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Lessons (24)

• What to Learn in AI, and in What Order

  … a complete regression experiment with a baseline and held-out evaluation. - [AI specialties and examples](/learn/ai/ai …

• What Is Artificial Intelligence? A Developer's Guide

  Understand AI, machine learning, deep learning, and generative AI through everyday examples and concrete software decisions. Start with …

• AI Agents and Tool Use

  … better than an agent. The big idea An AI agent is a system where a model selects actions …

• Putting AI Systems into Production

  … and human review. The big idea A production AI feature is a software system around a model: input …

• AI Evaluation, Safety, and Security

  … and handle sensitive data responsibly. The big idea AI behavior is probabilistic and can change with data, prompts …

• AI Specialties and Real-World Examples

  … a branch by its input and outcome The AI field is too broad to master in one project …

• Graphs: BFS & DFS

  … Home", "Mall"], School: ["Home", "Mall"], Mall: ["Park", "School", "Airport"], Airport: ["Mall"], }; ![Adjacency list vs adjacency matrix for the …

• Vertical Slice Architecture & the Modular Monolith

  … all cans in aisle 1, all bottles in aisle 2, all boxes in aisle 3. Or by what …

• Backend Languages: Node.js, Go, Python & Rust

  … easy for everyone, fits every accessory (data science, AI), not the fastest. - Rust 🏎️ = a race car: top …

• Choosing a Programming Language

  … an attachment for every job, especially data and AI. - A nail gun (Go) does one job, network services …

• Developer Learning Plan and Document-Assistant Capstone

  … retrieval baseline, and grow it into an evaluated AI application. Learn by shipping small deliverables Use the following …

• Transformers and Large Language Models

  … For high-impact uses, add authoritative sources, human review, explicit validation, or a non-AI rule-based check …

• I — Interface Segregation Principle

  … remote with 80 buttons for the TV, the air conditioner, the garage door and the microwave. Your grandmother …

• Python and Math Foundations with Runnable Examples

  … math should you learn next? Topic Use in AI Practice --- --- --- Vectors and matrices Features, embeddings, layer operations Dot …

• The L6 System-Design Thinking Loop

  … An airport is not judged only on sunny days. It must keep people safe during a storm, route …

• What Is Apache Kafka?

  … LinkedIn (trillions of messages per day), Netflix, Uber, Airbnb, banks, retailers. Over 80% of Fortune 100 companies. Why …

• Kafka vs RabbitMQ & the Kafka Ecosystem

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

• What Is Software Architecture?

  … just features. - Every choice is a trade-off ; aim for the least bad set for your context. - Styles …

• Authentication, Authorization & API Security

  … developer must know. The big idea At an airport: - Authentication (AuthN) = passport control: "Who are you?" You prove …

• Frontend Testing Strategy

  … only renders props). - Exact CSS or implementation details. - Aiming for 100% coverage : coverage shows what isn't tested …

• Behavioral Patterns II: Chain, Template, Iterator, Mediator, Memento, Visitor

  … Central hub instead of many-to-many links Airport control tower Memento Save and restore snapshots Game save …

• Node.js and Express

  … Those functions are middleware , like stations on an airport security line : check the ticket, scan the bag, check …

• Python Fundamentals

  … the glue language for automation, data science and AI. Picture a well-organised kitchen drawer : every tool has …

• 500 Users Upload Documents at Once: Design the Background Job Pipeline

  … limits and backpressure. The problem in context An AI application lets users upload PDFs. For every file the …