Tutorials

A developer who lands on a data team hears ETL, warehouse, lakehouse, and reverse ETL in the first meeting and understands none of it. This article maps the full data lifecycle, from source to dashboard, with code examples in SQL, Python, and dbt so any engineer can grasp what each tool does and when to use it.

Job queues decouple the producer from the consumer, but they hide hard problems: duplicate retries, non-idempotent jobs, and messages that never resolve. This article walks through each piece with code examples in BullMQ, SQS, and RabbitMQ.

A technical walkthrough of the most curious quirks in K&R C, the origin of the null pointer problem in C and C++, and how the for loop syntax changed from 1978 to C++20. Includes progressive code examples and commands to reproduce each quirk in your own terminal.

Telegram Serverless lets you write JavaScript modules that run directly on Telegram’s infrastructure, with a SQLite database and HTTP API included. No VPS, no containers, nothing to maintain.