JVM Garbage Collection Logs: How to Read and Interpret Them
Master the art of reading and interpreting JVM Garbage Collection logs to optimize performance, reduce latency, and troubleshoot memory issues effectively
All Tutorials
Curated Java + Spring Boot tutorials with real-world backend patterns and clean examples.
How GC Chooses Which Objects to Collect: Root Reachability Analysis
Learn how Java’s Garbage Collector identifies unreachable objects using root reachability analysis, improving memory efficiency, performance, and reliability
Comparing GC Algorithms: CMS vs G1 vs ZGC vs Shenandoah
Compare CMS, G1, ZGC, and Shenandoah garbage collectors in Java. Learn differences, tuning options, and best use cases for latency and throughput
Shenandoah GC: Low-Pause Garbage Collection in OpenJDK
Learn Shenandoah GC in Java: a low-pause, concurrent garbage collector in OpenJDK. Explore design, tuning, advantages, and production scenarios
ZGC: Sub-Millisecond Pause Garbage Collector Explained
Learn ZGC in Java: a low-latency garbage collector with sub-millisecond pause times. Explore its design, tuning options, and real-world use cases
G1 (Garbage First) Garbage Collector: Modern Default for Java
Learn G1 Garbage Collector in Java. Explore its region-based design, tuning options, advantages over CMS, and why it’s the modern JVM default
CMS (Concurrent Mark Sweep) Garbage Collector Explained
Learn the CMS Garbage Collector in Java. Understand its phases, strengths, weaknesses, and why it was deprecated in favor of G1, ZGC, and Shenandoah
Generational Garbage Collection: Young vs Old Generation Strategy
Understand Generational Garbage Collection in Java. Learn how Young and Old Generations optimize JVM performance, memory efficiency, and GC tuning
Copying and Compacting Collectors Explained
Understand copying and compacting collectors in Java GC. Learn how they reduce fragmentation, improve memory efficiency, and impact JVM performance
Mark-and-Sweep Algorithm: Foundations of Garbage Collection
Learn the Mark-and-Sweep algorithm in Java Garbage Collection. Understand its process, pros, cons, and role in JVM memory management
Finalization in Java: Why finalize() is Deprecated and Alternatives
Learn why finalize() is deprecated in Java, the problems it caused, and modern alternatives like try-with-resources, AutoCloseable, and Cleaner API
Reference Types and GC: Strong, Weak, Soft, and Phantom References
Understand strong, weak, soft, and phantom references in Java. Learn their role in JVM garbage collection, memory optimization, and real-world use cases