ClickHouse

ClickHouse is a columnar DBMS for Online Analytical Processing (OLAP). It is famous for allowing real-time generation of analytical reports using SQL queries on petabytes of data.

When to Use

• Real-time Analytics: User-facing dashboards (Google Analytics style).
• Log Management: A cheaper, faster alternative to Elasticsearch/Splunk for logs (Observability).
• Huge Throughput: Ingesting millions of rows per second.

Quick Start