Senior Brother's Insights

Jun 26, 2022 · Backend Development

How ZGC Achieves Sub‑10 ms Pauses and Scalable Memory Management

This article explains ZGC’s evolution from an experimental feature in JDK 11 to a production‑ready collector in JDK 15, detailing its sub‑10 ms pause guarantee, memory‑mapping architecture, colored pointers, region layout, read barriers, and the multi‑phase concurrent collection process that together deliver low‑latency, high‑throughput garbage collection for Java applications.