Designing Response Scales in an Applied Setting Form

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hey everyone this is kamran and in this lesson we're going to talk about the basics of system design we're going to take a hypothetical example of an application and we're going to see how we can scale it from a limited number of users to support a significant number of users on the website we're also going to look at some of the issues that can happen in a production application and see how we can fix them let's say that we are building a notes application that lets the users to create read update and delete the notes it's a simple react application that talks to a node.js api and everything is stored in the postgre database let's say that our application is ready and now it's time to deploy it to the server so that people can use it our initial setup can look like this let's say that we took the droplet on the digitalocean hourly node so we have just one server it's running a linux operating system and our application and database are running on the same server our users interact wit