ClickHouse Performance Archives | Page 6 of 7

ClickHouse Troubleshooting: Not Able to Connect to ClickHouse

Comprehensive Guide for ClickHouse Horizontal Scaling and Capacity Planning

Calculating your company’s required real-time analytics capacity on ClickHouse involves several steps and considerations. It’s important to assess current and projected data volumes, query complexity, and the expected concurrency of queries.

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ClickHouse Horizontal Scaling: Optimal Read-Write Split Configuration and Execution

Shiv Iyer

Scaling ClickHouse horizontally while optimizing the split between read and write operations is a multi-step process that involves setting up a cluster with sharded and replicated tables.

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

Shiv Iyer

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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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 […]

ChistaDATA Real-time Analytics

Building Real-time Analytics Infrastructure with ChistaDATA’s ClickHouse

Shiv Iyer

Introduction I have been a full-time Open Source Database Systems Performance Engineer for the last two decades with deep interests in Database Systems Internals, Database Systems (Transaction Processing and ColumnStores) Operations Performance Troubleshooting/Optimization and Unix/Linux […]