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zelloworldon Ask HN: How many servers do you manage?

I have been using AWS Elastic Beanstalk for deployments. After the inital config, tt has taken all the work off my plate. Closest to the Heroku 'git push heroku master' experience I have got on AWS.

I have got a few small projects each with 2-3 servers running at a time. Elastic Beanstalk manages load balancers with auto-scaling.

zelloworldon Ask HN: I am writing a book. What would you want to see in it?

As the parent has said, please focus on high-level principles and avoid going deep into the current state of the art.

I have found that the only transferable knowledge I have over years of programming, are the language-agnostic high-level / 'core' principles

zelloworldon Ask HN: Would you use a “git for data”?

Or something like Datomic (http://www.datomic.com/)

zelloworldon Apply HN: Patron – Uber for the Service Industry

If a customer gets to know a good service provider via you, e.g. a house cleaner, they are likely to create a direct relationship with him/her, and skip going via your app the next time they need a cleaner. How are you going to get repeat customer orders for the same kind of service, i.e. house cleaning ?

AFAIK, this is one of the issues HomeJoy faced.