Add article: Canceling MySQL in Go (#2196)

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README.md

@@ -2008,6 +2008,7 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
 * [A Tour of Go](http://tour.golang.org/) - Interactive tour of Go.
 * [Build web application with Golang](https://github.com/astaxie/build-web-application-with-golang) - Golang ebook intro how to build a web app with golang.
 * [Building Go Web Applications and Microservices Using Gin](https://semaphoreci.com/community/tutorials/building-go-web-applications-and-microservices-using-gin) - Get familiar with Gin and find out how it can help you reduce boilerplate code and build a request handling pipeline.
+* [Canceling MySQL](https://medium.com/@rocketlaunchr.cloud/canceling-mysql-in-go-827ed8f83b30) - How to cancel MySQL queries
 * [Games With Go](http://gameswithgo.org/) - A video series teaching programming and game development.
 * [Go By Example](https://gobyexample.com/) - Hands-on introduction to Go using annotated example programs.
 * [Go Cheat Sheet](https://github.com/a8m/go-lang-cheat-sheet) - Go's reference card.