Archive

2025  1

February  1

馃毃 The Hidden Pitfall That Sabotages SQL Performance: Functions on Indexed Columns 馃搲

February 5, 2025 路 6 min 路 1250 words 路 Vesko Vujovic

2024  7

November  2

Speed Up Your Spark Jobs: The Hidden Trap in Union Operations

November 29, 2024 路 4 min 路 844 words 路 Vesko Vujovic

AWS Lambda Event Source Mapping: The Magic Behind Kafka Offset Management

November 16, 2024 路 5 min 路 1002 words 路 Vesko Vujovic

October  2

DuckDB Inside Postgres: The Unlikely Duo Supercharging Analytics

October 30, 2024 路 9 min 路 1730 words 路 Vesko Vujovic

Apache Spark: Beware of Column Ordering and Data Types When Using Apache Spark’s Union Function

October 6, 2024 路 5 min 路 1038 words 路 Vesko Vujovic

September  1

Apache Spark: Why JSON isn’t ideal format for your spark job

September 9, 2024 路 5 min 路 924 words 路 Vesko Vujovic

August  1

AWS: Lambda Event Source Mapping with Confluent Kafka

August 4, 2024 路 5 min 路 981 words 路 Vesko Vujovic

July  1

Apache Spark: Dataset vs Dataframe - The Tortoise and Hare

July 21, 2024 路 5 min 路 976 words 路 Vesko Vujovic