Labs Overview
StackLab uses labs to turn important engineering concepts into inspectable systems instead of static notes.
What A Lab Should Do
A strong StackLab lab should help users:
- understand the problem
- inspect behavior over time
- compare implementation choices
- see failure modes
- connect the concept to real product architecture
Lab Families
System Design Lab
Distributed systems, request flow, load, failure, and infrastructure tradeoffs.
Runtime Lab
JavaScript internals, event loop behavior, queue movement, and execution flow.
Production Patterns Lab
Auth, locking, idempotency, caching, queues, retries, and other shared production patterns.
Applied Architecture Lab
Booking, chat, payments, notifications, and end-to-end product systems.
Data Systems Lab
Transactions, indexes, replication, isolation, and consistency behavior.
Reliability and Operations Lab
Deployments, observability, SLOs, incidents, rollbacks, and operational resilience.
Security and Identity Lab
Authentication, authorization, token flows, tenant boundaries, and secure defaults.
Delivery and SDLC Lab
CI/CD, release flow, testing strategy, config management, and engineering process.
Standard Output
Every serious lab should answer:
- what is happening
- why it matters
- what can be changed
- what changed after the user changed it
- what the tradeoffs are