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In-depth: ClickHouse vs Redshift

Blog post from PostHog

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1,826
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Summary

ClickHouse and Amazon Redshift are both online analytical processing (OLAP) databases designed to handle large volumes of data efficiently, though they cater to different user needs. ClickHouse, an open-source project originally developed by Yandex, is renowned for its speed and efficiency, achieved through techniques like columnar storage and materialized views, but requires more technical oversight and tuning for specific project needs. On the other hand, Amazon Redshift, a closed-source service tightly integrated with AWS, offers ease of use with features like automatic materialized views and a results cache, making it more suitable for companies seeking a balance between speed and integration within the AWS ecosystem. Despite ClickHouse being faster, especially in scenarios demanding rapid data aggregations, Redshift remains a competitive choice due to its scalability and seamless compatibility with other AWS services. These differences mean that the two databases can be effectively used together, leveraging Redshift's integration capabilities and ClickHouse's speed for specific analytical tasks, often connected by tools like AWS Glue and AWS EventBridge.

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