Advanced Troubleshooting

Advanced Debugging Methodologies

What you Need to Know
- Scientific Method for Complex Issues
  - Hypothesis-driven debugging approach for systematic problem-solving
  - Root cause analysis (RCA) framework using 5 Whys and fishbone diagrams
  - Advanced log analysis techniques for pattern recognition and anomaly detection
  - Resources:
    - Root Cause Analysis Guide - ASQ - Professional RCA methodologies and techniques
    - Debugging Techniques - Google SRE - Scientific approach to troubleshooting complex systems
    - Log Analysis Best Practices - Splunk - Advanced log investigation and pattern recognition
- Complex System Debugging
  - Multi-system integration problem diagnosis and resolution
  - Distributed system troubleshooting across microservices architectures
  - Performance bottleneck identification and optimization strategies
  - Resources:
    - Distributed Systems Debugging - Martin Fowler - Microservices troubleshooting strategies
    - System Design Debugging - High Scalability - Real-world complex system analysis
    - Troubleshooting Distributed Systems - O'Reilly - Advanced debugging techniques

What you Need to Know
- Application Performance Monitoring (APM)
  - Performance metrics collection and analysis (response time, throughput, error rates)
  - APM tools usage for application performance monitoring and optimization
  - Load testing and capacity planning for scalable systems
  - Resources:
    - Application Performance Monitoring Guide - New Relic - Comprehensive APM strategies and implementation
    - Performance Testing Guide - LoadRunner - Load testing methodologies and best practices
    - Web Performance Optimization - Google Developers - Performance optimization techniques and tools
- System Performance Optimization
  - CPU, memory, disk, and network performance analysis and tuning
  - Database performance optimization and query tuning techniques
  - Caching strategies and content delivery network (CDN) optimization
  - Resources:
    - Linux Performance Analysis - Brendan Gregg - Comprehensive system performance analysis tools and techniques
    - Database Performance Tuning - Oracle - Professional database optimization strategies
    - Web Performance Best Practices - Mozilla - Frontend and backend performance optimization

What you Need to Know
- Security Fundamentals for Support Engineers
  - Security incident identification, classification, and initial response procedures
  - Log analysis for security events and threat detection techniques
  - Vulnerability assessment and security best practices implementation
  - Resources:
    - CompTIA Security+ Training - Professor Messer - Comprehensive security fundamentals and incident response
    - NIST Cybersecurity Framework - Industry-standard security framework and incident response guidelines
    - OWASP Security Testing Guide - Web application security testing and vulnerability assessment
- Incident Response and Forensics
  - Security incident response procedures and communication protocols
  - Digital forensics basics for evidence collection and analysis
  - Post-incident analysis and security improvement recommendations
  - Resources:
    - Incident Response Guide - SANS - Professional incident response methodologies and procedures
    - Digital Forensics Basics - NIST - Computer forensics guidelines and best practices
    - Security Incident Communication - CISA - Government guidelines for incident response communication

What you Need to Know
- Three Pillars of Observability
  - Metrics collection and analysis for system health monitoring
  - Logging strategies for comprehensive system visibility and debugging
  - Distributed tracing for request flow analysis across microservices
  - Resources:
    - Observability Engineering - O'Reilly - Comprehensive observability strategies and implementation
    - Prometheus Monitoring Guide - Metrics collection and monitoring system setup
    - Distributed Tracing Guide - Jaeger - Request tracing and performance analysis
- Alerting and Incident Management
  - Alert configuration and escalation procedures for proactive monitoring
  - Incident management workflows and communication strategies
  - SLA/SLO monitoring and performance target management
  - Resources:
    - Site Reliability Engineering - Google - SRE practices for monitoring, alerting, and incident management
    - Incident Management Best Practices - PagerDuty - Professional incident response and communication
    - Alerting Best Practices - Grafana - Alert configuration and management strategies

What you Need to Know
- Microservices and Distributed System Troubleshooting
  - Service mesh debugging and inter-service communication analysis
  - API gateway troubleshooting and request routing issues
  - Container orchestration debugging (Docker, Kubernetes) and networking issues
  - Resources:
    - Microservices Debugging Guide - Martin Fowler - Testing and debugging strategies for microservices
    - Kubernetes Troubleshooting Guide - Container orchestration debugging and problem resolution
    - Service Mesh Debugging - Istio - Service mesh troubleshooting and configuration issues
- Third-Party Integration and Database Issues
  - API integration debugging and external service dependency management
  - Database connection pooling, replication, and performance issues
  - Message queue and event-driven architecture troubleshooting
  - Resources:
    - API Integration Best Practices - Postman - API debugging and integration testing strategies
    - Database Replication Troubleshooting - MySQL - Database synchronization and performance issues
    - Message Queue Debugging - RabbitMQ - Event-driven system troubleshooting and optimization

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