ClickHouse is an open-source, high-performance, column-oriented SQL database for analytical workloads.

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Why is ClickHouse so fast?

Columnar storage

Data is stored in columns rather than rows, allowing for efficient compression and faster analytical queries.

Vectorized query execution

ClickHouse processes data in chunks, utilizing modern CPU architectures more effectively.

Parallel processing

Queries are automatically parallelized across multiple CPU cores and servers.

Data compression

Advanced compression algorithms reduce I/O operations and memory usage.

Optimized data structures

ClickHouse uses specialized data structures tailored for analytical workloads.

Just-in-time compilation

Complex queries are compiled to native machine code for faster execution.

How fast? See the benchmarks.

These features combined allow ClickHouse to process billions of rows and gigabytes of data in seconds, making it ideal for real-time analytics on large datasets.

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Use cases

Real-time analytics

Analyze data as it’s generated for instant insights and rapid decision-making.

Customer-facing analytics

Provide customers with powerful, interactive data insights directly in your product.

Operational analytics

Monitor and optimize business processes in real-time for improved efficiency.

Observability

Gain deep visibility into complex systems for proactive issue detection and resolution.

Business intelligence

Transform raw data into actionable insights to drive strategic business decisions.

Data warehouse

Centralize and store large volumes of data for comprehensive analysis and reporting.

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