If you don’t know yet, there were major changes by Google in protobuf and gRPC implementation for Go. New version should be better in all means so you should switch as soon as possible, if you are already using these technologies. In this article I am going to focus on Linux variant, but the upgrade procedure should be quite similar on OSX or Windows.
Someone may ask what is so special about serving single-page applications? Well, if you use hash (#) based URL’s like https://yourdomain.com/#/yourroute , there is no problem because browser recognize that this is a default page with some parameters and doesn’t make another request to the server. However, if you want to use non-hash based routes, there is a problem if you try to refresh a non-default route. In this case browser’s default action is to load such URL from the server and there is no such document on the server. For example, if you load your SPA at URL https://yourdomain.com and then you click on another route, you will see in your browser’s URL field something like https://yourdomain.com/yourroute . That works fine unless you try to reload the page. In that case browser doesn’t know this is actually already loaded SPA, but it actually tries to fetch /yourroute URI from server. As there is no such URI on the server, you will usually get the famous 404 error and your application breaks.
This is the first step of my intention to write a series of articles where I would explain some common patterns used in Golang. Let’s start with generator pattern :
1type Generator func() <-chan int Generator is a function or method which returns a sequence of values. In Golang, this usually means returning a channel of values of desired type. In our example, we will return a channel of integers. Let’s see an implementation of this:
Official Golang documentation contains just tar.gz package to be downloaded and installed on Ubuntu Linux, but this is not quite comfortable way because Golang won’t be automatically updated after new release. Fortunatelly, there is trustable PPA that can be used.
