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10 Newer Entries Showing entries 31 to 40 of 249 10 Older Entries

Displaying posts with tag: Programming (reset)

Could closed core prove a more robust model than open core?
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When participating recently in a sprint held at Google to document four free software projects, I thought about what might have prompted Google to invest in this effort. Their willingness to provide a hotel, work space, and food for some thirty participants, along with staff support all week long, demonstrates their commitment to nurturing open source.

Google is one of several companies for which I'll coin the term "closed core." The code on which they build their business and make their money is secret. (And given the enormous infrastructure it takes to …

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What's New in CFEngine 3: Making System Administration Even More Powerful
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CFEngine is both the oldest and the newest of the popular tools for automating site administration. Mark Burgess invented it as a free software project in 1993, and years later, as deployments in the field outgrew its original design he gave it a complete rethink and developed the powerful concept of promise theory to make it modular and maintainable. In this guise as version 3, CFEngine stands along with two other pieces of free software, Puppet and Chef, as key parts of enterprise computing. Along the way, …

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Developer Week in Review: These things always happen in threes
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Fall is being coy this year in the Northeast. We've been having on and off spells of very mild, almost summer-like weather over the last few weeks. That trend seems to be finally ending, alas, as there is possible snow forecasted for the weekend in New Hampshire. As the old joke goes, if you don't like the weather here, just wait five minutes.

The fall also brings hunting to the area. The annual moose season just concluded (you need to enter a special lottery to get a moose permit), but deer season is just about to open. My son and I won't be participating this year, but we recently purchased the appropriate tools of …

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New algorithm for calculating 95 percentile
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The 95 percentile for query response times is and old concept; Peter and Roland blogged about it in 2008. Since then, MySQL tools have calculated the 95 percentile by collecting all values, either exactly or approximately, and returning all_values[int(number_of_values * 0.95)] (that’s an extreme simplification). But recently I asked myself*: must we save …

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Developer Week in Review: Lion drops pre-installed MySQL
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A busy week at Casa Turner, as the infamous Home Renovations of Doom wrap up, I finish the final chapters of "Developing Enterprise iOS Applications" (buy a copy for all your friends, it's a real page turner!), pack for two weeks of vacation with the family in California (Palm Springs in August, 120 degrees, woohoo!), and celebrate both a birthday and an anniversary.



But never fear, WIR fans, I'll continue to supply the news, even as my MacBook melts in the sun and the buzzards start to circle overhead.

The law of unintended consequences





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NoSQL is What?
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I found myself reading NoSQL is a Premature Optimization a few minutes ago and threw up in my mouth a little. That article is so far off base that I’m not even sure where to start, so I guess I’ll go in order.

In fact, I would argue that starting with NoSQL because you think you might someday have enough traffic and scale to warrant it is a premature optimization, and as such, should be avoided by smaller and even medium sized organizations.  You will have plenty of time to switch to NoSQL as and if it becomes helpful.  Until that time, NoSQL is an …

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Tale of a bug
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This is a tale of the bug lp:798213. The bug report has the initial report, and a summary of the real problem obtained after detailed analysis, but it does not describe the processes of getting from the former to the latter. I thought it would be interesting to document this, as the analysis of this bug was rather tricky and contains several good lessons.

Background

The bug first manifested itself as a sporadic failure in one of our random query generator tests for replication. We run this test after all MariaDB pushes in our …

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Four short links: 7 June 2011
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  1. OMG Text -- a plugin for CSS framework Compass for directional text shadows. (via David Kaneda)
  2. Build a Cheap Bitcoin Mine -- some day it will be revealed that the act of generating a bitcoin token is helping the Russian mafia to crack nuclear missile launch codes and Afghan druglords built the Bitcoin system to destabilize the US dollar.
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Developer Week in Review: Apple devs cry "gimme shelter"
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Another week of industry hijinks has passed, which means it must be time for another edition of the Developer Week in Review.

Apple offers some cover

After developer complaints that Apple was leaving them out to dry, in regards to the Lodsys patent threats being aimed their way, the House of Jobs stepped up to the plate and announced that they considered iOS developers to be covered by the existing licenses granted to Apple by Lodsys for in-game purchases.

This is a bit of a good-news, bad-news story from an …

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Quadrant Framework – rev7 update adds DyGraphs support
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Quick update to the framework that was released yesterday; I’ve added automatic graph generation. I chose DyGraphs due to the quick ability to enable support – the HTML is very quick and simply loads the CSV data. It has the same zooming features of Highcharts without the JS overhead.

Now when you run a load test you will get (in the output directory) a mixture of files: the main cumulative CSV and HTML file for the hostname that was tested, and then one CSV and HTML per report variable that was tested. This means you don’t have to drag the main CSV file into an alternate program or spend time parsing out certain variables one at a time to generate …

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10 Newer Entries Showing entries 31 to 40 of 249 10 Older Entries

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