Garbage Collection is automatic in modern platforms like JVM and ART, but it isn't free. It can lead to unpleasant user experiences, increased cloud hosting costs, and risks to application availability. Frequent pauses during garbage collection affect user transactions and can increase expenses due to higher CPU usage. Optimizing settings is essential.
Enabling GC logging enhances application performance by reducing response time, aiding in memory issue troubleshooting, forecasting outages, and improving capacity planning without significant overhead. For Java 8 and below, specific JVM arguments enable logging, and for Java 9 and above, alternative commands are used. Analyzing GC logs requires tools like GCeasy due to varied formats.