Using Go's auto-reconnecting MySQL client libraries

I’ve been doing a little bit of programming in Go recently, and really enjoying it. It’s an awesome language with really solid libraries. It reminds me a lot of the .NET framework in that it’s well-thought-out, but the Go language itself is a lot smaller, less formal, and a lot more expressive than I ever found C# to be. And that’s saying a lot – C# was my previous favorite language, along with the occasional Java, C++, Python, JavaScript, and – gasp – Visual Basic 6. Go beats them all.

But I digress. I’m writing Go applications that talk to MySQL. Some of them talk to the database in read-only ways, and I just wanted to share this neat little nugget about the MyMySQL client libraries (pure-Go implementation; not a wrapper around a C library). One of its features, which you can enable optionally, is autorc. This stands for auto-reconnect to the server. It’s done very smartly. In fact, you don’t even have to connect at all; you just query the server, and the connection either opens or reopens. I’ve tested it and it’s really working well.

This has removed a large pile of smelly code from my application. It’s awesome. That’s all, folks!


About The Author

Baron is the founder and CEO of VividCortex. He is the author of High Performance MySQL and many open-source tools for performance analysis, monitoring, and system administration. Baron contributes to various database communities such as Oracle, PostgreSQL, Redis and MongoDB.


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