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Database & Data Management · head to head

ClickHouse vs CloudWatch

ClickHouse logo

ClickHouse

Database & Data Management

Fast open-source column-oriented database for real-time analytics

From
Free
Rated
-
Full reviewWebsite
CloudWatch logo

CloudWatch

Log Management

AWS Monitoring and Observability

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: ClickHouse limited multi-row atomic transactions and expensive UPDATE/DELETE operations unsuitable for transactional systems; CloudWatch the free tier covers 5 GB of log ingestion and 10 custom metrics a month, after which log ingestion is $0.50 per GB from 5 to 30 GB
  • They diverge on capability: ClickHouse covers Column-oriented Storage, CloudWatch covers Metrics collection.

Where they differ

Only the attributes on which ClickHouse and CloudWatch actually diverge.

Attributes where ClickHouse and CloudWatch differ
AttributeClickHouseCloudWatch
Pricing modelUnknownusage-based
PlatformsLinux, macOS, Windows (via Docker)Web, Api
CategoryDatabase & Data ManagementLog Management
Founded20212006

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

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 ClickHouse

  • Column-oriented Storage
  • Real-time Analytics
  • SQL Support
  • Linear Scalability
  • Data Compression
  • Vectorized Query Execution
  • Approximate Calculations
  • Kafka

Only in CloudWatch

  • Metrics collection
  • Log aggregation
  • Dashboards
  • Alarms and notifications
  • API
  • Webhooks
  • REST
  • Api support

Both cover

  • Web support

What people use each for

The jobs each tool is most often brought in to do.

ClickHouse

  • Business intelligencenot CloudWatch
  • Data warehousingnot CloudWatch
  • Real-time analyticsnot CloudWatch
  • Reportingnot CloudWatch
  • Machine learningnot CloudWatch

CloudWatch

  • Metrics and log collection for AWS workloadsnot ClickHouse
  • Alarming on thresholds across AWS servicesnot ClickHouse
  • Querying logs with Logs Insightsnot ClickHouse
  • Live tailing logs during an incidentnot ClickHouse
  • Distributed tracing alongside X-Raynot ClickHouse

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

ClickHouse

  • Limited multi-row atomic transactions and expensive UPDATE/DELETE operations unsuitable for transactional systems
  • Requires upfront schema design discipline with MergeTree engine choices and sort/partition keys
  • Experimental vector search support, not production-ready for vector operations
  • Different query syntax from standard SQL requiring migration planning
  • Limited JOIN capabilities compared to traditional relational databases
  • Migration complexity with 2-4 weeks estimated for data type mapping and query translation

CloudWatch

  • The free tier covers 5 GB of log ingestion and 10 custom metrics a month, after which log ingestion is $0.50 per GB from 5 to 30 GB
  • Custom metrics are $0.30 each for the first 10,000, so instrumenting broadly gets expensive before volume discounts apply
  • Each custom dashboard beyond the free three is $3 a month
  • Alarms are billed at $0.10 per alarm metric a month, with high-resolution alarms costing more
  • Log storage beyond the free 5 GB is $0.03 per GB per month on top of the ingestion charge

Pricing, plan by plan

ClickHouse

Free

No published plan breakdown. See the ClickHouse review.

CloudWatch

Free
  • FreeFree
    • Metrics collection
    • Log aggregation
    • Dashboards

Which should you pick?

Choose ClickHouse if

  • You need column-oriented storage.
  • You want to start without paying.
  • You work on Linux, macOS, Windows (via Docker).
  • You also want real-time analytics.
ClickHouse review

Choose CloudWatch if

  • You need metrics collection.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want log aggregation.
CloudWatch review

Questions people ask

Is ClickHouse or CloudWatch better?
Neither clearly leads. ClickHouse starts at Free and CloudWatch at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ClickHouse or CloudWatch?
ClickHouse starts at Free and CloudWatch at Free.
Does ClickHouse or CloudWatch run on more platforms?
ClickHouse runs on Linux, macOS, Windows (via Docker). CloudWatch runs on Web, Api.
Can I use ClickHouse for free?
Both have a free tier, so you can try either at no cost before committing.
What is ClickHouse best used for?
ClickHouse is most often used for business intelligence, data warehousing, real-time analytics, reporting. Of those, business intelligence and data warehousing are not what CloudWatch is typically brought in for.
What can ClickHouse do that CloudWatch cannot?
ClickHouse covers Column-oriented Storage, Real-time Analytics, SQL Support, Linear Scalability. CloudWatch covers Metrics collection, Log aggregation, Dashboards, Alarms and notifications. Both handle Web support.

Answered from the vendors’ own pages

ClickHouse: What is ClickHouse best used for?

ClickHouse is optimized for analytical workloads on large datasets. It excels at fast aggregations and queries, being 10-100x faster than PostgreSQL on large aggregations.

Source
ClickHouse: Does ClickHouse support transactions?

ClickHouse has limited transaction support and expensive UPDATE/DELETE operations. It is not suitable for transactional workloads requiring strict ACID guarantees.

Source
ClickHouse: How does ClickHouse compare to PostgreSQL?

ClickHouse is 10-100x faster for analytics but PostgreSQL is better for transactional workloads. Many teams use both: PostgreSQL for writes via MaterializedPostgreSQL replication to ClickHouse for analytics.

Source
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Related pages

More on ClickHouse

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