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1469 high scalability-2013-06-03-GOV.UK - Not Your Father's Stack


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Introduction: I'm not sure what I was expecting the stack  GOV.UK used at launch  to look like. Maybe some messenger owls and lots of cobwebs? But not so at all. So much not so I thought any organization looking at their own stack for ideas could learn something from the considered choices of others. The diversity of technologies used was surprising. They use "at least five different programming languages, three separate database types, two versions of an operating system." Some may think of this as a weakness, but they think it a strength: The reason we operate such a diverse ecosystem is that we are focused on solving real problems. Our first task is to understand the problem or need we are solving and then to choose the best tool for the job. If we restrict ourselves to moulding the need to the tools we already have, then we risk not solving the initial problem in the best way possible for the user. By restricting software diversity or enforcing rigid organisational standards on a project,


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1 I'm not sure what I was expecting the stack  GOV. [sent-1, score-0.078]

2 So much not so I thought any organization looking at their own stack for ideas could learn something from the considered choices of others. [sent-5, score-0.086]

3 The diversity of technologies used was surprising. [sent-6, score-0.128]

4 They use "at least five different programming languages, three separate database types, two versions of an operating system. [sent-7, score-0.137]

5 " Some may think of this as a weakness, but they think it a strength: The reason we operate such a diverse ecosystem is that we are focused on solving real problems. [sent-8, score-0.139]

6 Our first task is to understand the problem or need we are solving and then to choose the best tool for the job. [sent-9, score-0.139]

7 If we restrict ourselves to moulding the need to the tools we already have, then we risk not solving the initial problem in the best way possible for the user. [sent-10, score-0.229]

8 By restricting software diversity or enforcing rigid organisational standards on a project, there is a possibility of descending into a cargo cult, where we simply repeat the same patterns and mistakes in everything we make. [sent-11, score-0.5]

9 This "use the best tool no matter what" policy is outlined in a blog post Benefits of diversity . [sent-12, score-0.223]

10 The only choice that wouldn't be found in a modern startup is the use of Skyscape as their cloud provider. [sent-13, score-0.216]

11 I'm assuming this has to do with legal issues around data sovereignty as this is government site, but otherwise it's all straight out of standard modern web practice: monitoring, dashboards, continuous release, polyglot persistence, distributed source code control, etc. [sent-14, score-0.498]

12 The core of the servers: We’re making use of  Infrastructure As A Service  from  Skyscape We use  Akamai  as our Content Delivery Network Our servers are running  Ubuntu GNU/Linux 10. [sent-18, score-0.137]

13 Servers are managed with  Puppet , using PuppetDB Web serving is handled by  nginx , proxying to  unicorn  for our ruby applications. [sent-21, score-0.736]

14 One of the team wrote  Unicorn Herder  to make Unicorn play nicely with  upstart . [sent-23, score-0.086]

15 js  was used to build a side-by-side browser for reviewing the redirections Applications: The majority of our applications are written in  ruby , based on either  Ruby on Rails  or  Sinatra . [sent-25, score-0.361]

16 A few components are written in  Scala  and built on top of  Play 2. [sent-26, score-0.089]

17 0 We’re running  Mapit from MySociety  which is built on top of  Django Databases and other storage: We use  MongoDB  for most systems, with a few apps also making use of  MySQL . [sent-27, score-0.234]

18 They’re very much our playground and you can find them written in a mixture of Ruby,  Clojure, Node. [sent-32, score-0.177]


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