How Alibaba’s ElasticHeap, Wisp2, and ZGC Transform Java Performance for Cloud‑Native Apps

This article explains how Alibaba’s JVM team introduced ElasticHeap, static compilation, Wisp2 coroutines, feedback‑directed optimization, and ZGC to dramatically reduce Java heap usage, startup time, CPU load, and pause times, delivering cloud‑native performance improvements demonstrated during the Double‑11 traffic peak.

ElasticHeapJVMJava

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How Alibaba’s ElasticHeap, Wisp2, and ZGC Transform Java Performance for Cloud‑Native Apps

Alibaba Cloud Developer

Oct 31, 2019 · Backend Development

Why Alibaba’s Wisp2 Makes Java Faster: A Deep Dive into Coroutines and Performance

This article explains how Alibaba’s Wisp2 brings Go‑like coroutine performance to Java by replacing OS thread scheduling, details its design, shows benchmark improvements over traditional thread‑pool models, compares it with Project Loom, and provides practical code snippets for enabling Wisp2 in production.

CoroutinesJavaWisp2

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Why Alibaba’s Wisp2 Makes Java Faster: A Deep Dive into Coroutines and Performance