ChistaDATA Inc.

Enterprise-class 24*7 ClickHouse Consultative Support and Managed Services

  • ChistaDATA
    • ClickHouse®
    • ClickHouse MergeTree
    • Why is ClickHouse So Fast
    • Columnar Stores
    • Vectorized Query
    • For CTOs
  • Engineering
    • Real-Time Analytics
    • Break Fix Engineering
    • Data Foundation
    • Data Archiving
    • Cloud Native ClickHouse
    • ClickHouse Consulting
      • Performance Audit
        • Pre- Engagement Questionnaire
    • ClickHouse Strategy
    • Online Ticketing System
  • Support
    • ClickHouse Migration
    • ClickHouse Audit
    • Data Warehousing Support
    • Data Analytics
    • Gen AI
    • Online Ticketing System
  • ClickHouse Managed Services
    • ClickHouse DBA
    • ClickHouse Performance
    • Data Strategy
    • ClickHouse Analytics
    • Data Archiving
    • DBaaS Optimization
    • Data SRE
    • Online Ticketing System
  • Blog
    • ChistaDATA Blog
  • University
  • Careers
  • Contact
  • Twitter
  • Facebook
  • LinkedIn
    • Shiv Iyer
  • GitHub
    • @ShivIyer
HomeAuthorsChistaDATA Inc.

Articles by ChistaDATA Inc.

About ChistaDATA Inc.
ChistaDATA is a full-stack ClickHouse infrastructure operations company delivering consulting, 24×7 enterprise support, and managed services, with core expertise in performance engineering, scalability, and data SRE. Headquartered in California, our consulting and support engineering teams operate from San Francisco, Vancouver, London, Germany, Russia, Ukraine, Australia, Singapore, and India, providing follow-the-sun, enterprise-class consultative support around the clock. We work closely with more than 200 customers globally, including some of the largest planet-scale internet properties, financial-services institutions, consumer brands, and industrial IoT programmes.
Website Facebook Twitter LinkedIn
ClickHouse Performance Observability
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.

[…]

ClickHouse Cloud Cost
ClickHouse

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
ClickHouse

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
ClickHouse

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.

[…]

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

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
ChistaDATA

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.

[…]

ClickHouse performance audit order on 26.8 LTS: rank the workload in system.query_log, measure cold, EXPLAIN ANALYZE, pruning and indexes, storage shape, background work, pipeline stalls, then settings
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.

[…]

Real-Time Payments Analytics
ClickHouse

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.

[…]

ClickHouse Performance Settings
ClickHouse

ClickHouse Performance Settings in 26.8 LTS: 14 Proven Changes

ChistaDATA Inc.
The ClickHouse performance settings that changed between 26.3 LTS and 26.8 LTS: what each default does to ingest, aggregation, joins and distributed execution, how to measure it, and the rollout method we use.

[…]

ClickHouse Troubleshooting Techniques
ChistaDATA University

ClickHouse Troubleshooting Techniques: 8 Proven Drills We Teach

ChistaDATA Inc.
The ClickHouse troubleshooting techniques taught in CHT-400 at ChistaDATA University: a scope, prove, fix method and the diagnostic queries for eight production incidents, from too many parts to distributed timeouts.

[…]

Posts pagination

1 2 … 27 »

ChistaDATA is committed to open source software and building high performance ColumnStores

In the spirit of freedom, independence and innovation. ChistaDATA Corporation is not affiliated with ClickHouse Corporation 

Tell us how we can help!

Loading

Search ChistaDATA Website

★READ THIS WARNING★

* Everything changes over time – Our blogs/posts and comments changes over time, That’s how it should be! Whatever we comment from ChistaDATA Inc. Teams (including Shiv Iyer) and other stakeholders or guest bloggers posted here are never permanent, These things worked for us. But, there is no guarantee they will work for you too, When using the recommendations from ChistaDATA or MinervaDB or MinervaSQL or any other online resources / Google,  You must test the advice before applying them to your production systems, and always invest for a robust Database DR solution, Thank you for understanding. 

Recent Posts from ChistaDATA

  • ClickHouse Performance Observability: 9 Proven Signals We Trust in 26.9
  • ClickHouse Cloud Cost: How Expensive Queries Become a Very Large Bill, Measured and Fixed
  • ClickHouse Query Execution Explained: 4 Proven Stages From INSERT to Distributed JOIN
  • Advanced ClickHouse Troubleshooting on 26.8 LTS: 9 Proven Techniques for Slow Queries, Stuck Merges and Memory Errors
  • ClickHouse 26.8 LTS: The Advanced Features That Change Real-Time Analytics Performance

☎ TOLL FREE PHONE (24*7)

(844)395-5717

🚩 ChistaDATA Inc. FAX

+1 (209) 314-2364

CORPORATE ADDRESS: CALIFORNIA

ChistaDATA Inc.
440 N BARRANCA AVE #9718 COVINA,
CA 91723
════════════════════════════════
Email: info@chistadata.com

CORPORATE ADDRESS: NEW CASTLE, DELAWARE

ChistaDATA Inc.,
256 Chapman Road STE 105-4,
Newark, New Castle 19702,
Delaware
════════════════════════════════
Email: info@chistadata.com

CORPORATE ADDRESS: DELAWARE

ChistaDATA Inc.,
PO Box 2093 PHILADELPHIA PIKE #3339
CLAYMONT, DE 19703
════════════════════════════════
Email: info@chistadata.com

HOW CAN WE HELP?

We are committed to building Optimal, Scalable, Highly Available, Reliable, Fault-Tolerant and Secured Database Infrastructure Operations for WebScale to our customers globally

CHISTADATA IS COMMITTED TO OPEN SOURCE SOFTWARE AND BUILDING HIGH PERFORMANCE COLUMNSTORES

In the spirit of freedom, independence and innovation. ChistaDATA Corporation is not affiliated with ClickHouse Corporation 

ChistaDATA Inc. Knowledge base is licensed under the Apache License, Version 2.0 (the “License”)

Copyright 2022 ChistaDATA Inc

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

PostgreSQL is a registered trademark of the PostgreSQL Community Association. ClickHouse is a registered trademark of ClickHouse, Inc. MongoDB is a registered trademark of MongoDB, Inc. Couchbase is a registered trademark of Couchbase, Inc. Redis is a registered trademark of Redis Ltd. Apache Cassandra is a registered trademark of the Apache Software Foundation. Milvus is a registered trademark of Zilliz. MinIO is a registered trademark of MinIO, Inc. Amazon Redshift and Amazon Aurora are registered trademarks of [Amazon.com](http://amazon.com/), Inc. Google Cloud is a registered trademark of Google LLC. Snowflake is a registered trademark of Snowflake Inc. Databricks is a registered trademark of Databricks, Inc. MySQL and InnoDB are registered trademarks of Oracle Corporation. MariaDB is a trademark of MariaDB Corporation Ab. All other trademarks are the property of their respective owners. Any other product or company names mentioned may be trademarks or trade names of their respective owners. Copyright © 2010–2026. All Rights Reserved by ChistaDATA®.