Apache Cassandra vs. ClickHouse Comparison


Apache Cassandra Apache Software Foundation	ClickHouse	+	+
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About The Apache Cassandra database is the right choice when you need scalability and high availability without compromising performance. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure make it the perfect platform for mission-critical data. Cassandra's support for replicating across multiple datacenters is best-in-class, providing lower latency for your users and the peace of mind of knowing that you can survive regional outages.	About ClickHouse is a fast open-source OLAP database management system. It is column-oriented and allows to generate analytical reports using SQL queries in real-time. ClickHouse's performance exceeds comparable column-oriented database management systems currently available on the market. It processes hundreds of millions to more than a billion rows and tens of gigabytes of data per single server per second. ClickHouse uses all available hardware to its full potential to process each query as fast as possible. Peak processing performance for a single query stands at more than 2 terabytes per second (after decompression, only used columns). In distributed setup reads are automatically balanced among healthy replicas to avoid increasing latency. ClickHouse supports multi-master asynchronous replication and can be deployed across multiple datacenters. All nodes are equal, which allows avoiding having single points of failure.
Platforms Supported Windows Supported Mac Supported Linux Not Supported Cloud Not Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Application Developers searching for a powerful data management platform	Audience Companies of all sizes
Support Phone Support Not Supported 24/7 Live Support Not Supported Online Not Supported	Support Phone Support Not Supported 24/7 Live Support Not Supported Online Not Supported
API Offers API Not Supported	API Offers API Not Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing No information available. Free Version Supported Free Trial Not Supported	Pricing No information available. Free Version Supported Free Trial Not Supported
Reviews/Ratings Overall 5.0 / 5 ease 5.0 / 5 features 4.0 / 5 design 5.0 / 5 support 5.0 / 5 Read all reviews	Reviews/Ratings Overall 5.0 / 5 ease 3.0 / 5 features 4.0 / 5 design 5.0 / 5 support 5.0 / 5 Read all reviews
Pros & Cons from Real Users Pros Cassandra Query Language is easy to learn Schema-less Horizontal scalability High availability - fully distributed database Great write performance Cons Ad hoc queries do not perform well No aggregations queries available	Pros & Cons from Real Users Pros ClickHouse is really really fast. I can say that it is THE fastest I've came across. It has lots of native integration options S3, Kafka, SQLite, PostgreSQL and so on. Its SQL capabilities are top notch. And it is 100% free! Cons - Updates and deletes are eventual. - Hard to setup a cluster. - Does not have ACID.
Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Not Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information Apache Software Foundation Founded: 1999 United States cassandra.apache.org/_/index.html	Company Information ClickHouse Founded: 2021 United States clickhouse.com
Alternatives Couchbase	Alternatives StarTree
Amazon DynamoDB Amazon	Amazon Redshift Amazon
MongoDB	Apache Druid Druid
DataStax	Yandex Managed Service for ClickHouse Yandex
Google Cloud Bigtable Google View All	CelerData Cloud CelerData View All
Categories Columnar Databases Supported Database Supported Database Management Systems (DBMS) Supported Distributed Databases Supported Graph Databases Supported Key-Value Databases Supported NoSQL Database Supported	Categories Columnar Databases Supported Database Supported Database Management Systems (DBMS) Supported Distributed Databases Supported OLAP Databases Supported Query Engines Supported
Database Features Backup and Recovery Not Supported Creation / Development Not Supported Data Migration Not Supported Data Replication Supported Data Search Not Supported Data Security Supported Database Conversion Not Supported Mobile Access Supported Monitoring Not Supported NOSQL Supported Performance Analysis Not Supported Queries Supported Relational Interface Not Supported Virtualization Not Supported Show More Features NoSQL Database Features Auto-sharding Not Supported Automatic Database Replication Not Supported Data Model Flexibility Not Supported Deployment Flexibility Supported Dynamic Schemas Supported Integrated Caching Not Supported Multi-Model Not Supported Performance Management Not Supported Security Management Not Supported
Integrations AtomicJar Supported Bytebase Supported DataGrip Supported DbGate Supported DbVisualizer Supported IBM watsonx.data Supported Kestra Supported Langflow Supported Nucleon Database Master Supported OpenMetadata Supported Peaka Supported PopSQL Supported Sematext Cloud Supported CitraTest APM Supported Grouparoo Not Supported Instaclustr Supported JProfiler Supported Prisme Analytics Not Supported SigNoz Not Supported Show More Integrations View All 164 Integrations	Integrations AtomicJar Supported Bytebase Supported DataGrip Supported DbGate Supported DbVisualizer Supported IBM watsonx.data Supported Kestra Supported Langflow Supported Nucleon Database Master Supported OpenMetadata Supported Peaka Supported PopSQL Supported Sematext Cloud Supported CitraTest APM Not Supported Grouparoo Supported Instaclustr Not Supported JProfiler Not Supported Prisme Analytics Supported SigNoz Supported Show More Integrations View All 118 Integrations
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