Optimizing memory use in Java applications, garbage collectors

Abstract

Java applications are diverse, depending by use case, exist application that use small amount of memory till application that use huge amount, tens or hundreds of gigabits. Java Virtual Machine is designed to automatically manage memory for applications. Even in this case due diversity of hardware, software that coexist on the same system and applications itself, these automatic decision need to be accompanied by developer or system administrator to triage optimal memory use. After developer big role to write optimum code from memory allocation perspective , optimizing memory use at Java Virtual Machine and application level become in last year's one of the most important task. This is explained in special due increased demand in applications scalability.

Keywords

• Java Virtual Machine
• garbage collector
• Concurrent Mark Sweep (CMS)
• G1 GC
• Shenandoah an Ultra-Low-Pause-Time Garbage Collector