GO @ Aruba Networks

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Anoop K

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Nov 22, 2013, 11:34:39 AM11/22/13
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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

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Nov 22, 2013, 5:07:42 PM11/22/13
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Sounds great!

Eric Palmer

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Nov 22, 2013, 6:01:20 PM11/22/13
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Anoop,

Thanks so much. 

Sent from my iPhone
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Adnaan Badr

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Nov 22, 2013, 7:29:28 PM11/22/13
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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.
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