Discovering JFR: A Journey into Modern Java Profiling Excellence
Symptom: memory usage drifts under real production load. Constraint: profiling cannot degrade latency or throughput. Solution: Java Flight Recorder (JFR) — the built‑in, low‑overhead recorder that captures CPU, memory, GC, I/O, and custom events from live systems with typically under 2% impact.
With JFR, production evidence replaces g...
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Module 2: Hands-on Profiling with System Prompts
Mastering the Interactive Profiling Script and Evidence Collection
⏱️ Duration: 3 hours
🎯 Learning Objectives:
- Master the @161-java-profiling-detect system prompt and its 21 profiling options
- Learn problem-driven profiling strategies for different performance issues
- Understand flamegraph interpretation and visual analysis techniques
- Generate comprehensive profiling evidence under realistic...
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Module 1: Memory Leak Foundations and Detection Setup
Understanding Memory Leaks and Building Detection Infrastructure
⏱️ Duration: 2 hours
🎯 Learning Objectives:
- Understand what memory leaks are and why they're critical in Java applications
- Identify different types of memory leak patterns in enterprise applications
- Explore the Spring Boot memory leak demo architecture
- Set up automated profiling infrastructure using system prompts
- Understan...
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Mastering Java Memory Leak Detection - Complete Learning Path
🎯 Master Java memory leak detection through hands-on profiling with the Spring Boot memory leak demo
📚 Course Structure
Module 1: Foundations - 2 hours (Focus: Memory leak theory and setup; Key learning: Understanding leak patterns; profiling infrastructure)
Module 2: Profiling - 3 hours (Focus: Hands-on profiling mastery; Key learning: 21 profiling options; flamegraph interpretation)
Module 3:...
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Module 1: Foundations - Project Setup & Build Systems
🎯 Learning Objectives
By the end of this module, you will:
Master Maven best practices using automated system prompts
Configure quality dependencies for enterprise-grade projects
Generate professional documentation automatically
Understand the fundamentals of AI-powered development workflows
Apply system prompts effectively in real-world scenarios
📚 Module Overview
Duration: 4 hours
Difficulty:...
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Module 5: Validation and Comparison
Rigorous Before/After Analysis using @164-java-profiling-compare
⏱️ Duration: 1 hour
🎯 Learning Objectives:
- Master the @164-java-profiling-compare system prompt for rigorous validation
- Generate comprehensive before/after profiling comparisons
- Create quantitative evidence of memory leak resolution
- Document measurable performance improvements
- Establish ongoing monitoring strategies for pro...
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Module 4: Refactoring and Solution Implementation
Implementing Memory Leak Fixes and Validation
⏱️ Duration: 2 hours
🎯 Learning Objectives:
- Implement the prioritized solutions identified in Module 3
- Understand the coco=false configuration pattern for immediate leak resolution
- Understand proper resource lifecycle management patterns
- Validate that fixes are correctly applied and effective
- Set up monitoring and alerting for ongoing protect...
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Module 5: Performance - Optimization & Profiling
🎯 Learning Objectives
By the end of this module, you will:
Create JMeter performance tests using @151-java-performance-jmeter
Profile applications comprehensively using @161-java-profiling-detect
Analyze performance bottlenecks using @162-java-profiling-analyze
Compare performance improvements using @164-java-profiling-compare
Benchmark code with JMH for micro-optimizations
Apply systematic perfo...
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Module 3: Analysis and Evidence Collection
Systematic Analysis using @162-java-profiling-analyze
⏱️ Duration: 2 hours
🎯 Learning Objectives:
- Master the systematic analysis framework from @162-java-profiling-analyze
- Learn to categorize and prioritize performance issues using Impact/Effort scoring
- Create structured documentation following professional templates
- Develop cross-correlation analysis skills for multiple profiling results
...
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