Complete course materials organized by module
Module 1 — Fundamentals module-01-fundamentals.md
Section 1: Introduction to Load Balancing & Reverse Proxies
- What Is a Reverse Proxy?
- Load Balancing Fundamentals
- Why DevOps Engineers Need Nginx & HAProxy Knowledge
- Common Use Cases
- Layer 4 vs Layer 7 Load Balancing
- Forward Proxy vs Reverse Proxy
Section 2: Nginx Basics
- Nginx Architecture Overview
- Master & Worker Process Model
- Event-Driven Architecture
- Nginx vs Apache
- Installation Methods
- Basic Configuration Structure
Section 3: HAProxy Basics
- HAProxy Architecture Overview
- HAProxy vs Nginx
- When to Use HAProxy
- Installation Methods
- Basic Configuration Structure
Module 2 — Nginx Deep Dive module-02-nginx-deep-dive.md
Section 4: Nginx Configuration Essentials
- Configuration File Structure (nginx.conf)
- Context Hierarchy (main, events, http, server, location)
- Core Directives & Parameters
- Configuration Testing & Validation
- Hot Reload & Graceful Restart
- Include Files & Configuration Organization
Section 5: Worker Process Tuning
- Worker Processes vs Worker Connections
- CPU Affinity & Multi-Core Optimization
- Event Models (epoll, kqueue, select)
- Connection Processing Optimization
- Memory Management
- Lab: Optimize Worker Configuration
Section 6: HTTP Server Configuration
- Virtual Hosts (Server Blocks)
- Server Names & Name Resolution
- Listen Directives & Port Binding
- Root & Alias Directives
- Index Files & Autoindex
- Default Servers & Catch-All
Module 3 — Advanced Nginx Features module-03-nginx-advanced.md
Section 7: Location Blocks & Request Routing
- Location Block Matching Rules
- Regex Locations & Named Captures
- Location Priority & Processing Order
- Try Files Directive
- Rewrite Rules & Redirects
- Internal Redirects
Section 8: Load Balancing with Nginx
- Upstream Configuration
- Load Balancing Algorithms (Round Robin, Least Conn, IP Hash, etc.)
- Health Checks (Active & Passive)
- Upstream Keepalive
- Backup & Down Servers
- Sticky Sessions
- Lab: Multi-Backend Load Balancer
Section 9: Proxying & Headers
- proxy_pass Configuration
- Proxy Headers Management
- X-Real-IP & X-Forwarded Headers
- Host Header Handling
- Proxy Buffering & Timeouts
- WebSocket Proxying
Module 4 — HAProxy Deep Dive module-04-haproxy-deep-dive.md
Section 10: HAProxy Configuration Essentials
- Configuration File Structure (haproxy.cfg)
- Global, Defaults, Frontend, Backend Sections
- Bind & Server Directives
- Configuration Validation
- Logging Configuration
- Stats & Monitoring Interface
Section 11: Load Balancing Algorithms
- Round Robin & Weighted Round Robin
- Least Connections
- Source IP Hashing
- URI Hashing
- Random & RDP Cookie
- Custom Load Balancing Logic
- Lab: Compare Load Balancing Algorithms
Section 12: Health Checks & Monitoring
- Layer 3/4 Health Checks
- Layer 7 HTTP Health Checks
- Custom Health Check Scripts
- Check Intervals & Timeouts
- Rise & Fall Parameters
- Observability & Stats Socket
Module 5 — Performance & Optimization module-05-performance-optimization.md
Section 13: Nginx Performance Tuning
- Worker Process Optimization
- Connection & Request Limits
- Buffer Size Tuning
- Sendfile & TCP Optimizations
- Gzip & Compression
- Open File Cache
- Client Body & Header Timeouts
- Lab: Benchmark & Optimize Nginx
Section 14: HAProxy Performance Tuning
- Maxconn & Connection Limits
- Timeout Configuration
- Buffer Tuning
- Thread Model Configuration
- Connection Pooling
- Backend Connection Reuse
- Lab: HAProxy Performance Testing
Section 15: Caching Strategies
- Nginx Caching (proxy_cache)
- Cache Keys & Zones
- Cache Bypass & Purging
- Cache Locking
- Microcaching Patterns
- Cache Warming Strategies
Module 6 — SSL/TLS & Security module-06-ssl-security.md
Section 16: SSL/TLS Configuration
- Certificate Management
- SSL Protocols & Cipher Suites
- Perfect Forward Secrecy
- OCSP Stapling
- SSL Session Caching
- HTTP/2 & HTTP/3 Configuration
- Let's Encrypt Integration
Section 17: Security Hardening
- Rate Limiting & DDoS Protection
- Request Filtering & Validation
- Security Headers (HSTS, CSP, etc.)
