Innovations for Java running in containers

This blog is co-authored by Hang Shao, Marius Pirvu, Tobi Ajila and Vijay Sundaresan. 1.     Introduction Over a decade ago, the common form of deployment was large monolithic applications that handled all the business logic. In this model applications typically had long deployment windows and they were typically deployed on large on-prem server farms. Since…

THE MULTI-LAYER SHARED CLASS CACHE FOR DOCKER

With contributions from Hang Shao. By now you’ve no doubt heard of Eclipse OpenJ9 and its reputation for starting applications faster and using less memory. If not, you should visit the Eclipse OpenJ9 Performance page. The Shared Class Cache (SCC) capability is one of the main reasons why OpenJ9 can start faster and use less…

Comparing Jenkins startup in Docker

Containers are increasingly becoming the preferred way of deploying applications. They facilitate consistency between development and operations, allow for an easy way to build layers for reuse, and make it very easy for users to try out an application without having to deal with setting up all the prerequisites. However, just because applications have moved…

Ahead Of Time Compilation: Validation

This post finally gets to the much alluded to topic of Validation. As mentioned in a previous post, Validation is one of the two actions the JVM must perform to generate and execute AOT code; the other is Relocation, which is described here. What is Validation? In the context of AOT, Validation is the process of…

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Ahead Of Time Compilation: Relocation

This post describes Relocation; as mentioned in the previous post, it is one of the two actions the JVM must perform to generate and execute AOT code. Because Validations are a bit more involved, we first focus on the task of relocating code before delving into the complexities and subtleties of validations. What is Relocation?…

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