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# CockroachDB vs Postgres: The Honest Verdict (2026)
- URL: https://www.edgewisely.com/cockroachdb-vs-postgres/
- Published: 2026-11-11T05:16:10.000Z
- Updated: 2026-11-11T05:16:10.000Z
- Description: CockroachDB vs Postgres, compared neutrally: Postgres wins as the default; pick CockroachDB only for true multi-region scale. Full verdict inside.
- Author: John Karpentar
- Tags: Engineering, Cloud

**TL;DR**

- **CockroachDB vs Postgres is a false either/or for most teams.** PostgreSQL is a single-node relational database; **CockroachDB is a distributed NewSQL database** that merely *speaks* the Postgres protocol.
- **Postgres is the right default** — simpler, cheaper, richer ecosystem. Current stable: **PostgreSQL 18** (18.6, August 2026), under the permissive PostgreSQL License.
- **Reach for CockroachDB** only for genuine horizontal write scaling, multi-region latency or data residency, or survive-a-datacenter-failure uptime. Current stable: **v26.4** (GA 26 October 2026).
- **Licensing trap:** CockroachDB's old free self-hosted "Core" tier is gone. It now ships under the **CockroachDB Software License**; self-hosted Enterprise is **free only for companies under $10M annual revenue**.

CockroachDB and PostgreSQL are not interchangeable. PostgreSQL is a mature single-node relational database and the right default for most workloads. CockroachDB is a distributed, horizontally scalable SQL database that speaks the Postgres wire protocol but is not Postgres underneath. Choose CockroachDB only when you genuinely need multi-region scale or survivability.

## What is the difference between CockroachDB and PostgreSQL?

PostgreSQL runs as a **single primary node** (plus optional read replicas) using **MVCC** and streaming or logical replication. One node takes writes. Scaling writes beyond it means sharding or add-ons like Citus.

CockroachDB is **distributed by design**. It splits data into **ranges**, replicates each range across nodes using the **Raft consensus protocol**, and rebalances automatically. Any node can take writes (**multi-active availability**), and the default isolation is **SERIALIZABLE**, the strictest level.

That architectural gap is the whole story. Postgres optimizes for simplicity and a single strong node. CockroachDB trades operational simplicity for horizontal scale and survivability. CockroachDB advertises Postgres compatibility, but that is wire-protocol and dialect compatibility, not a shared engine.

## Is CockroachDB compatible with PostgreSQL?

Partly, and that is the honest answer. CockroachDB implements **PostgreSQL wire protocol 3.0** and reports **PostgreSQL 18 metadata**, so most Postgres drivers, ORMs, and tools connect without code changes. Application migration is genuinely easier because of this.

But **CockroachDB is not a drop-in Postgres replacement**. The SQL dialect is a large subset, not a superset. Per [CockroachDB's PostgreSQL compatibility docs](https://docs.cockroachlabs.com/docs/stable/postgresql-compatibility?ref=edgewisely.com), the v26 series does **not** support:

- **Range types**, **XML functions**, and **foreign data wrappers**
- **Column-level privileges** and **session-scoped advisory locks**
- **Events**, **XA syntax**, and creating a database from a template
- Full `pg_dump`/`pg_restore` (only schema-only, plain-format dumps work)

Behavior also differs on identical input — integer division returns a decimal, float overflow returns `+Inf` instead of erroring, and some operator precedence differs. Anything relying on Postgres extensions (PostGIS-grade GIS, `pg_cron`, [pgvector for vector search](https://www.edgewisely.com/pgvector-vs-qdrant/), or custom C extensions) needs checking before you assume `cockroachdb postgres compatibility` covers it.

## Is CockroachDB faster than PostgreSQL?

Not for single-node workloads. **Postgres is typically faster and lower-latency on a single machine**, because CockroachDB pays a coordination cost — Raft consensus means writes commit across replicas, often across regions.

CockroachDB wins on a different axis: **throughput under horizontal scale**. Add nodes and write capacity grows roughly linearly, which a single Postgres primary cannot do. For a global app, CockroachDB can also keep data physically close to users, cutting cross-region latency that a single-region Postgres can't avoid.

We don't cite a headline benchmark number here because published figures are vendor-run and workload-specific. The useful rule: **single node, pick Postgres; many nodes across regions, CockroachDB's model pays off.**

## CockroachDB vs Postgres: feature comparison

| Dimension                | PostgreSQL                              | CockroachDB                                         |
| ------------------------ | --------------------------------------- | --------------------------------------------------- |
| **Architecture**         | Single primary + read replicas          | Distributed, Raft consensus over data ranges        |
| **Scaling writes**       | Vertical; sharding/Citus for more       | Horizontal, add nodes                               |
| **Default isolation**    | Read Committed                          | **SERIALIZABLE**                                    |
| **Concurrency model**    | MVCC, process-per-connection            | MVCC, distributed                                   |
| **Multi-region**         | Add-ons / manual                        | Native, built-in                                    |
| **Survivability**        | Failover (replica promotion)            | Multi-active, survives node/DC loss                 |
| **Current stable**       | **18** (18.6, Aug 2026)                 | **v26.4** (GA Oct 2026)                             |
| **License**              | The PostgreSQL License (permissive OSS) | **CockroachDB Software License** (source-available) |
| **Self-hosted cost**     | Free                                    | Enterprise; **free only under $10M revenue**        |
| **Ecosystem/extensions** | Enormous, mature                        | Growing, with gaps                                  |

Versions above are current as of November 2026: PostgreSQL's latest stable is [18.6](https://www.postgresql.org/?ref=edgewisely.com), released August 2026 (version 19 is at release candidate, not GA), and CockroachDB's latest production release is [v26.4](https://docs.cockroachlabs.com/docs/releases?ref=edgewisely.com), GA 26 October 2026.

