Скачать или смотреть Optimizing JVM at Alibaba, for e-commerce apps running on 100,000+ servers with San Hong Li

On Nov 11, 2016, Alibaba smashed its own online transaction record at the world's largest online shopping event (known as 11.11), by processing 175,000 online ordering transactions per second. Many Alibaba’s e-Commerce applications are written in Java. To cater for the specific needs to run these applications, we identified the requirements and optimized these features on the customized version of HotSpot (OpenJDK based). In this presentation, we will how we characterize our workloads to identify such needs, and how we customize and optimize HotSpot for our Java applications. We identified three specific features useful for our needs: (1) put multiple containers into one JVM instance, which allows to deploy many small Java applications in large scale, across data centers, (2) use coroutines (from Da Vinci Machine project) to reduce context switches, and (3) implement quick Java warmup to obviate the need for "warming-up" occurred in initialization phase of the eCommerce applications