLOBAL — explicit SQL syntax | Tablespaces + replica placement policies — config-driven |
| License | BSL → CCL after 3 years (source-available; commercial use needs licence) | Apache 2.0 (permissive, OSI-approved, no copyleft) |
| Postgres compatibility | ~90% — DDL gaps (no inheritance, no extensions, limited triggers) | ~95% — built on actual Postgres query layer; more extension support |
| Extensions | Limited — no extension model | Selected Postgres extensions supported (pgcrypto, fuzzystrmatch, etc.) |
| Backup / restore | Native distributed backup; PITR available | Native distributed backup; PITR available |
| Online schema change | Native online schema changes for most DDL | Native online schema changes |
| Cloud-managed | CockroachDB Cloud — Serverless + Dedicated, AWS/Azure/GCP | Yugabyte Aeon — Serverless + Dedicated, AWS/Azure/GCP |
| Migration tooling | MOLT (Migrate Off Legacy Tools) for Postgres → CockroachDB | yb-voyager for Postgres / Oracle → YugabyteDB |
| Best for | Pure-Postgres-replacement, polished multi-region, strong serializable | Permissive licence, Cassandra + Postgres consolidation, Postgres-extension support |
When CockroachDB wins
- Pure-Postgres-replacement intent with no Cassandra-compat requirement.
- Multi-region tables with locality control are central to the architecture.
- Always-serializable isolation is a hard requirement (financial, inventory).
- Spanner-style operational model fits team K8s + observability expertise.
- BSL/CCL licence is acceptable for your distribution model.
- CockroachDB Cloud's polish + multi-region SaaS pricing matches the workload.
When YugabyteDB wins
- Apache 2.0 licence is a hard requirement (SaaS, ISV, vendor-neutral procurement).
- Cassandra + Postgres consolidation via YCQL+YSQL is real value.
- Postgres-extension support (pgcrypto, hstore, etc.) matters.
- Snapshot isolation default fits the workload (less contention overhead).
- YSQL's deeper Postgres-query-layer compatibility avoids ORM edge cases.
- Yugabyte Aeon's pricing fits the workload better than Cockroach Cloud.
Migration
Migration paths between CockroachDB and YugabyteDB
CockroachDB → YugabyteDB
Usually licensing-driven (BSL/CCL → Apache 2.0). Schema portable via Postgres-protocol; isolation semantics need validation (always-Serializable → Snapshot default). Data movement via standard tools; application-tier validation is the real cost.
YugabyteDB → CockroachDB
Less common — usually team-driven (preference for serializable-by-default, polish of multi-region primitives). Postgres-portable schema; if YCQL was in use, need to redesign Cassandra-shaped tables to relational.
Either → stay on Postgres
Honest assessment: many teams considering distributed SQL would be better served by single-primary Postgres + Patroni + Citus. The 10-20% workloads that genuinely need distributed semantics are real; the rest is over-engineering. We test the "stay" option before recommending migration.
Common questions
Need a written distributed-SQL decision?
We benchmark both engines against your workload, surface the licensing impact, and write the recommendation with the proof-of-concept design.