Category · 463 articles

Data & Streaming

explain() and query plans: practical tips and trade-offs

APACHE SPARK & DATA ENGINEERING · DAY 024

explain() and query plans: practical tips and trade-offs

Expona Admin · Oct 27, 2026 · 6 min read

Spark memory management: real-world lessons and examples

APACHE SPARK & DATA ENGINEERING · DAY 025

Spark memory management: real-world lessons and examples

Expona Admin · Oct 27, 2026 · 6 min read

ETL pipeline design: a practical Spark & Data Eng guide

APACHE SPARK & DATA ENGINEERING · DAY 026

ETL pipeline design: a practical Spark & Data Eng guide

Expona Admin · Oct 27, 2026 · 7 min read

ETL vs ELT: everything engineers need to know in practice

APACHE SPARK & DATA ENGINEERING · DAY 027

ETL vs ELT: everything engineers need to know in practice

Expona Admin · Oct 27, 2026 · 9 min read

Medallion architecture: a practical guide for developers

APACHE SPARK & DATA ENGINEERING · DAY 028

Medallion architecture: a practical guide for developers

Expona Admin · Oct 27, 2026 · 8 min read

Data lakes, warehouses and lakehouses: a practical guide

APACHE SPARK & DATA ENGINEERING · DAY 029

Data lakes, warehouses and lakehouses: a practical guide

Expona Admin · Oct 27, 2026 · 6 min read

Delta Lake basics: a Spark & Data Eng guide for developers

APACHE SPARK & DATA ENGINEERING · DAY 030

Delta Lake basics: a Spark & Data Eng guide for developers

Expona Admin · Oct 27, 2026 · 7 min read

Apache Iceberg basics in Apache Spark & Data Engineering

APACHE SPARK & DATA ENGINEERING · DAY 031

Apache Iceberg basics in Apache Spark & Data Engineering

Expona Admin · Oct 27, 2026 · 7 min read

Upserts and slowly changing dimensions, explained simply

APACHE SPARK & DATA ENGINEERING · DAY 032

Upserts and slowly changing dimensions, explained simply

Expona Admin · Oct 27, 2026 · 11 min read

Incremental processing: a practical guide for developers

APACHE SPARK & DATA ENGINEERING · DAY 033

Incremental processing: a practical guide for developers

Expona Admin · Oct 27, 2026 · 7 min read

Change data capture: a practical Spark & Data Eng guide

APACHE SPARK & DATA ENGINEERING · DAY 034

Change data capture: a practical Spark & Data Eng guide

Expona Admin · Oct 27, 2026 · 8 min read

Spark Structured Streaming: patterns, pitfalls and fixes

APACHE SPARK & DATA ENGINEERING · DAY 035

Spark Structured Streaming: patterns, pitfalls and fixes

Expona Admin · Oct 27, 2026 · 5 min read

Watermarks and late data for Spark & Data Eng developers

APACHE SPARK & DATA ENGINEERING · DAY 036

Watermarks and late data for Spark & Data Eng developers

Expona Admin · Oct 27, 2026 · 6 min read

Exactly-once in streaming: practical tips and trade-offs

APACHE SPARK & DATA ENGINEERING · DAY 037

Exactly-once in streaming: practical tips and trade-offs

Expona Admin · Oct 27, 2026 · 6 min read

Spark with Kafka: a Spark & Data Eng guide for developers

APACHE SPARK & DATA ENGINEERING · DAY 038

Spark with Kafka: a Spark & Data Eng guide for developers

Expona Admin · Oct 27, 2026 · 7 min read

Data quality checks: a practical Spark & Data Eng guide

APACHE SPARK & DATA ENGINEERING · DAY 039

Data quality checks: a practical Spark & Data Eng guide

Expona Admin · Oct 27, 2026 · 10 min read

Deduplication strategies for Spark & Data Eng developers

APACHE SPARK & DATA ENGINEERING · DAY 040

Deduplication strategies for Spark & Data Eng developers

Expona Admin · Oct 27, 2026 · 8 min read

Window functions in Spark: practical tips and trade-offs

APACHE SPARK & DATA ENGINEERING · DAY 041

Window functions in Spark: practical tips and trade-offs

Expona Admin · Oct 27, 2026 · 5 min read

Handling nulls in Spark: real-world lessons and examples

APACHE SPARK & DATA ENGINEERING · DAY 042

Handling nulls in Spark: real-world lessons and examples

Expona Admin · Oct 27, 2026 · 8 min read

Working with dates and timestamps: a step-by-step guide

APACHE SPARK & DATA ENGINEERING · DAY 043

Working with dates and timestamps: a step-by-step guide

Expona Admin · Oct 27, 2026 · 7 min read