50 Software Engineering & DevOps Tutorials
Software Engineering Tutorials
Deep, practical walkthroughs of the topics covered on the MasterLAB Systems channel — Java, Spring Boot, microservices, DevOps, containers, cloud and system design.
Spring Boot Microservices Architecture Explained Step by Step
A complete, beginner-friendly walkthrough of microservices architecture using Spring Boot — services, gateway, discovery, config and observability.
How to Build a Spring Cloud Config Server
Step-by-step guide to building a centralized configuration server with Spring Cloud Config, Git-backed properties and dynamic refresh.
Dockerizing a Spring Boot Application: The Right Way
Build small, fast and secure Docker images for Spring Boot using multi-stage builds, layered jars and JVM container tuning.
CI/CD Pipeline with GitHub Actions and Docker
Build a complete CI/CD pipeline that tests, builds and pushes a Spring Boot Docker image on every push using GitHub Actions.
API Rate Limiting in Spring Boot with Bucket4j and Redis
Protect your APIs from abuse with per-user and per-IP rate limiting using Bucket4j, Redis and a clean filter-based implementation.
Deploying Spring Boot to AWS: ECS Fargate End-to-End
Containerize a Spring Boot app, push to ECR, run on ECS Fargate behind an Application Load Balancer — production-ready in one tutorial.
Kubernetes Basics for Java Developers
Everything a backend developer needs to know about Kubernetes — Pods, Deployments, Services, Ingress and ConfigMaps — explained with a Spring Boot example.
Service Discovery with Eureka in Spring Boot
How service discovery works, why you need it, and how to set up Netflix Eureka with Spring Cloud step by step.
Building REST APIs with Spring Boot: A Complete Guide
Design and build a production-ready REST API with Spring Boot — proper layering, DTOs, validation, error handling and testing.
Java Backend Interview Questions and Answers (with Examples)
The most common Java backend interview questions — Spring, JPA, concurrency, microservices and system design — with detailed answers.
Circuit Breaker in Spring Boot with Resilience4j — Protect Your System from Overload
Stop cascading failures in microservices. Add a Resilience4j circuit breaker to any Spring Boot call in under 10 minutes.
Spring Cloud Gateway — Routing, Filters and Auth in One Place
Build a production API gateway with Spring Cloud Gateway: routing, JWT auth, rate limiting and request logging.
Kafka & ZooKeeper Docker Setup — Quick Deploy Guide
Spin up a local Kafka cluster with ZooKeeper in 60 seconds using docker-compose, ready for Spring Boot integration.
Spring Boot + Kafka — Build a Real-Time Messaging System
Produce and consume Kafka messages from Spring Boot with proper serialization, error handling and consumer groups.
Spring Boot + Redis Caching — Make Your API 10× Faster
Cache hot reads with Redis and Spring's @Cacheable in minutes. Includes TTLs, eviction and key design tips.
Spring Data JPA — 10 Best Practices for Production
Avoid N+1, lazy loading traps, and slow startup. The 10 JPA practices that separate hobby apps from production systems.
Spring Security + JWT — Stateless Auth Done Right
A practical, modern Spring Security 6 setup: JWT validation, stateless sessions, and method-level authorization.
A Pragmatic Spring Boot Testing Strategy
What to unit-test, what to slice-test, and when to spin up Testcontainers. A pyramid you can actually maintain.
Deploy Spring Boot to Kubernetes with a Helm Chart
Package a Spring Boot service as a reusable Helm chart with values for env, replicas, probes and HPA.
Deploy Spring Boot to AWS ECS Fargate — End to End
Containerize a Spring Boot service and ship it to AWS ECS Fargate behind an Application Load Balancer.
Understanding SOLID Principles in Object-Oriented Design
A complete introduction to the five SOLID principles with Java examples and Spring Boot context — the foundation of clean object-oriented code.
Essential Software Design Principles Every Developer Should Know
A practical overview of the design principles that separate junior and senior engineers — DRY, KISS, YAGNI, SOLID, separation of concerns and more.
Design and Implement a Multi-Region Load Balancing Strategy with Netflix Ribbon and Eureka
Build a multi-region, highly available Spring Cloud system with Eureka service discovery and Netflix Ribbon client-side load balancing — including region-aware routing, failover and Docker Compose setup.
Scaling Java Microservices on AWS EKS with Terraform and Horizontal Pod Autoscaling
A production guide to scaling Spring Boot microservices on Amazon EKS using Terraform for infrastructure and Horizontal Pod Autoscaling for elastic capacity — with metrics, cost tips and CI/CD integration.
Automating Database Migrations with Flyway and Spring Boot in a CI/CD Pipeline
Ship safe, versioned, zero-downtime database migrations with Flyway and Spring Boot — including PostgreSQL examples, multi-environment handling and a complete GitHub Actions pipeline.
Serverless Java: Spring Boot on AWS Lambda with GraalVM
Deploy Spring Boot on AWS Lambda with GraalVM native image to eliminate cold starts — including build configuration, API Gateway integration, benchmarks and cost comparisons vs containers.
