Is your data safe with Claude Dashboards?
What Claude sees, where the data goes, and how a semantic layer on ClickHouse limits it. As of October 2026. With Claude Dashboards (beta since Octo…
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Manage ClickHouse® Without SSH with CH-Ops Pro
You need to restart ClickHouse®. So you open a terminal. SSH into the server. Check whether the service is running. Look through the logs. Maybe edi…
Как использовать Neo4j в data engineering проекте: практический пример с Kafka, ClickHouse и Airflow
Когда говорят о Neo4j, чаще всего вспоминают social networks, fraud detection, recommendation systems или knowledge graphs. Но графовая база может б…
Три ИИ-направления, за которыми стоит следить в 2027 году
Большие языковые модели остаются главной темой ИИ-рынка. К OpenAI, Anthropic и Google добавляются китайские Moonshot AI и DeepSeek, а…
I Built an Open-Source, Self-Hosted Alternative to PostHog on ClickHouse
Per-event pricing can make analytics costs rise with traffic. I built an alternative: SensorFlow — an open-source, self-hosted event analytics stack…
Never create 1-row ClickHouse parts again: The built-in Buffer Manager.
Day 03 of the WClickHouse Open-Source Engineering Series. You don't need a Redis cluster just to protect ClickHouse from single-event streaming writ…
ClickHouse 26.8 LTS: 57 Breaking Changes Since 26.3
If you run ClickHouse in production, you're probably on 26.3 LTS. And now 26.8 LTS has been announced, which means the LTS-to-LTS upgrade conversati…
Deploying SigNoz in 2026: A Survival Guide to ClickHouse v25+ and OTel Gotchas
Hello, fellow developers! 🧑💻 When building a modern B2B SaaS ecosystem, bulletproof observability isn't a luxury—it's a strict survival requirement…
От struct к компиляции под схему: ускоряем RowBinary-декодер на Python
Я автор aiochlite — асинхронного клиента ClickHouse на aiohttp . Раньше мой декодер RowBinary читал каждое числовое поле отдельно. Если брать 200 ты…
Как за 5 недель построить рекомендательную систему в TravelTech: Kafka и MongoDB вместо Feature Store
Привет! Меня зовут Кристина, я MLOps-инженер в Туту. Занимаюсь тем, что помогаю рекомендательным системам добраться до прода со всеми компромиссами,…
Architecting a Solana Data Pipeline: Economics & System Design
Architecting a Solana Data Pipeline: Economics & System Design If you have ever tried to track every single swap across Raydium, Orca, and Jupit…
[Перевод] Предел PostgreSQL: как кеш AI-тестов вырос до миллиарда записей и переехал на ClickHouse
От проблем PostgreSQL к скорости ClickHouse. Рассказываем, как переработали архитектуру кеширования для AI-тестов, чтобы выполнять более 2 млн запро…
Day 96/100 – Standard SQL Time Functions in ClickHouse® 26.3: Better ANSI SQL Compatibility
Introduction One of the key goals of recent ClickHouse® releases has been improving compatibility with the ANSI SQL standard. While ClickHouse has a…
Can ClickHouse Replace a Vector Database?
Vector databases like Pinecone, Weaviate, and Milvus exist for one job: store embeddings and find the nearest ones to a query vector, fast. ClickHou…
Day 88 - Upgrading to ClickHouse® 26.3 LTS: A Step-by-Step Safe Guide
Introduction Upgrading a database is much more than installing a newer version. It requires careful planning to preserve data integrity, maintain ap…
Day 84: EXPLAIN `pretty=1` and `compact=1` in ClickHouse® 26.3
When a ClickHouse® query runs slowly, the root cause is not always insufficient hardware or an inefficient schema. In many cases, the issue lies in…
Day 71 - Advanced Partitioning Strategies for Petabyte-Scale Tables
As datasets grow into the petabyte range, choosing the right partitioning strategy becomes one of the most important architectural decisions in Clic…
Postgres vs ClickHouse? I use both. 4 tricks from the split.
TL;DR. My uptime monitor keeps config and incidents in Postgres and check results in ClickHouse. The split is one rule: does a row ever change? Conf…
Day 64: ClickHouse® Query Cache – Configuration, Best Practices, and Common Pitfalls
Introduction Analytical platforms often execute the same SQL queries repeatedly. Business Intelligence (BI) dashboards refresh every few minutes, sc…
Day 63: Advanced ClickHouse® Dictionaries – Integrating External Data Sources for Faster Lookups
Introduction Modern analytics platforms rarely store all business data in one place. Customer information may reside in PostgreSQL, product catalogs…
Пока все хоронили пайплайны, ClickHouse достраивал слои
«Отдельные базы больше не нужны», «конец пайплайнов» - каждую неделю кто-то крупный со сцены хоронит то, что ты вчера поставил в прод. ClickHouse по…
Day 57: Internals of ClickHouse® Data Parts and Merges – A Complete Guide
Introduction One of the reasons ClickHouse® can handle massive analytical workloads with exceptional speed is its storage architecture. Unlike tradi…
Day 53: ClickHouse® Data Sampling Explained – Query Billions of Rows Faster
ClickHouse® Data Sampling: Querying Billions of Rows Fast Day 53 of #100DaysOfClickHouse Modern analytics platforms routinely manage billions—or eve…
Day 50 - How to Migrate Data from MySQL to ClickHouse®: A Step-by-Step Guide
Introduction As applications grow, traditional relational databases such as MySQL may struggle with analytical workloads involving millions of recor…
Шесть недель с agentic AI против фрода в adversarial-системе
Я слишком рано понёс первые результаты в наш продукт. Тогда это выглядело логично: мы прикрутили агентный ИИ к анализу логов и поведения пользовател…
When to denormalize, when to join: A ClickHouse guide (2026)
Denormalization has been the standard approach to analytical data modeling for good reason. Moving joins, lookups, and business rules out of query t…
Day 48 - Sharding Strategies in ClickHouse®
As data volumes grow from gigabytes to terabytes and eventually petabytes, a single database server often becomes a bottleneck. Storage limitations,…
Day 44 – Exploring ClickHouse® System Tables for Troubleshooting
Introduction ClickHouse® provides a rich collection of built-in system tables that expose valuable information about the server's internal operation…
Best real-time analytics database for star schema and fast joins (2026 guide)
Modern OLAP databases like ClickHouse now handle star schemas and complex cross-table joins at massive scale. That gives data engineering teams a re…
Day 41: Monitoring ClickHouse® Performance Metrics
Monitoring ClickHouse® Performance Metrics Introduction Monitoring is a fundamental part of operating a healthy ClickHouse® deployment. As databases…