Technical ConceptsStudy & Reference Repository

21 interconnected articles covering API design, authentication, design principles, concurrency, distributed systems, and cloud operations. All code examples in Java with AWS integrations.

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Learning Paths

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Foundations

REST, OAuth 2.0, AWS SSO, agentic development, spec-driven design, hexagonal architecture, and clean architecture.

Start with REST →

🏗️

SOLID Principles

All five SOLID design principles with anti-patterns, correct implementations, and real-world Java examples.

Start with SRP →

⚡

Concurrency & Performance

Asynchronous programming with CompletableFuture and virtual threads, plus high-performance streaming with Kinesis and EMR.

Start with Async →

☁️

Infrastructure & Operations

Serverless vs containers, data consistency, Twelve-Factor App, graph databases with GenAI, Saga pattern, and microservices interdependency strategies.

Explore Infrastructure →

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Security

Symmetric and asymmetric encryption, hashing, digital signatures, AWS KMS, and Secrets Manager.

Learn Cryptography →

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Learning Paths

Four curated sequences for Scalable APIs, Big Data, Writing Quality Code, and Enterprise Security.

Choose a Path →