Blog:Unlock Powerful ClickHouse Insights – ChistaDATA’s Expert Analytics Blog

ClickHouse Observability at Scale: 7 Costly Schema Mistakes We Measured

ClickHouse observability at scale, measured on 20 million OpenTelemetry-style logs: sort keys, shaping at ingest, insert batching, materialized views, high cardinality and tiered log storage.

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ClickHouse High Availability on 26.9: 8 Brutal Failure Drills, Measured

ChistaDATA Inc.

ClickHouse high availability on 26.9, tested: we broke a three-replica cluster with ClickHouse Keeper eight ways and measured what survived, with the SQL and runbooks our ClickHouse support team uses.

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ClickHouse

ClickHouse Performance Observability: 9 Proven Signals We Trust in 26.9

ChistaDATA Inc.

ClickHouse performance observability on ClickHouse 26.9: nine system tables and endpoints, tested SQL, and a real Code 241 incident traced to one function.

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ClickHouse Cloud Cost: How Expensive Queries Become a Very Large Bill, Measured and Fixed

ChistaDATA Inc.

ChistaDATA · ClickHouse Cloud cost engineering · October 2026 ClickHouse Cloud cost is not set by how much data you store. It is set by how your queries are written and how often they run. […]

ClickHouse Query Execution Explained: 4 Proven Stages From INSERT to Distributed JOIN

ChistaDATA Inc.

ChistaDATA · ClickHouse query execution, stage by stage · September 2026 ClickHouse query execution has no magic in it. A statement is parsed and planned, parts are scanned in parallel, partial results are merged, and […]

Advanced ClickHouse Troubleshooting on 26.8 LTS: 9 Proven Techniques for Slow Queries, Stuck Merges and Memory Errors

ChistaDATA Inc.

The ClickHouse troubleshooting method ChistaDATA uses on 26.8 LTS and 26.9: nine techniques, the system tables behind each, the queries we run, and one disk-full incident from our own lab.

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ClickHouse 26.8 LTS feature map: cost-based optimizer, parallel GROUP BY, Parquet lazy materialisation, streaming HTTP API and background queries for real-time analytics

ClickHouse 26.8 LTS: The Advanced Features That Change Real-Time Analytics Performance

ChistaDATA Inc.

ChistaDATA · ClickHouse release engineering · September 2026 ClickHouse 26.8 LTS: The Advanced Features That Change Real-Time Analytics Performance ClickHouse 26.8 LTS shipped on 10 September 2026 with 98 new features, 128 performance optimisations and […]

ClickHouse workshop for CTOs and data architects: three-day agenda covering architecture and fit, measured cost, and migration and people decisions

Real-Time Analytics ClickHouse Workshop for CTOs and Data Architects

ChistaDATA Inc.

A three-day ClickHouse workshop for CTOs and data architects from ChistaDATA University: architecture fit, measured cost, rollup design and migration cutover, with real lab output.

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ChistaDATA Performance

ClickHouse Performance Audit: 8 Best Tips for 26.8 LTS

ChistaDATA Inc.

ClickHouse performance audit tips for 26.8 LTS with real lab output: rank query shapes in system.query_log, measure cold past the query condition cache, read EXPLAIN ANALYZE and EXPLAIN WHATIF, and audit codecs per block.

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Real-Time Payments Analytics on ClickHouse: 6 Proven Layers for Southeast Asia

ChistaDATA Inc.

A reference model for real-time payments analytics on ClickHouse with the Apache stack (Kafka, Flink, Iceberg, Spark, Airflow, Superset) for a high-volume Southeast Asian mobile payment platform: schema, ingestion, serving, residency and operations.

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