DEVELOPER BLOG

Tutorials, guides, and tools.

Practical guides and interactive playgrounds for everyday developer workflows.

INTERACTIVE SIMULATOR • CELERY

Celery architecture: how a task travels from producer to worker

Send a Python task through an interactive Celery and Redis simulator: route it with direct, topic or fanout exchanges, switch on acks_late, lose a worker and see what AsyncResult returns. Then inspect a real job in Redis.

November 6, 2026 • 15 min read Read post →

INTERACTIVE TUTORIAL • JQ

jq tutorial: filter, select and reshape JSON with examples

Learn jq on a small orders response: get fields, filter with select(), sort and group arrays, handle missing keys, and use jq -r in the terminal. Every example runs in your browser, and the page ends with a cheat sheet.

November 2, 2026 • 11 min read Open the jq playground Read tutorial →