Uncategorized Archives | ChistaDATA Inc.

ClickHouse Shard Contention Troubleshooting: A Complete Guide

ClickHouse shard contention is one of the most frustrating performance problems a distributed database team can face. When a cluster scales out to dozens or hundreds of nodes, the promise of linear scalability quietly breaks […]

20 Things You Should Not Do With ClickHouse Which Will Destroy ClickHouse Performance

ChistaDATA Inc.

ClickHouse is one of the fastest open source columnar databases for real-time analytics, and it powers observability platforms, product analytics, and large-scale reporting workloads across the industry. Yet raw speed can be deceptive. Many teams […]

7 Powerful ClickHouse Matrices for Troubleshooting Query and IOPS Performance

ChistaDATA Inc.

When a ClickHouse cluster starts feeling sluggish, the hardest part is rarely fixing the problem — it’s finding it. Slow queries, saturated disks, and unpredictable latency all leave fingerprints, but those fingerprints are scattered across […]

ClickHouse Real-Time POS Analytics: Sub-Second Decisioning for QSR Enterprises

ChistaDATA Inc.

If you’ve spent any time working in QSR (Quick Service Restaurant) data infrastructure, you already know the problem. The need for ClickHouse real-time POS analytics has never been more urgent — millions of POS transactions […]

ClickHouse Disaster Recovery Drills: Frequency, Scope, and Reporting

ChistaDATA Inc.

ClickHouse disaster recovery drills are structured tests designed to validate your analytical database’s recovery procedures before a real failure occurs. Running regular ClickHouse disaster recovery drills is how engineering teams build confidence that their backup-restore […]

Troubleshooting Underutilised ClickHouse Indexes

ClickHouse LowCardinality Query Speed: Unlock Blistering Performance

ChistaDATA Inc.

Unlock Blistering Query Speed with ClickHouse LowCardinality: A ChistaDATA Guide ClickHouse is famous for raw speed, but some of its most powerful tools remain under-documented. Among them, the LowCardinality data type is arguably the simplest […]

ClickHouse Data Compression Techniques for Time-series Datasets

Using ClickHouse-Backup for Comprehensive ClickHouse® Backup and Restore Operations

ChistaDATA Inc.

ClickHouse®-Backup Tool ClickHouse® has become a cornerstone technology for organizations handling massive analytical workloads, but with great data comes great responsibility for backup and disaster recovery. The clickhouse® -backup tool emerges as the de facto […]

Data Security and Data Masking in ClickHouse

Shiv Iyer

Comprehensive Guide to Data Security and Data Masking in ClickHouse: Protecting Your Data While Maintaining Performance In today’s data-driven landscape, organizations face the dual challenge of leveraging their data for insights while ensuring robust protection […]

ClickHouse Vector Search: Optimizing the Vector Index

Shiv Iyer

How can I optimise the performance of the ClickHouse vector search index? To optimize vector search performance in ClickHouse, leverage its MergeTree engine capabilities and vector similarity indexes while balancing speed, accuracy, and resource usage. […]

Maintenance Plan for Optimal ClickHouse Infrastructure Operations

Shiv Iyer

ClickHouse Infrastructure Operations Maintenance Plan for Performance, Scalability, and High Availability This runbook outlines a comprehensive maintenance plan for ClickHouse, focusing on performance optimization, scalability enhancement, and high availability assurance. 1. Regular Performance Audits Weekly […]

* 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.

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®.