The article discusses the System.gc() API call in Java and other languages, clarifying its invocation, use cases, downsides, and detection methods. Invoking System.gc() can halt JVM operations, causing poor user experiences. It also suggests strategies to manage or disable these calls, including using JVM arguments and monitoring GC logs for optimization.
Long GC pauses hinder application performance, impacting SLAs and user experience. Key causes include high object creation rates, undersized young generations, unsuitable GC algorithms, excessive memory swapping, and inadequate GC threads. Solutions involve optimizing object creation, adjusting young generation size, and selecting efficient GC strategies to minimize pauses and enhance stability.