GO @ Aruba Networks

[Anoop K]

Go is used in the Aruba Networks ClearPass Access Management System (http://www.arubanetworks.com/products/clearpass/). The ClearPass system is deployed as a cluster of nodes providing various access management services. In the past we have used C++/Java reactor based patterns and python eventlet+ZMQ for writing concurrent network services.

Some of the problems we saw with the existing model:

• Reactor/callback based concurrency leads to complex code.
  
• Dealing with third party libraries that may not provide an asynchronous interface
  
• Eventlet+ZMQ (to circumvent GIL) is a hacky alternative and has performance issues. Running multiple process means each of the process need to hold a copy of config, caches and other data structures to process requests. Each of these processes also need to be updated on change.

We were looking for a better alternative and found GO. Following are some of the properties which made GO a good choice for our use cases:

• Lightweight language with minimal set of concepts.
  
• Simple concurrency primitives to efficiently use multiple cores.
  
• Compilation speed.
  
• Error handling (No exceptions).
  
• Low memory usage compared to Java/Python.
  

Thanks

Anoop

[Kevin Gillette]

Sounds great!

[Eric Palmer]

Anoop,

Thanks so much. 

Sent from my iPhone

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[Adnaan Badr]

Hey Anoop, by any chance do you work out of the Bangalore office? If yes, it would be great to have someone talk about your product at the local meetup : http://www.meetup.com/Golang-India. We are planning to have another next month.