JVM Garbage Collection and G1 GC Fundamentals

Memory management and pause times directly influence the stability and responsiveness of Java applications. Understanding how the Garbage-First (G1) collector operates inside the HotSpot JVM is essential for building efficient, low-latency software. Through clear written explanations and practical configuration examples, this course demystifies JVM memory regions, heap partitioning, and collector mechanics. You will develop a solid conceptual model of G1 GC, compare it with alternative collection strategies, and learn modern diagnostic techniques. What you'll learn: - Understand foundational JVM memory architecture, heap regions, and generational collection concepts - Explore G1 GC internal mechanisms, marking phases, and pause-time target algorithms - Compare G1 GC with other HotSpot collectors to evaluate the right choice for your workload - Configure and tune key JVM runtime parameters for balanced throughput and latency - Analyze modern GC logging flags and metrics to troubleshoot memory pressure and pause spikes You will begin with essential terminology and fundamental memory models before advancing through G1 GC operational phases and practical tuning workflows. This course is designed for developers and engineers new to JVM internals, requiring only a basic familiarity with programming concepts. Start reading today to optimize your application memory management with confidence.