Serverless Functions — Some Like It AOT! by David Delabassee

This post explains how Fn users can use GraalVM and the benefits GraalVM and its Ahead-of-Time (AOT) compiler bring to Serverless Java functions.

Introduction

Fn Project is an open-source, container-native, polyglot FaaS (Function as a Service) platform.

Fn is open-source, one can run Fn on-premises and/or in the cloud; running Fn on a laptop is also convenient for experimentation and development.

Fn is container-native as it leverages Docker. In a nutshell, serverless functions are automatically wrapped into Docker container images (but advanced users can also provide their own Dockerfile!). Fn will take care of all the plumbing, from the creation of the function Docker image to the interaction between the function and the Fn platform to the scaling of this same function, etc.

Finally, Fn is polyglot as it offers multiple FDKs (Function Development Kit) to easily write serverless functions using popular languages such as Java, Go, Node, etc. And given that Fn uses Docker under the hood, it is also trivial to add support for additional languages. Read the complete article here.

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