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Interpreting A/B test results: false negatives and power

The Netflix TechBlog

We then used simple thought exercises based on flipping coins to build intuition around false positives and related concepts such as statistical significance, p-values, and confidence intervals. In this post, we’ll do the same for false negatives and the related concept of statistical power.

Testing 202
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Bring Your Own Cloud (BYOC) vs. Dedicated Hosting at ScaleGrid

Scalegrid

In this post, we compare ScaleGrid’s Bring Your Own Cloud (BYOC) plan vs. the standard Dedicated Hosting model to help you determine the best strategy for your MySQL, PostgreSQL, Redis™ and MongoDB® database deployment. These are advanced cloud configurations that allow you to protect your databases from the internet. No problem.

Cloud 242
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Why Browsers Get Built

Alex Russell

This strategy is exemplified by 1990s-era Andreesen's goal to render Windows "a poorly debugged set of device drivers" The idea is that the web is where the action is, and that the browser winning more user Jobs To Be Done follows from increasing the web platform's capability. In some sense it's a confidence-management exercise.

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A Decade of Dynamo: Powering the next wave of high-performance, internet-scale applications

All Things Distributed

The cloud-hosted version would need to be: Scalable – The service would need to support hundreds of thousands, or even millions of AWS customers, each supporting their own internet-scale applications. Today, DynamoDB powers the next wave of high-performance, internet-scale applications that would overburden traditional relational databases.

Internet 130
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Trade-offs under pressure: heuristics and observations of teams resolving internet service outages (Part II)

The Morning Paper

Trade-offs under pressure: heuristics and observations of teams resolving internet service outages , Allspaw, Masters thesis, Lund University 2015. The process tracing exercise included: Examning IRC transcripts from multiple channels. This is part 2 of our look at Allspaw’s 2015 master thesis (here’s part 1 ).

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Taiji: managing global user traffic for large-scale Internet services at the edge

The Morning Paper

Taiji: managing global user traffic for large-scale internet services at the edge Xu et al., Instead, we propose that popular Internet services such as Facebook, Instagram, Twitter, and YouTube leverage their shared communities of users. Our solver employs a local search algorithm using the “best single move” strategy.

Traffic 42
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Frustrating Design Patterns: Disabled Buttons

Smashing Magazine

Is there an issue with your Internet connection? And because something is happening, they usually exercise a good amount of patience first. That seemingly obvious observation might not be obvious at the first glance though. For example, what if you want to uncheck a checkbox but the interface won’t allow you to do so?

Design 145