- Access Control (IP Whitelisting/Blacklisting)
- ModSecurity & WAF Integration
- Bot Protection
- Lab: Implement Security Best Practices
Section 18: Authentication & Authorization
- Basic Authentication
- JWT Validation
- OAuth2 Integration
- Client Certificate Authentication
- API Gateway Patterns
- Request/Response Modification
Module 7 — High Availability & Scaling module-07-high-availability.md
Section 19: High Availability Patterns
- Active-Active vs Active-Passive
- Keepalived & VRRP
- HAProxy Peer Synchronization
- DNS-Based Load Balancing
- Geographic Distribution
- Failover Strategies
Section 20: Container & Kubernetes Deployment
- Dockerizing Nginx & HAProxy
- Nginx Ingress Controller
- HAProxy Ingress Controller
- Service Mesh Integration
- ConfigMap & Secret Management
- Lab: Deploy HA Load Balancer on K8s
Section 21: Scaling Strategies
- Horizontal vs Vertical Scaling
- Connection Pooling
- Backend Scaling Patterns
- Auto-Scaling Integration
- Multi-Region Architecture
Module 8 — Observability & Troubleshooting module-08-observability-troubleshooting.md
Section 22: Logging & Monitoring
- Access & Error Logs
- Custom Log Formats
- Structured Logging (JSON)
- Log Rotation & Management
- Prometheus Exporter Integration
- Metrics Collection
- Real-Time Monitoring
Section 23: Debugging & Troubleshooting
- Debug Logging
- Connection Tracing
- Common Issues & Solutions
- Performance Bottleneck Analysis
- Packet Capture & Analysis
- Lab: Debug Production Issues
Section 24: Observability Stack Integration
- ELK Stack Integration
- Grafana & Prometheus
- Datadog & New Relic
- Distributed Tracing
- APM Integration
Module 9 — Advanced Patterns & Use Cases module-09-advanced-patterns.md
Section 25: API Gateway Patterns
- Request/Response Transformation
- Request Aggregation
- Circuit Breaker Pattern
- Rate Limiting & Throttling
- API Versioning
- GraphQL Proxying
Section 26: Microservices Architecture
- Service Discovery Integration
- Blue-Green Deployments
- Canary Releases
- Traffic Splitting & A/B Testing
- Service Mesh Comparison
- Lab: Implement Canary Deployment
Section 27: Edge Computing & CDN
- Edge Caching Strategies
- Multi-Tier Caching
- Edge Side Includes (ESI)
- Purge & Invalidation
- Geographic Routing
- CDN Integration
Module 10 — Production Best Practices module-10-production-best-practices.md
Section 28: Configuration Management
- Infrastructure as Code
- Configuration Templating
- Ansible/Terraform Integration
- GitOps Workflows
- Configuration Validation CI/CD
- Lab: Automated Deployment Pipeline
Section 29: Capacity Planning
- Load Testing Strategies
- Capacity Forecasting
- Resource Sizing
- Benchmark Tools (wrk, ab, siege)
- Stress Testing
Section 30: Operational Excellence
- Disaster Recovery
- Backup & Restore Procedures
- Incident Response
- Runbooks & Documentation
- Zero-Downtime Upgrades
- Final Lab: Production-Ready Load Balancer Setup
After completing this course, you will be able to:
✅ Design & deploy production-grade load balancing solutions
✅ Optimize performance for high-traffic applications
✅ Implement security best practices and SSL/TLS
✅ Troubleshoot complex proxy & load balancing issues
✅ Automate configuration and deployment workflows
✅ Monitor & observe load balancer health and performance
✅ Scale applications horizontally with confidence
✅ Make informed decisions between Nginx and HAProxy
- Basic Linux command-line knowledge
- Understanding of networking concepts (TCP/IP, DNS, HTTP)
- Familiarity with Docker (recommended)
- Text editor skills (vim, nano, or any editor)
- Linux environment (Ubuntu/RHEL/Debian)
- Docker & Docker Compose
- curl, wget for testing
- Optional: Kubernetes cluster for advanced labs
Each module contains:
- Theory: Detailed explanations with examples
- Configuration samples: Real-world configurations
- Diagrams: Architecture and process flow illustrations
- Labs: Hands-on exercises
- Best practices: Production-ready recommendations
- Troubleshooting guides: Common issues and solutions
Start with module-01-fundamentals.md and progress sequentially through the modules. Each module builds upon concepts from previous modules.
Happy Learning! 🎉