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Lessons (24)

• Transformers and Large Language Models

  Learn tokens, next-token prediction, attention, pretraining, fine-tuning, context windows, and the limits of language models. The …

• Domain-Driven Design: Strategic Design

  … Bounded contexts ⭐ A bounded context is an explicit boundary inside which one model and one language apply consistently …

• What Is Artificial Intelligence? A Developer's Guide

  … A chatbot is an interface, and can use rules, retrieval, a language model, or a combination. Training versus …

• Embeddings, Semantic Search, and RAG

  Use vector representations to retrieve relevant source material and ground language-model answers in your documents. The big …

• What to Learn in AI, and in What Order

  … Python is the most common language for model experiments; SQL and basic data visualization are useful too. 2 …

• Finding Service Boundaries with DDD

  … boundary inside which one model and one language apply The Shipping context Ubiquitous language Words that developers and …

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

  … core 1] & C2[CPU core 2] end Language Concurrency model Great at Watch out for --- --- --- --- Node.js Single …

• Choosing a Programming Language

  … what each one is best at](/img/languages/language-map.svg) The questions that actually decide mermaid flowchart …

• AI Specialties and Real-World Examples

  Explore vision, language, speech, recommendations, anomaly detection, forecasting, reinforcement learning, and generative systems. Choose a branch by its …

• AWS Data Pipelines in Plain Language

  … Choose overwrite-by-partition, merge, or durable event deduplication according to the model. Preserve raw inputs and record …

• Domain-Driven Design: Tactical Patterns

  The building blocks for modelling rules in code. Entities, value objects, aggregates and their four rules, repositories, domain …

• Event-Driven Architecture

  … CQRS Events keep separate read models up to date Write model publishes; read model projects Fast, tailored reads …

• Time, Consistency and Distributed Transactions

  … edits with an explicit transformation model. A checkout Saga in plain language Reserve inventory locally, then request payment …

• Hexagonal Architecture (Ports & Adapters)

  … domain model + use cases. No I/O, no frameworks Order , PlaceOrder Port An interface defined by the core …

• Developer Learning Plan and Document-Assistant Capstone

  … print(f"[{match['id']}] {match['text']}") This is keyword overlap, not embedding search or a language model. It …

• Python Web APIs: FastAPI and Django

  … owner = models.ForeignKey(settings.AUTH USER MODEL, on delete=models.CASCADE, related name="tasks") title = models.CharField(max …

• SQL vs NoSQL Databases

  … ISODate("2026-09-28T10:00:00Z") } db.orders.find({ "customer.email": "ana@mail.com" }).sort({ createdAt: -1 }); 💡 Model …

• React vs Vue vs Angular

  … Simple mental model; sometimes needs memoisation. - Vue wraps state in Proxies (remember the Proxy pattern?) and tracks exactly …

• TypeScript in Practice

  … compile time, runtime validation guards the boundary](/img/languages/ts-compile-vs-runtime.svg) 📘 Basic types, interfaces vs …

• Microkernel (Plugin) Architecture

  … Plug-ins --- --- --- VS Code Editor, extension host, APIs Language support, themes, Git tools, linters Web browsers Rendering engine …

• C4 Architecture Diagrams: Context, Container, Component and Code

  … The C4 model is a simple way to make that map. It has four zoom levels. Each level …

• Go Web Services with Gin

  … The kitchen is the same. ![A Gin request flows through middleware, handler, service and repository](/img/languages/gin …

• Go Concurrency: Goroutines, Channels and Context

  … few OS threads by the Go scheduler](/img/languages/go-scheduler.svg) Goroutines go func main() { go sendEmail …

• Rust: Types, Errors and Concurrency

  … enums and match, Option and Result, traits, smart pointers, threads](/img/languages/rust-toolkit.svg) Structs, enums and …