18 May 2013

The Ruby Reflector

Topic

Amazon.com

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By Joey of Global Nerdy 1 month ago.
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at Amazon.ca , and USD$2.99 at Amazon.com .

BYOL: Bring Your Own Liabilities

Mobile technologies bring new capabilities, but new complications as well. The CIO article BYOL: Bring Your Own Liabilities points out that the dual nature of BYOD devices — owned by the employee, but used part of the time on behalf of the company (and possibly subsidized) — present some new potential legal issues, whether or not your organization has a formal BYOD program. …

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By Mike Gunderloy of A Fresh Cup 3 days ago.
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By Nathen Harvey of Opscode Blog 11 days ago.
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…virtualization support, create API-to-node attribute importers for Internap and Amazon and integrate with monitoring (sensu/momonitor), metrics (graphite), and provisioning systems (openstack/razor) in order to create a more encompassing infrastructure management dashboard. MoMonitor is a monitoring and alerting system we recently released open source.

MoMonitor is a monitoring and alerting system that integrates with multiple services including umpire, graphite, and sensu. We …

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By 37signals of Signal vs. Noise 2 months ago.
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The hardcover version of REMOTE : Office Not Required , our upcoming book on making remote working work for employers and employees, is now available for pre-order from these top online booksellers:

"REMOTE: Office Not Required" at Amazon.com

"REMOTE: Office Not Required" at Barnes & Noble

"REMOTE: Office Not Required" at 800-CEO-READ

The book is planned for release on October 29th, 2013. eBook versions …

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…how do I even get to the staging environment? What server is it on?". Turns out it's on an Amazon server and you need a special permissions file to be able to access it.

Imagine this process happens 12 months after anybody has ever worked on the project and the last girl to hack on the codebase has long since left the company. Your company has just lost months of her gaining knowledge that you now have to re-acquire. Knowledge that should have been documented somewhere so it wasn't …

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By Mike Perham of Mike Perham 6 months ago.
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…allowing the user to filter their results when searching for products. Here's a category tree from Amazon.com:

So if you have a table which holds those categories, how do you write a SQL query which loads a given category PLUS all child categories below it? The answer is that it's extremely difficult/impossible with standard SQL. Oracle can do it with their SQL "connect by" extension or you can change your tree structure into a nested set .

The awesome_nested_set …

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By Todd Hoff of High Scalability 12 days ago.
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Use Amazon CloudFront Price Class to minimize costs by selecting the right Price Class for your audience to potentially reduce delivery costs by excluding Amazon CloudFront's more expensive edge locations.

Optimize ElastiCache Cluster costs by right sizing cluster node sizes. For different usage scenarios (heavy, moderate, low) their are optimal instances types. Choosing the right type for the right usage scenario saves money.

Amazon Auto Scaling can save …

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On Ruby on Rails Tutorial News 7 months ago.
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tl;dr:

Buy the print edition of the Ruby on Rails Tutorial, 2nd Edition at Amazon.com

Please leave a review at Amazon

This is a quick update on the print edition of the Ruby on Rails Tutorial, 2nd Edition . I've been notified by several readers that, despite the discount I negotiated at a non-Amazon retailer, in fact the print edition of the book is cheapest at Amazon. Having spent a week trying and failing to negotiate a bigger discount, I've …

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By Damien Katz of Damien Katz 15 days ago.
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…the vast majority of applications, it's okay for a failure leading to temporary unavailability. Amazon believes its shopping cart is so important to capture writes it's worth the cost of quorum reads, or inconsistency. Perhaps. But the problems and costs multiply. If you are doing extra reads to achieve high consistency, then you are putting extra load on each machine, requiring extra server hardware and extra networking infrastructure to provide the same baseline performance. All of …

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On Ruby on Rails Tutorial News 7 months ago.
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tl;dr:

Buy the print edition of the Ruby on Rails Tutorial, 2nd Edition at Amazon.com

Please leave a review at Amazon

If you want a Kindle version, buy directly from railstutorial.org

This is a quick update on the print edition of the Ruby on Rails Tutorial, 2nd Edition . I've been notified by several readers that, despite the discount I negotiated at a non-Amazon retailer, in fact the print edition of the book is cheapest at Amazon

railstutorial.org Read