## What does CockroachDB cost vs Postgres?

**PostgreSQL itself is free, open-source software.** You pay only for hosting — self-managed, or managed via Amazon RDS/Aurora, Google Cloud SQL, Azure, and others.

CockroachDB is **no longer free to self-host at scale**. Since the 24.3 release it ships under the [CockroachDB Software License](https://docs.cockroachlabs.com/docs/stable/licensing-faqs?ref=edgewisely.com). Self-hosted Enterprise is **free only for companies under $10M in annual revenue** (parent plus affiliates combined), requires annual renewal, and gets community-only support. Above that threshold, you pay.

CockroachDB Cloud (branded **Cockroach Continuum**) lists two editions on its [pricing page](https://www.cockroachlabs.com/pricing/?ref=edgewisely.com): **Standard** (shared infrastructure) at roughly **$0.092 per vCPU-hour** (about **$203/mo** for 2 vCPU / 100 GB) and **Mission Critical** (dedicated) at roughly **$0.162 per vCPU-hour** (about **$1,528/mo** for 12 vCPU / 100 GB) on AWS us-east-1\. New organizations get a **30-day trial with $400 credit**.

## What this means for you

**If you're a solo dev or small SaaS (single region):** Use **PostgreSQL**. It is simpler, free, has the richest extension ecosystem, and covers the vast majority of workloads. Don't take on a distributed database's operational overhead for scale you don't have.

**If you run a single-region SaaS that's growing:** Stay on **Postgres** and scale vertically plus read replicas first. Consider CockroachDB only when you hit real single-primary write limits — and weigh Citus or managed Aurora first.

**If you run a global, multi-region platform:** CockroachDB earns its place. Native data domiciling, low cross-region latency, and horizontal write scaling are things single-node Postgres cannot match without heavy engineering.

**If you have strict uptime or data-residency requirements (regulated data):** CockroachDB's multi-active survivability and per-row geo-partitioning are purpose-built for this. Budget for the Enterprise license and the operational complexity.

If your real need is time-series or analytics rather than general-purpose OLTP, that's a different comparison — see [TimescaleDB vs InfluxDB](https://www.edgewisely.com/timescaledb-vs-influxdb/) for time-series, or [ClickHouse vs DuckDB](https://www.edgewisely.com/clickhouse-vs-duckdb/) for analytics.

## Frequently Asked Questions

### What is the difference between CockroachDB and PostgreSQL?

PostgreSQL is a single-node relational database with one write primary, using MVCC and replication. CockroachDB is a distributed database that splits data into ranges, replicates them with the Raft consensus protocol across nodes, and scales writes horizontally. CockroachDB speaks the Postgres protocol but runs a fundamentally different engine built for multi-region scale.

### Is CockroachDB compatible with PostgreSQL?

Partially. CockroachDB implements PostgreSQL wire protocol 3.0 and reports PostgreSQL 18 metadata, so most drivers, ORMs, and tools connect without changes. But it supports only a large subset of the SQL dialect. Range types, XML functions, foreign data wrappers, column-level privileges, and full pg\_dump/restore are unsupported, so it is not a drop-in replacement.

### Is CockroachDB faster than PostgreSQL?

Not on a single node. Postgres is usually faster and lower-latency on one machine because CockroachDB pays a Raft consensus cost on writes. CockroachDB wins on horizontal throughput: adding nodes scales write capacity roughly linearly, and multi-region deployments cut latency for globally distributed users that a single-region Postgres cannot serve as quickly.

### When should you use CockroachDB instead of Postgres?

Use CockroachDB when you genuinely need horizontal write scaling beyond one node, multi-region data placement for latency or residency, or survive-a-datacenter-failure uptime — and you accept the operational and licensing cost. For single-region apps and most SaaS, PostgreSQL remains the simpler, cheaper, richer default. Don't adopt a distributed database for scale you don't have.

### Can CockroachDB replace PostgreSQL?

For many apps, technically yes — the Postgres wire-protocol compatibility means app and ORM code often migrates with minimal changes. But it's not a transparent swap. You must audit for unsupported features (extensions, range types, certain SQL), behavioral differences, and the licensing cost above $10M revenue. Replace Postgres only when CockroachDB's distributed model solves a real problem you have.

**Editor's note — sources:** CockroachDB current release (v26.4, GA 26 October 2026): Cockroach Labs release notes (docs.cockroachlabs.com/docs/releases). CockroachDB licensing (CockroachDB Software License; Enterprise free under $10M revenue): Cockroach Labs licensing FAQs. PostgreSQL-compatibility gaps and wire protocol 3.0 / PG18 metadata: CockroachDB PostgreSQL compatibility docs. PostgreSQL current version (18 / 18.6, August 2026; 19 at release candidate): postgresql.org. CockroachDB Cloud pricing (Cockroach Continuum, Standard and Mission Critical): cockroachlabs.com/pricing. Analysis and verdict are Edgewisely's own.