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Blog

Sharing knowledge and lessons learnt based on my ClickHouse engagements.

Blog post cover image: Deploying Agentic Analytics In Financial Services
AIAgents
2026-05-04 6 min read

Deploying Agentic Analytics In Financial Services

Agentic analytics is changing how financial services firms explore data — moving beyond text-to-SQL into scenario modelling, strategy development and real partnership with the LLM. Here's why ClickHouse is the right database to build on.

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Blog post cover image: Building Real-Time OHLC Candlestick Charts with ClickHouse
ClickHouseFinance
2026-02-17 10 min read

Building Real-Time OHLC Candlestick Charts with ClickHouse

How to implement OHLC candlestick charts in ClickHouse using AggregatingMergeTree and materialized views for real-time, multi-resolution financial data at any time granularity.

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Blog post cover image: The Agentic Data Stack
AIAgents
2026-02-13 3 min read

The Agentic Data Stack

See how the evolution of text-to-SQL and agentic workflows has led to the ClickHouse agentic data stack - combining ClickHouse, MCP servers, and LibreChat for powerful generative business intelligence.

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Blog post cover image: ClickHouse Is The Best Data Platform For Building AI Initiatives
AIArchitecture
2026-01-29 2 min read

ClickHouse Is The Best Data Platform For Building AI Initiatives

At a time when everyone is choosing their architecture for AI, many data platforms are too expensive and too slow to bet on. Here's why ClickHouse is different.

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Blog post cover image: Introducing Query Dog, A Tool For Working With The ClickHouse Query Log
GeneralPerformance
2025-12-10 4 min read

Introducing Query Dog, A Tool For Working With The ClickHouse Query Log

Introducing Query Dog, an open source tool for analysing and optimising ClickHouse query performance through visualisation of the query log and system tables.

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Blog post cover image: The Risk Of Misusing ClickHouse Partitions
GeneralPerformance
2025-12-10 8 min read

The Risk Of Misusing ClickHouse Partitions

Learn why ClickHouse partitions can hurt rather than help performance, and what alternatives to consider.

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Blog post cover image: Why I'm Not Convinced About Data Lakehouse Architecture
ArchitectureData Warehouse
2025-12-05 3 min read

Why I'm Not Convinced About Data Lakehouse Architecture

After building 3 data lakehouses, I'm skeptical about this architecture. Here's what I learned from these projects.

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Blog post cover image: Comparing The TCO Of ClickHouse Cloud vs Open Source
General
2025-07-24 8 min read

Comparing The TCO Of ClickHouse Cloud vs Open Source

Exploring the TCO when deciding between ClickHouse Cloud vs Open Source.

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Blog post cover image: Using Gemini and Claude For SQL Analytics - A Bake Off
General
2025-07-08 16 min read

Using Gemini and Claude For SQL Analytics - A Bake Off

A bake off of Claude and Gemini in order to test their SQL performance against a ClickHouse database.

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Blog post cover image: Using ClickHouse Cloud For Real Time Sports Analytics
General
2025-07-03 15 min read

Using ClickHouse Cloud For Real Time Sports Analytics

A demonstration of a real time sports analytics use case powered by ClickHouse.

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Blog post cover image: Simplifying Your Data Stack With ClickHouse Cloud
General
2025-06-12 11 min read

Simplifying Your Data Stack With ClickHouse Cloud

How ClickHouse can simplify your data estate and technology stack.

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Blog post cover image: Analysing FIX Data With ClickHouse
General
2025-06-11 20 min read

Analysing FIX Data With ClickHouse

Using ClickHouse String and Array Processing functions to analyse FIX Protocol data.

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Blog post cover image: Reliably Replicating Data Between PostgreSQL and ClickHouse Part 3 - Demo
General
2025-02-07 8 min read

Reliably Replicating Data Between PostgreSQL and ClickHouse Part 3 - Demo

A video walkthrough of PeerDB open source and ClickPipes for Postgres CDC.

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Blog post cover image: Reliably Replicating Data Between PostgreSQL and ClickHouse Part 2 - ClickPipes For PostgreSQL CDC
General
2025-01-24 9 min read

Reliably Replicating Data Between PostgreSQL and ClickHouse Part 2 - ClickPipes For PostgreSQL CDC

Using ClickPipes to reliably replicate data from PostgreSQL to ClickHouse.

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Blog post cover image: Reliably Replicating Data Between PostgreSQL and ClickHouse Part 1 - PeerDB Open Source
General
2025-01-23 16 min read

Reliably Replicating Data Between PostgreSQL and ClickHouse Part 1 - PeerDB Open Source

Using PeerDB open source to reliably replicate data from PostgreSQL to ClickHouse.

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Blog post cover image: Time Series Classification Using ClickHouse Machine Learning Functions
General
2024-09-05 7 min read

Time Series Classification Using ClickHouse Machine Learning Functions

An example of how we can classify time series by leveraging machine learning functions baked into ClickHouse.

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Blog post cover image: Optimising Vehicle Routing Using ClickHouse Cloud And Google OR-Tools
General
2024-08-20 20 min read

Optimising Vehicle Routing Using ClickHouse Cloud And Google OR-Tools

Operational Analytics is about using real time data to make better day to day decisions

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Blog post cover image: Building A Recommendation System Using ClickHouse and SQL
Tools
2024-07-26 12 min read

Building A Recommendation System Using ClickHouse and SQL

In recent blog posts we demonstrated how data science techniques such as forecasting and anomaly detection can be implemented entirely within ClickHouse using only SQL.

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Blog post cover image: Linear Regression Using Clickhouse Machine Learning Functions
General
2024-07-11 8 min read

Linear Regression Using Clickhouse Machine Learning Functions

Using functions integrated into ClickHouse to implement a linear regression.

