G1 GC is an adaptive garbage collection algorithm that has become the default GC algorithm since Java 9.
jstat is a simple utility tool, that is present in JDK to provide JVM performance-related statistics like garbage collection, compilation activities.
Full GC in JVM is crucial for memory management but can severely impact application performance due to high CPU consumption and application thread pauses. Consecutive full GCs typically indicate insufficient heap size allocation. Solutions include increasing JVM heap size, enhancing Perm Gen/metaspace size, or adding more JVM instances. Validation is essential.
Here are few Java Garbage Collection questions that may help in your next interview. What are different regions in JVM memory?