CockroachDB vs Amazon Aurora Serverless: Head-to-Head Comparison

Quick Verdict

CockroachDB is the better pick for globally distributed transactional workloads. Amazon Aurora Serverless is the better pick for AWS workloads with variable traffic.

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At a Glance

Feature	CockroachDB	Amazon Aurora Serverless
Best For	Globally distributed transactional workloads	AWS workloads with variable traffic
Pricing	Free tier with paid plans	Pay-as-you-go usage pricing
Free to Start	Yes	No
License	Source-available	Proprietary
Deployment	Self-hosted or managed cloud	Managed cloud
Link	Visit CockroachDB	Visit Amazon Aurora Serverless

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Detailed Breakdown

CockroachDB

Distributed SQL database with Postgres compatibility

Pros:

• Strong consistency across regions
• Survives node and region failures
• Postgres wire compatibility

Cons:

• Not fully Postgres compatible
• Higher latency for simple single-region workloads

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Amazon Aurora Serverless

Auto-scaling MySQL and PostgreSQL on AWS

Pros:

• Automatic capacity scaling
• MySQL and Postgres compatibility
• Deep AWS integration

Cons:

• AWS only
• Pricing can be complex to estimate

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Key Differences

• Positioning: CockroachDB — distributed SQL database with Postgres compatibility. Amazon Aurora Serverless — auto-scaling MySQL and PostgreSQL on AWS.
• Licensing differs: CockroachDB is source-available while Amazon Aurora Serverless is proprietary.
• Deployment: CockroachDB — self-hosted or managed cloud. Amazon Aurora Serverless — managed cloud.
• CockroachDB can be started for free, while Amazon Aurora Serverless requires a paid plan. Amazon Aurora Serverless pricing: pay-as-you-go usage pricing.
• Signature strength: CockroachDB — strong consistency across regions. Amazon Aurora Serverless — automatic capacity scaling.

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Frequently Asked Questions

Is CockroachDB better than Amazon Aurora Serverless?

It depends on your requirements. CockroachDB is a strong fit for globally distributed transactional workloads, while Amazon Aurora Serverless suits AWS workloads with variable traffic.

Is CockroachDB free to use?

Yes, you can start with CockroachDB for free. Pricing model: Free tier with paid plans.

Is Amazon Aurora Serverless free to use?

Amazon Aurora Serverless does not have a permanent free plan. Pricing model: Pay-as-you-go usage pricing.

Can I self-host CockroachDB or Amazon Aurora Serverless?

CockroachDB can be self-hosted. Deployment options: self-hosted or managed cloud. Amazon Aurora Serverless is offered as a managed service: managed cloud.

What are the main drawbacks of CockroachDB and Amazon Aurora Serverless?

CockroachDB: not fully Postgres compatible; higher latency for simple single-region workloads. Amazon Aurora Serverless: AWS only; pricing can be complex to estimate.