ClickHouse Performance Archives | Page 8 of 9

ClickHouse Search: Case-sensitive Searches with UPPER & LOWER Functions

Implementing a case-sensitive search in ClickHouse, a column-oriented database management system, can be achieved by using the UPPER or LOWER functions. These functions convert text data to either uppercase or lowercase, respectively, allowing for a consistent comparison.

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ClickHouse Server Configuration for High-Volume Data Ingestion

Shiv Iyer

Optimizing ClickHouse for high-velocity and high-volume data loading involves several server configuration and tuning techniques.

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Tuning index_granularity for ClickHouse Performance

Shiv Iyer

Understanding index granularity is crucial for troubleshooting performance issues in ClickHouse, especially when it comes to optimizing how ClickHouse uses indexes for query execution.

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Introduction to Vectorized Query Processing in ClickHouse

ClickHouse Performance: Introduction to Vectorized Query Processing

Shiv Iyer

In the world of data analytics, speed is of the essence. ClickHouse, an innovative columnar database management system, has gained prominence for its exceptional query performance. At the heart of this prowess lies ClickHouse’s vectorized […]

Comparing Columnar vs Row-based Databases for Real-time Analytics

Comparing Columnar Databases vs Row-based Databases

Shiv Iyer

Comparing Columnar Databases vs Row-based Databases In the dynamic landscape of data management, the choice between columnar stores and ROW-based databases has a profound impact on performance, especially in scenarios requiring rapid data retrieval and analytical prowess. […]

Comprehensive Guide to ChistaDATA’s ClickHouse Performance Audit

ChistaDATA Inc.

Introduction – ClickHouse Performance Audit ClickHouse is a powerful open source relational database management system that offers high performance, scalability, reliability and data security. As ClickHouse is widely used in various industries, it is important […]

Monitoring ClickHouse Server Load

Shiv Iyer

Introduction What is the Data Load distribution happening to ClickHouse Server? I ask this question often to ClickHouse infrastructure owners. This matrix is used for trending the load and throughput. This will help me identify […]

Compression Algorithms and Codecs in ClickHouse

ChistaDATA Inc.

Introduction The amount of data stored in databases is increasing day by day. This increases the cost required for data storage and network access. Compression techniques are a commonly used method to save storage space […]

ClickHouse MergeTree - Storage Infrastructure & Indexing

ClickHouse MergeTree: Configuring Storage Infrastructure & Indexes for Performance

Shiv Iyer

Introduction The heart of ClickHouse storage infrastructure is the MergeTree storage engine. They are 100% columnar data stores built for performance and resilience supporting customized partitioning, sparse primary key index, secondary data skipping indexes, […]

How to Recover ClickHouse After ZooKeeper Metadata is Corrupted?

ClickHouse Troubleshooting: How to Restore/Recover ClickHouse after ZooKeeper Metadata is Corrupted/Lost

ChistaDATA Inc.

Introduction When you are building a highly available ClickHouse Infrastrstucture for scale and performance we use ZooKeeper for ClickHouse Replication Management and Operations with ReplicatedMergeTree table engine. You can expect ZooKeeper to face data loss […]