Guides
In-depth, in-site guides that move from fundamentals to real system design decisions.
Backend Engineer
Practical backend subject guides aligned to the 2–3 years backend engineer roadmap.
Docker
Deep dives that follow the Docker roadmap — what a container really is, building images with BuildKit, runtime behaviour, and production hardening.
Applied AI Engineering
Deep dives that follow the Applied AI Engineer roadmap — LLM foundations, RAG, agents, and production LLMOps.
Kubernetes
Deep dives that follow the Kubernetes roadmap — the control plane and reconciliation, workloads and probes, Gateway API networking, storage, scheduling, and running a cluster.
Low-Level Design
Master object-oriented design, design patterns, and LLD interview problems.
Spring AI
Deep dives that follow the Spring AI roadmap — chat, RAG, agentic orchestration, and the wider JVM AI ecosystem.
System Design
Master the art of designing scalable, resilient, and high-performance systems.