Explore ClickHouse Insights on ChistaDATA's Blog

Runbook for Migration from Amazon Redshift to ChistaDATA Cloud for ClickHouse: Part 1

Introduction Amazon Redshift is a proprietary cloud data warehouse offered by AWS. It is based on PostgreSQL but with modifications. Amazon RedShift is an OLAP data store, whereas PostgreSQL is an OLTP database system. […]

ClickHouse Summer 2023 Release – Version 23.7

ChistaDATA Inc.

Introduction Each new release includes new features, improvements, and numerous bug fixes, and the ChistaDATA team is always on top of the latest releases. On 27th July 2023, ClickHouse version 23.7 (July 2023) was released, […]

🚀 Exciting Plans for MinervaDB Inc. and ChistaDATA Inc.! 🌟

Shiv Iyer

Empowering Data Management: The Vision for MinervaDB and ChistaDATA As the founder of MinervaDB Inc. and ChistaDATA Inc., I am thrilled to share our vision for the next two years. Our companies have been established […]

Temporary Tables & Parameterized Views In ClickHouse

ClickHouse’s Solutions: Alternatives to Table-Valued Parameters for Dynamic Data Handling

ChistaDATA Inc.

Introduction Have you ever wondered how SQL databases handle dynamic data manipulation and filtering? Table-Valued Parameters are the remarkable feature that empowers us to do just that. Allowing entire tables or arrays as parameters […]

ChistaDATA's Expertise in ClickHouse Vulnerability Remediation

ClickHouse Security: ChistaDATA’s Expertise in Vulnerability Remediation

Shiv Iyer

Introduction ClickHouse is a robust and high-performance columnar database widely used for real-time analytics and big data processing. Like any software, ClickHouse may have vulnerabilities that could potentially expose organizations to security risks. Understanding the anatomy […]

ClickHouse Installation: Cluster Setup and Configuration

ClickHouse Resource Safety: Implementing RAII and Destructors

Shiv Iyer

Introduction In ClickHouse’s C++ codebase, efficient resource management and preventing resource leaks are crucial for ensuring stable and high-performance data processing. C++ provides the powerful RAII (Resource Acquisition Is Initialization) idiom, which allows resources to […]

ClickHouse MergeTree: Understanding Storage Policies and Load Balancing

ChistaDATA Inc.

Introduction Optimizing data distribution and storage utilization is paramount when working with MergeTree tables in ClickHouse. This involves understanding and leveraging storage policies and load balancing mechanisms to ensure efficient data placement across disks and […]

ClickHouse Performance: Real-Time Monitoring of Expensive Queries

Shiv Iyer

Introduction Expensive queries in ClickHouse can have a significant impact on overall system performance, consuming valuable resources like CPU, memory, and disk I/O. These resource-intensive queries can lead to increased latency and reduced throughput, hampering […]

ClickHouse Troubleshooting: Deep Dive into ClickHouse Wait Events

Shiv Iyer

Introduction ClickHouse Wait Events are specific events or conditions that can cause the system to pause or wait during query execution. These events can significantly influence the performance of ClickHouse, as they impact query execution […]

Choosing The ClickHouse Right CPU Infrastructure

ClickHouse Performance: Choosing the Right CPU Infrastructure

Shiv Iyer

Introduction Selecting the right CPU infrastructure is critical for optimizing ClickHouse performance. Faster CPUs with higher clock speeds are beneficial for single-threaded tasks, while multi-core CPUs excel in parallel processing scenarios. This article delves into […]