Articles by tag: big-data

ClickHouse: why columnar DBMS accelerate analytics by 100 times

We explain using real benchmarks and a betting scheme: ClickHouse vs PostgreSQL and MySQL. Architecture, query examples, use cases. Read 5 minutes.

HyperLogLog and Count-Min Sketch in Go for Big Data

Implementation of HyperLogLog and Count-Min Sketch in Go: code, benchmarks, comparison. Estimating uniqueness and frequencies with minimal memory for data streams. For middle/senior devs.

ClickHouse with Airflow instead of PostgreSQL for Big Data

Learn why Airflow + ClickHouse is displacing PostgreSQL in analytics. Performance comparison, examples for data engineers. Switch to columnar DB for ETL pipelines.

Big Data Courses 2026: Data Engineering Overview

Comparison of 6 Big Data and Data Engineering courses: from zero to middle. ETL, Spark, Kafka, Yandex Cloud. Choose a program by level and format for a career in 2026. Sign up now.