Databases · head to head
Apache Flink vs Cockroach Labs
The short version
- Each has a real cost: Apache Flink genuinely difficult: event time, watermarks and state backends are a real conceptual load before anything works; Cockroach Labs basic and Standard tiers limited to AWS and GCP (select regions only)
- They diverge on capability: Apache Flink covers Event-time processing, Cockroach Labs covers Distributed SQL.
Where they differ
Only the attributes on which Apache Flink and Cockroach Labs actually diverge.
| Attribute | Apache Flink | Cockroach Labs |
|---|---|---|
| Pricing model | Open source, no licence fee; managed services billed separately | freemium |
| Platforms | Linux, Kubernetes, Docker, Self-hosted | AWS, GCP, Azure |
| Founded | Unknown | 2015 |
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Databases).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Apache Flink
- Event-time processing
- Exactly-once state
- Batch and stream
- SQL interface
Only in Cockroach Labs
- Distributed SQL
- Automatic Sharding
- Multi-region Replication
- Geo-partitioning
- ACID Transactions
- Horizontal Scaling
- Survivability
- PostgreSQL Compatibility
What people use each for
The jobs each tool is most often brought in to do.
Apache Flink
- Real-time aggregations and dashboards computed over an event streamnot Cockroach Labs
- Fraud and anomaly detection where patterns span a time windownot Cockroach Labs
- Joining two live streams where events arrive out of ordernot Cockroach Labs
Cockroach Labs
- Distributed SQL database for scalable applicationsnot Apache Flink
- Multi-region deployment and failovernot Apache Flink
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Apache Flink
- Genuinely difficult: event time, watermarks and state backends are a real conceptual load before anything works
- Operationally heavy — job managers, task managers, checkpoint storage and state size are all yours to run and tune
- State grows with the workload, and large state changes recovery time and cost significantly
- Overkill where a scheduled batch job would answer the same question
Cockroach Labs
- Basic and Standard tiers limited to AWS and GCP (select regions only)
- Azure support restricted to Advanced tier only
- Basic tier limited to 50 million RUs and 10 GiB storage per month
- Advanced tier starts at $0.60/hour for 4 vCPUs minimum
- 3 TiB maximum storage on Basic and Standard tiers, 10 TiB per node on Advanced
Pricing, plan by plan
Apache Flink
Free- Apache FlinkFree
- Full functionality
- Self-hosted
- No usage limits
Cockroach Labs
FreeNo published plan breakdown. See the Cockroach Labs review.
Which should you pick?
Choose Apache Flink if
- You need event-time processing.
- You want to start without paying.
- You work on Linux, Kubernetes, Docker, Self-hosted.
- You also want exactly-once state.
Choose Cockroach Labs if
- You need distributed sql.
- You want to start without paying.
- You work on AWS, GCP, Azure.
- You also want automatic sharding.
Questions people ask
- Is Apache Flink or Cockroach Labs better?
- Neither clearly leads. Apache Flink starts at Free and Cockroach Labs at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Apache Flink or Cockroach Labs?
- Apache Flink starts at Free and Cockroach Labs at Free.
- Does Apache Flink or Cockroach Labs run on more platforms?
- Apache Flink runs on Linux, Kubernetes, Docker, Self-hosted. Cockroach Labs runs on AWS, GCP, Azure.
- Can I use Apache Flink for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Apache Flink best used for?
- Apache Flink is most often used for real-time aggregations and dashboards computed over an event stream, fraud and anomaly detection where patterns span a time window, joining two live streams where events arrive out of order. Of those, real-time aggregations and dashboards computed over an event stream and fraud and anomaly detection where patterns span a time window are not what Cockroach Labs is typically brought in for.
- What can Apache Flink do that Cockroach Labs cannot?
- Apache Flink covers Event-time processing, Exactly-once state, Batch and stream, SQL interface. Cockroach Labs covers Distributed SQL, Automatic Sharding, Multi-region Replication, Geo-partitioning.
Answered from the vendors’ own pages
Apache Flink: Is Apache Flink free?
Yes, open source under the Apache Software Foundation. Managed services such as Amazon Managed Service for Apache Flink are billed separately.
Cockroach Labs: What does the free Basic tier include?
The Basic tier is free and includes 50 million RUs and 10 GiB storage per month, with a maximum compute of 30K RU/sec. No credit card is required to start.
SourceApache Flink: Flink or Kafka?
They are complementary rather than alternatives. Kafka moves and stores events; Flink computes over them with windowing, joins and durable state.
Cockroach Labs: How much do the paid tiers cost?
Standard tier starts at $0.18 per hour for 2 vCPUs, and Advanced tier starts at $0.60 per hour for 4 vCPUs. Both tiers support additional resources with higher costs for increased compute and storage.
SourceApache Flink: What is event-time processing?
Computing based on when an event actually occurred rather than when it arrived. It is what makes results correct when data is late or out of order, and it is the main reason Flink is harder than it looks.
Cockroach Labs: What are the storage limits for each tier?
Basic plan supports up to 3 TiB storage, Standard tier up to 3 TiB, and Advanced tier up to 10 TiB per node with unlimited total storage.
SourceCockroach Labs: Can I get trial credits before paying?
Yes, new users can try CockroachDB free with $400 in credits. The Basic and Standard plans do not require a credit card to start.
SourceCockroach Labs: Do legacy contracts have different pricing?
Customers with annual or multi-year contracts entered before December 1, 2024 can view legacy pricing terms on a separate page, which apply until their contract renewal date.
SourceRelated pages
More on Apache Flink
More on Cockroach Labs
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