Blue/green deployments are a strategy to deploy a new version of an application. They work by starting an entirely new instance of the application, and then routing traffic over to it. ...

Linters are programs that look at a program's source code and find problems automatically. They are a common feature of pull request automation because they ensure that "obvious" bugs do not make it to production. ...

DevOps is a methodology that helps engineering teams build better products by continuously integrating user feedback. ...

Rolling deployments are a strategy to deploy a new version of an application without causing downtime. They work by creating a single instance of the new version of an application, then shutting off one instance of the old version until all instances have been upgraded. ...

Autoscaling automates horizontal scaling to ensure that the number of workers is proportional to the load on the system. ...

The core idea for serverless is to specify a strategy for creating new webservers, instead of starting them yourself. That way if your product gets a huge burst of traffic, your cloud provider can start many copies of the webserver, and turn them off as the traffic subsides. ...

Ephemeral environments are temporary deployments that contain a self-contained version of your application, generally for every feature branch. ...

If you need a publish/subscribe or job server at any point in your project, try using Postgres. It'll give you lots of data integrity and performance guarantees, and it doesn't require you or your team learning any new technology. ...

Continuous Integration (CI) lets you define tests to run before any code is merged - in practice, this means that you can make sure that nothing breaks in response to a change. A lesser-known benefit of CI is that it helps other developers set up the software with any required dependencies. ...