ClickHouse Internals Archives | Page 16 of 17

Vertica vs ClickHouse: Comparison of Key Features

Introduction ClickHouse and Vertica are both columnar databases that are optimized for analytical queries and real-time analytics. However, there are some key differences between the two that make ClickHouse better suited for real-time analytics. Comparative […]

ClickHouse vs Hadoop for Real-time Analytics

Limitations of Hadoop in Real-time Analytics

Shiv Iyer

Introduction Hadoop is a powerful, open-source ecosystem for storing and processing large datasets, but it is not well-suited for real-time analytics. Hadoop’s limitations in Real-time Analytics Here are a few reasons why Hadoop is not […]

Integrating Kafka with ClickHouse for Real-time Stream Processing in Fintech

Shiv Iyer

Introduction A financial technology (FinTech) company may integrate Kafka with ClickHouse to enable real-time stream processing of financial data across a variety of use cases such as merchant settlements, fraud analytics, and transaction monitoring. By […]

Why is ClickHouse better than Hadoop for Real-time Analytics?

Shiv Iyer

Introduction ClickHouse is a column-oriented, open-source analytics database that is designed for real-time OLAP (online analytical processing) and OLTP (online transaction processing) use cases. It is optimized for large-scale data processing, high-performance queries, and real-time […]

How to set up Real-time Streaming Bulk Data Loading from Kafka to ClickHouse?

Shiv Iyer

Introduction Setting up real-time streaming bulk data loading from Kafka to ClickHouse involves several steps: Install and configure Kafka: Install and configure Apache Kafka on a cluster of machines. This will allow you to produce […]

Decoding Memory Management in ClickHouse

Shiv Iyer

Introduction ClickHouse uses a memory management system to control the allocation and deallocation of memory resources. The main components of the memory management system are: Memory Pool: ClickHouse uses a memory pool to manage the […]

ClickHouse MergeTree: Use Cases for ClickHouse Storage Engines

Shiv Iyer

Introduction ClickHouse supports several storage engines, each with its own characteristics and performance characteristics. The storage engine you choose will depend on the specific requirements of your use case and the data you are working […]

Tuning ClickHouse Configuration Parameters for High Performance

Shiv Iyer

Introduction Tuning ClickHouse configuration parameters for performance can be a complex task, but there are a few key parameters that can have a significant impact on performance. Here is a general guide for tuning ClickHouse […]

How does the ClickHouse Query Parser work?

Shiv Iyer

Introduction ClickHouse uses a SQL parser to process SQL statements and convert them into a query execution plan. The parser is responsible for validating the syntactic and semantic correctness of SQL statements, and for transforming […]

How Regular Expressions Are Implemented in ClickHouse

How are Regular Expressions (RegEx) implemented in ClickHouse?

Shiv Iyer

Introduction In ClickHouse, regular expressions are implemented using the match function and the like operator. The match function is used to check if a string matches a specified regular expression. The syntax for the function […]

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