Learn about the latest ClickHouse tips, tricks and company announcements.

A look at how ClickPy handles over 2 trillion Python package downloads, from ingestion redesign to fixing historical data at scale.

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ClickPy at 2 Trillion rows: Scaling ingestion and fixing the past

A deep dive into how ClickHouse uses data-skipping metadata to turn Top-N queries into a pruning problem, cutting I/O and speeding up queries at scale.

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How ClickHouse makes Top-N queries faster with granule-level data skipping

ClickHouse 25.12 is here! In this post, you will learn about faster top-n queries with data skipping indexes, faster lazy reading with join-style execution model, and more!

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ClickHouse Release 25.12

ClickHouse now supports granule-level pruning for lightweight projections, enabling them to act as true secondary indexes that work together to dramatically speed up multi-filter queries without duplicating full table data.

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ClickHouse projections now behave like true secondary indexes

ClickHouse now streams secondary index evaluation alongside data reads instead of scanning indexes upfront, making index usage incremental and demand-driven, reducing startup latency, unnecessary work, and memory usage.

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Streaming secondary indices: incremental, demand-driven index evaluation

From 30 seconds to 0.5 seconds — the story of how we made ClickHouse fly on in-memory data

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The Journey to Zero-Copy: How chDB Became the Fastest SQL Engine on Pandas DataFrame

Announcing the Bindplane + ClickStack integration. Read how Bindplane helps ClickStack scale to petabyte observability by taking the pain out of running and scaling OpenTelemetry collectors.

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Bindplane + ClickStack: Operating OpenTelemetry collectors at scale

A look back at the later half of 2025 in the world of ClickStack.

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ClickStack: A (half) year in review

Most AI SRE tools sound smart but fall apart in real incidents. Manveer Chawla explains why the problem isn’t the model, it’s the observability foundation, and how fixing that changes everything.

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Your AI SRE needs better observability, not bigger models.

At ClickHouse, we don't like the word "impossible." We believe that with the right tools, everything is a data problem. To prove it, we decided to complete the 2025 Advent of Code unconventionally: using pure ClickHouse SQL.

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Solving the "Impossible" in ClickHouse: Advent of Code 2025

Have a look at some of the most notable demos we built this year, and how they help people feel the speed of ClickHouse through real, hands-on examples.

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A look back at 2025 demo development at ClickHouse

A collection of my favorite technology blogs

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Good technology blogs: a reading list for the holidays

Over 100 functions were added to ClickHouse in 2025. These were some of my favorites.

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New functions you might have missed in 2025

A look back at some of my favorite benchmark-backed ClickHouse blog posts this year, and the lessons they revealed about performance in practice.

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What really matters for performance: lessons from a year of benchmarks

Looking back at Alexey's favorite ClickHouse features of the year.

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Alexey's favorite features of 2025

We’re releasing ClickHouse Agent Skills: a set of open-source, packaged skills encoded with ClickHouse best practices learned by our engineers and community. 

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Introducing ClickHouse Agent Skills

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