DataChild

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/data - articles

• Improving Sphinxsearch performance with attributes indexes

  Sphinxsearch is a popular full-text database and provides filtering based on attributes. Filtering queries can run with or without full-text search and might demonstrate poor performance on big document sets. Sphinx introduces attribute indexes to improve filtering queries performance, let's see how this works.

  Published 3 months ago in #data about #sphinx
• Enabling data at rest encryption in Mysql

  Data-at-rest encryption is important to ensure that data is secured from direct access to original database files. Let's see how to enable and use data-at-rest encryption in Mysql, which is supported for InnoDB storage engine.

  Published half a year ago in #data about #mysql and #security
• Converting strings to numbers in ClickHouse

  How to convert strings to integers and floats in ClickHouse. Controlling invalid values behavior on conversion.

  Published half a year ago in #data about #clickhouse
• How manage ingesting errors in ClickHouse

  Managing errors when ingesting data into ClickHouse, including text data sources like CSV and TSV.

  Published half a year ago in #data about #clickhouse
• How to merge large tables in ClickHouse using join

  How to merge multiple large tables into a single table based on a given column. A solution to MEMORY_LIMIT_EXCEEDED problem when joining large tables.

  Published half a year ago in #data about #clickhouse
• How to use Regex to feed text data to ClickHouse

  Using regex input format can help in loading unformatted or broken text data into Clickhouse. Using Regexp format for that with a practical example.

  Published half a year ago in #data about #clickhouse
• Using Sphinx to add full-text search to Clickhouse

  How to configure Sphinx to index text data from Clickhouse. What IDs to use for Clickhouse documents with Sphinx. How to build an index and resolve found documents in Clickhouse.

  Published half a year ago in #data about #clickhouse and #sphinx
• How to use multiple disks in Clickhouse

  How to configure multiple disks as storages in Clickhouse, and how to use different disks for different tables in Clickhouse.

  Published half a year ago in #data about #clickhouse
• Welcome to DataChild - place to learn data programming and ML

  This is a welcoming post about the idea behind this place, basic approaches, target audience and goals.

  Published half a year ago in #data

Denys Golotiuk in 2023

I'm a database architect, focused on OLAP databases for storing & processing large amounts of data in an efficient manner. Let me know if you have questions or need help.

Contact me via golotyuk@gmail.com or mrcrypster @ github