Wrap-up

Optimizing Code in Java

Pavlos Kosmetatatos

Lead Engineer @Wealthyhood

Chapter 1: Fundamentals of code performance

• Big-O Notation
  • Time Complexity
  • Space Complexity
• Data Structure Selection
  • HashSet
  • HashMap

Chapter 2: Measuring code performance

• System.nanoTime() for precise timing
• JVM Architecture
• Performance Metrics
  • Runtime.getRuntime() for memory tracking
  • ThreadMXBean for CPU analysis

Chapter 3: Improving code performance

• Multi-threading Fundamentals
  • Parallel streams
  • ExecutorService
• Caching Strategies
  • Jedis (Redis)
• Optimization Patterns
  • Singleton pattern implementation
  • Lazy vs eager initialization

Thank you!

Optimizing Code in Java