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Blog post cover image: Load And Performance Testing Your ClickHouse Deployment With K6
General
2024-06-10 3 min read

Load And Performance Testing Your ClickHouse Deployment With K6

We’ve recently used K6 to directly load test a ClickHouse environment and found it to be very powerful and expressive.

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Blog post cover image: Comparing ClickHouse Cloud With Snowflake Pricing
General
2024-05-23 18 min read

Comparing ClickHouse Cloud With Snowflake Pricing

In this article we analyse the differences in pricing between Snowflake and ClickHouse Cloud

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Blog post cover image: Anomaly Detection Using ClickHouse
General
2024-04-22 5 min read

Anomaly Detection Using ClickHouse

This article is part of a series where we look at doing data science work within ClickHouse

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Blog post cover image: Using Cube And ClickHouse To Power Data Applications In Financial Services
General
2024-03-30 9 min read

Using Cube And ClickHouse To Power Data Applications In Financial Services

Last week we delivered a webinar with the Cube team, covering why we believe that Cube is an excellent fit for building data-oriented applications.

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Blog post cover image: Combining ClickHouse Cloud And AWS SageMaker For Machine Learning
General
2024-03-15 10 min read

Combining ClickHouse Cloud And AWS SageMaker For Machine Learning

Machine learning professionals can learn how to combine ClickHouse Cloud and AWS SageMaker for powerful data analytics and predictive modeling. This comprehensive guide demonstrates end-to-end workflow including data preparation, feature engineering, model training, deployment, and real-time inference, with practical insights into traffic volume forecasting using CatBoost algorithm.

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Blog post cover image: Calculating Value At Risk For An Equities Portfolio Using ClickHouse
General
2024-03-08 16 min read

Calculating Value At Risk For An Equities Portfolio Using ClickHouse

ClickHouse is increasingly being used by capital markets firms such as investment banks, hedge funds and trading technology vendors.

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Blog post cover image: Why Cloud Data Warehouses Are Too Expensive For Emerging Data Requirements
General
2024-02-14 8 min read

Why Cloud Data Warehouses Are Too Expensive For Emerging Data Requirements

The cost model behind many cloud data warehouses is not defined for low latency big data workloads.

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Blog post cover image: Solving A Workforce Optimisation Problem With ClickHouse Cloud and Google OR-Tools
Tools
2024-02-07 11 min read

Solving A Workforce Optimisation Problem With ClickHouse Cloud and Google OR-Tools

As a professional services firm, we have a workforce allocation or optimisation problem. In this article we demonstrate how to solve this problem using ClickHouse Cloud and Google OR-Tools.

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Blog post cover image: Using ClickHouse Cloud As A Real Time Data Warehouse
Tools
2024-01-28 5 min read

Using ClickHouse Cloud As A Real Time Data Warehouse

When you think of data warehouse technology, you may think of legacy on premise offerings such as Oracle or Terradata, or more modern cloud based platforms such as Snowflake, AWS Redshift or BigQuery.

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Blog post cover image: Using ClickHouse Cloud To Power ML Feature Stores - A Fraud Detection Example
Machine Learning
2024-01-22 22 min read

Using ClickHouse Cloud To Power ML Feature Stores - A Fraud Detection Example

A feature store is a place to store the cleaned and prepared input data that we use to train a machine learning model

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Blog post cover image: How ClickHouse Cloud Simplifies Your Data Stack
General
2024-01-17 4 min read

How ClickHouse Cloud Simplifies Your Data Stack

How ClickHouse cloud has the potential to take complexity out of your data stack.

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Blog post cover image: Why ClickHouse Cloud Disrupts The Data Warehouse Industry
General
2024-01-15 3 min read

Why ClickHouse Cloud Disrupts The Data Warehouse Industry

In recent years, when I have been asked by businesses which data warehouse to choose, there were 3 candidates at the top of the list

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Blog post cover image: Combining Large Language Models With Real Time Data
GeneralAI
2024-01-09 4 min read

Combining Large Language Models With Real Time Data

Learn how large language models can be used to interrogate a real time analytical database like ClickHouse Cloud.

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Blog post cover image: ClickHouse Cloud And Hex Are A Great Stack For Analytics And Data Science
General
2023-12-08 5 min read

ClickHouse Cloud And Hex Are A Great Stack For Analytics And Data Science

Two of our favourite tools which combine to be a brilliant serverless stack for data and analytics.

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Blog post cover image: Forecasting Using ClickHouse Machine Learning Functions
General
2023-10-15 11 min read

Forecasting Using ClickHouse Machine Learning Functions

This article is part of a series where we look at doing data science work within ClickHouse

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Blog post cover image: How We Built A Crypto Analytics Platform Based On ClickHouse
ClickHouse
2023-10-12 6 min read

How We Built A Crypto Analytics Platform Based On ClickHouse

A walkthrough of our architecture for DeFi analytics platform.

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Blog post cover image: Combining dbt And ClickHouse
ClickHouse
2023-06-17 4 min read

Combining dbt And ClickHouse

Learn how to effectively combine dbt and ClickHouse for data transformation and analytics. Discover best practices, use cases, and implementation strategies for leveraging dbt's transformation capabilities with ClickHouse's high-performance database.

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Blog post cover image: Why We Went "All In" On ClickHouse
ClickHouse
2023-06-01 4 min read

Why We Went "All In" On ClickHouse

ClickHouse is a uniquely differentiated database which we decided to take a big bet on.

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Blog post cover image: Controlling Memory With ClickHouse Group Bys
GeneralPerformance
2020-06-22 5 min read

Controlling Memory With ClickHouse Group Bys

Learn how to control memory usage when performing GROUP BY queries on large datasets in ClickHouse.

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