The mgo driver makes it easy to use native types that represent the documents stored in our collections by using tags. BuoyStation represents the main document and Buo圜ondition and BuoyLocation are embedded documents. The structures represent the data that we are going to retrieve and unmarshal from our query. Let’s start with the type structures that are defined in the beginning:
Now that you have seen the entire program, we can break it down.
The records are unmarshaled into native Go types and each goroutine logs the number of documents returned: The program launches ten goroutines that individually query all the records from the buoy_stations collection inside the goinggo database. If you have Go and Bazaar installed on your machine, you can run the program. The sample program connects to a public MongoDB database I have hosted with MongoLab. I will break down the sample code and explain a few things that seem to be always be a bit confusing to those new to MongoDB and Go. In this post I am going to show you how to write a Go program using the mgo driver to connect and run queries concurrently against a MongoDB database. This is where Go really shines because once you get up to speed, writing programs in Go is fast and fun.
That wouldn’t mean anything if writing code in Go was complicated and as tedious as writing programs in C. Go programs are native binaries and the Go tooling is constantly improving to create binaries that run as fast as equivalent C programs. MongoDB and Go let us build scalable software on many different operating systems and architectures, without the need to install any frameworks or runtime environments. The talk centers around the mgo driver and how MongoDB and Go really work well together to build highly scalable and concurrent software. Both Gustavo and Steve will be talking at GopherCon 2014 in April about " Painless Data Storage With MongoDB and Go ". Steve Francia, the head of the drivers team at MongoDB Inc, took notice and offered support. This driver has been externally developed by Gustavo Niemeyer from Canonical, and eventually One such driver is the MongoDB Go driver which is called mgo. MongoDB supports many different programming languages thanks to a great set of drivers. It provides a beginners view for using the Go mgo driver against a MongoDB database. If you are attending GopherCon 2014 or plan to watch the videos once they are released, this article will prepare you for the talk by Gustavo Niemeyer and Steve Francia.
0 kommentar(er)
