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Lessons (14)

• Microkernel (Plugin) Architecture

  A small, stable core plus independent plug-ins that add features. How VS Code, browsers, Webpack and ESLint …

• What to Learn in AI, and in What Order

  … and cost Train predictive models Python, SQL, statistics, feature engineering, scikit-learn, and experiment design Build deep-learning …

• AWS Databases: Choose the Right One

  … managed SQL database RDS runs engines such as PostgreSQL and MySQL while AWS handles hardware, backups, and many …

• Resilience, Disaster Recovery and Multi-Region Design

  … serve cached or reduced features rather than errors. - Use health checks that reflect real readiness, but beware shallow …

• Choosing an Architecture

  … new features and migrated routes go to the new system until the old one can be switched off …

• Kafka vs RabbitMQ & the Kafka Ecosystem

  … Managed services handle brokers, upgrades and scaling: Confluent Cloud , Amazon MSK , Aiven , Redpanda (a Kafka-compatible engine), Azure …

• Resilience Patterns

  … fail clearly and let the user retry Decide in advance which features are critical (must work or fail …

• Domain-Driven Design: Strategic Design

  … Spending your best engineers on building your own login system (generic) while the recommendation engine (core) is a …

• Developer Learning Plan and Document-Assistant Capstone

  … A measured small system demonstrates more engineering skill than an untested chatbot demo. Check your understanding - Why use …

• Observability: Logs, Metrics & Traces

  … A car dashboard shows your speed, fuel and engine temperature ( metrics ). The car's black box records every …

• Frontend Testing Strategy

  … each bolt (unit), each engine (integration), and finally a test drive of the whole car (end-to-end …

• 10,000 Users Do Not Need 10,000 Database Connections

  … The practical lesson is not that one engine is “heavy” and the other is “light.” It is that …

• Node.js and Express

  … The big idea Node.js is the JavaScript engine from Chrome (V8) taken out of the browser, plus …

• Python Web APIs: FastAPI and Django

  … typed env vars ├── database.py engine + session dependency ├── models.py SQLAlchemy tables ├── schemas.py Pydantic request/response models …