📰 Dev.to · Gowtham Potureddi

Parquet File Format Internals: Row Groups, Encodings, Predicate Pushdown & Bloom Filters

Parquet File Format Internals: Row Groups, Encodings, Predicate Pushdown & Bloom Filters

Arrow Flight & Flight SQL: High-Speed Data Transport Beyond JDBC/ODBC

Apache Arrow for Data Engineers: Zero-Copy Columnar Memory Across the Whole Stack

Pydantic for Data Engineering: Schema Validation in ETL & Pipeline Contracts

Apache Beam Programming Guide: PCollections, Windowing, Runners (Dataflow / Flink)

Flink CDC Connectors: Schema-First Streaming Ingest at Scale

dbt Model Contracts, Constraints & Versioning: Production Patterns

dbt Model Contracts, Constraints & Versioning: Production Patterns

Apache Pulsar vs Kafka for Data Engineering: Geo-Replication, Tiered Storage & Functions

Spark Structured Streaming: Triggers, State, Watermarks & Exactly-Once Sinks

Kafka Connect Deep Dive: Source, Sink, SMTs, Schema Registry & Idempotent Writes

Change Data Capture (CDC) for Data Engineering Interviews: Debezium, Log-Based vs Trigger-Based, Kafka Connect

MySQL Interview Questions & Answers: Top Patterns for Data Engineers

CREATE TABLE & ALTER TABLE in SQL: Schema Design for Data Engineers

SQL PIVOT and UNPIVOT: Reshape Rows ↔ Columns for Analytics

SQL Date Functions: DATEDIFF, DATE_FORMAT, EXTRACT & Date Math

GROUP BY and HAVING in SQL: Aggregation Patterns for Interviews

SQL CASE WHEN Statement: Conditional Logic for Data Engineering

chime Data Engineering Interview Questions: Full Prep Guide

Harvey Nash Data Engineering Interview Questions: Full Prep Guide

Agoda Data Engineering Interview Questions: Full Prep Guide

Tiger Analytics Data Engineering Interview Questions: Full Prep Guide

Roblox Data Engineering Interview Questions: Full DE Prep Guide