How is memory allocated on the heap?

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Understanding Java Object Creation Behind the Scenes - JVM Internals Series

Welcome to The Geek Neto's JVM Internals Series, hosted by Pebble. In this episode, we delve into the intricate workings behind Java object creation. We explore the JVM's heap memory structure, the roles of the young and old generations, and the function of Eden space and survivor spaces. Learn how heap allocation, thread-local allocation buffers (T-LAB), and garbage collection cycles contribute to efficient memory management. Discover why object creation can be both fast and slow, depending on available memory and the necessity of T-LAB synchronization. This episode is a must-watch for anyone looking to enhance their understanding of JVM memory dynamics and object allocation intricacies.

Chapters:
00:00 Introduction to JVM Internals
00:40 Heap Memory Structure
02:36 Object Creation Process
04:36 Thread Local Allocation Buffers (TLAB)
07:06 Challenges in Object Allocation
07:42 Importance of Garbage Collection
15:05 Understanding Heap Words
17:18 Code Walkthrough: Memory Allocation
23:32 Conclusion and Next Steps

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#Java #JVM #Object #Heap #GarbageCollection #OutofMemory #JVMInternals #Kotlin #Scala