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Snap CI now enables public GitHub repositories to do Continuous Integration(CI) and Continuous Delivery(CD) for free. When doing CD, the goal is to automate the process of deployment and build software in a way that can be deployed to production anytime. To achieve this, we need to figure out a way to deploy the application that doesn't interrupt the users using the system.
Learning about this process will allow you to reduce the frictions and delays for deploying new features and bug fixes to production. Your application needs to change in a way that understands this process. You will learn about application and deployment pipelines and the different ways to deploy.
In this talk we will touch upon some common deployment pipelines. We will cover in detail about how we changed Snap to do deployments that didn't affect our customers, the challenges we faced and some patterns that helped us overcome them. What made this challenging was the data migrations and long running builds of our customers that made it difficult to figure out when to cut over.