Implementing Distributed Locking with Java Spring Boot and Redis for Data Integrity
A production guide to distributed locking with Spring Boot and Redis (Redisson) — preventing race conditions, ensuring idempotency, and handling failure gracefully in high-concurrency systems.
Modular Monolith Architecture in Spring Boot — The Right Way to Scale a Monolith
Why modern teams are returning to modular monoliths — module boundaries, package-by-feature, internal events and a clean migration path to microservices in Spring Boot.
Hexagonal Architecture with Spring Boot — Build Clean, Maintainable Applications
A practical guide to Ports and Adapters (Hexagonal Architecture) in Spring Boot — isolate your domain, make your code testable, and keep infrastructure swappable.
Domain-Driven Design (DDD) with Spring Boot — Practical Guide for Real Systems
A no-nonsense guide to Domain-Driven Design with Spring Boot — bounded contexts, aggregates, value objects, domain events and how to apply DDD without ceremony.
Event-Driven Architecture with Spring Boot and Kafka — Building Reactive Distributed Systems
Design and implement event-driven systems with Spring Boot and Kafka — producers, consumers, schemas, idempotency, dead-letter queues and production-grade patterns.
Building REST APIs with FastAPI — A Complete Guide
A complete, production-focused walkthrough of building REST APIs with FastAPI — Pydantic models, dependency injection, async endpoints, SQLAlchemy and Docker.
FastAPI Microservices Architecture Explained Step by Step
How to design and build a Python microservices architecture with FastAPI — services, API gateway, async messaging, Redis, Postgres and Docker Compose.
Dockerizing a FastAPI Application the Right Way
Build small, fast, secure Docker images for FastAPI — multi-stage builds, Gunicorn + Uvicorn workers, non-root users, and production-ready Dockerfiles.
CI/CD Pipeline for FastAPI with GitHub Actions and Docker
Build a complete CI/CD pipeline for a FastAPI app — pytest, linting, Docker image builds, container registry push and deployment from GitHub Actions.
FastAPI + Redis Caching — Make Your API Faster
Add Redis caching to FastAPI the right way — async Redis client, decorator-based caching, TTL strategies and cache invalidation patterns.
JWT Authentication in FastAPI — Secure APIs Properly
Implement JWT authentication in FastAPI the right way — OAuth2PasswordBearer, password hashing, access + refresh tokens and role-based access control.
FastAPI + Kafka — Build Real-Time Event Systems
Build event-driven systems with FastAPI and Apache Kafka using aiokafka — producers, consumers, schemas, retries and exactly-once-ish semantics.
Deploy FastAPI Applications to Kubernetes
A complete guide to deploying FastAPI on Kubernetes — Deployment, Service, Ingress, ConfigMaps, Secrets, HPA and zero-downtime rollouts.
FastAPI Testing Strategy — Unit, Integration and API Testing
A pragmatic FastAPI testing strategy with pytest — unit tests, async TestClient, dependency overrides, real Postgres via testcontainers and CI integration.
FastAPI vs Spring Boot — Which Backend Framework Should You Choose?
An honest, side-by-side comparison of FastAPI and Spring Boot — performance, developer experience, async capabilities, ecosystem, scalability and real-world fit.
GitOps with ArgoCD — The Modern Kubernetes Deployment Strategy
A complete, production-grade guide to GitOps with ArgoCD on Kubernetes — workflow, architecture, multi-environment promotion, auto-sync, rollbacks and Spring Boot deployments.
Infrastructure as Code with Terraform — Deploy AWS Resources Like a Pro
Master Terraform for AWS: workflow, state management, modules, VPC + EC2 + RDS + S3, GitHub Actions CI/CD pipeline, security and production best practices.
Observability in Microservices — Prometheus, Grafana and OpenTelemetry
End-to-end observability for Spring Boot microservices: metrics with Prometheus, dashboards with Grafana, distributed tracing with OpenTelemetry, alerting and Kubernetes monitoring.
CQRS Pattern in Spring Boot — Separating Reads and Writes for Scale
A complete production guide to the CQRS pattern in Spring Boot — write models, query models, event projections, Kafka integration, consistency trade-offs and real-world scaling patterns.
The Outbox Pattern — Reliable Event Publishing in Microservices
Solve the dual-write problem with the transactional Outbox pattern. Production guide using Spring Boot, JPA, PostgreSQL, Kafka and Debezium with idempotent consumers and operational best practices.
Designing Event-Driven Microservices with Kafka and Spring Boot
A complete production guide to event-driven microservices with Kafka and Spring Boot — producers, consumers, topics, partitions, consumer groups, retry strategies, schema evolution and operational best practices.
Blue-Green Deployments with Kubernetes — Zero Downtime Releases
A complete production guide to blue-green deployments on Kubernetes — Deployments, Services, Ingress, traffic switching, instant rollback, database compatibility and the full release process.
Redis Distributed Caching Architecture for High-Traffic APIs
Build a production-grade distributed cache with Redis and Spring Boot — cache-aside, @Cacheable, TTL, eviction, cache stampedes, warming, hit-rate monitoring and scalability for high-traffic APIs.
Java Design Patterns — A Field Guide for Working Backend Engineers
Which Gang-of-Four pattern to reach for, when, and when to skip patterns entirely. A practical reference for Java backend services.