Cloud Foundry is an open-source platform as a service for deploying and managing web applications. Cloud Foundry is widely used by enterprises who are running applications that are built using Spring, a popular web framework for Java applications, but developers also use Cloud Foundry to manage apps built in Ruby, Node and any other programming language. Cloud Foundry includes routing, message brokering, service discovery, authentication and other application level tooling for building and managing a distributed system. Some of the standard tooling in Cloud Foundry was adopted from Netflix open-source projects, such as Hystrix, which is the circuit breaker system; and Eureka, which is the service discovery server and client.

When a developer deploys their application to Cloud Foundry, the details of what is going on are mostly abstracted away, which is by design. When you’re trying to ship code and iterate quickly for your organization, you don’t want to think about how your application image is being deployed to underlying infrastructure. You don’t want to think about whether you’re deploying a container or a VM, but if you use Cloud Foundry enough, you might have become curious about how Cloud Foundry schedules and runs application code.

BOSH is a component of Cloud Foundry that sits between the infrastructure layer and the application layer. Cloud Foundry can be deployed to any cloud provider because of BOSH’s well-defined interface. BOSH has the abstraction of a stem cell, which is a versioned operating system image wrapped in packaging for whatever infrastructure as a service is running underneath. With BOSH, whenever a VM gets deployed no your underlying infrastructure, that VM gets a BOSH agent. The agent communicates with the centralized component of BOSH called the director. This role of director is the leader of the distributed system.

Rupa Nandi is a director of engineering at Pivotal where she works on Cloud Foundry. In this episode we talked about scheduling an infrastructure, the relationship between Spring and Cloud Foundry and the impact of Kubernetes, which Cloud Foundry has integrated with so that users can run Kubernetes workloads on Cloud Foundry.

I interviewed Rupa at SpringOne Platform, a conference that is organized by Pivotal who, full disclosure, is a sponsor of Software Engineering Daily, and this week’s episode are all conversations from that conference. Whether you like this format or don’t like this format, I would love to get your feedback. We have some big developments coming for Software Engineering Daily in 2018 and we want to have a closer dialogue with the listeners. Please send me an email, jeff@softwareengineeringdaily.com or join our Slack channel. We really want to know what you’re thinking and what your feedback is, what you would like to hear more about, what you’d like to hear less about, who you are.

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