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Displaying posts with tag: data (reset)

Improving healthcare in Zambia with CouchDB
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A new healthcare project in Zambia is trying to integrate supervisors, clinics, and community healthcare workers (CHW) into a system that can improve patient service and provide more data about the effectiveness of care. Because of the technical challenges in an extreme rural setting, unique solutions are required. According to Cory Zue, chief technology officer of Dimagi, CouchDB went a long way toward keeping a consistent set of records under extreme circumstances. The full story will be laid out in Zue's talk at the upcoming MySQL conference, but here's a sneak peak.



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Broadband availability and speed visualized in new government map
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Today, the United States Department of Commerce's National Telecommunications and Information Administration (NTIA) unveiled a new National Broadband Map, which can be viewed at BroadbandMap.gov.

The map includes more than 25 million searchable records and it incorporates crowdsourced reporting. Built entirely upon Wordpress, the map is also one of the largest implementations of open source and open data in government to date.

Importantly, the data behind the map shows that despite an increase in broadband adoption to 68%, a digital divide persists between citizens who have full access to the rich media of the 2011 Internet and those who are limited by geography or means.

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What is this MySQL file used for?
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MySQL keeps many different files, some contain real data, some contain meta data. Witch ones are important? Witch can your throw away?

This is my attempt to create a quick reference of all the files used by MySQL, whats in them, what can you do if they are missing, what can you do with them.

When I was working for Dell doing Linux support my first words to a customer where “DO YOU HAVE COMPLETE AND VERIFIED BACKUP?” Make one now before you think about doing anything I suggest here.

You should always try to manage your data through a MySQL client.  If things have gone very bad this may not be possible. MySQL may not start. If your file system get corrupt you may have missing files. Sometimes people create other files in the MySQL directory (BAD).  This should help you understand what is safe to remove.

Before you try to work with one of

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HandlerSocket plugin – NoSQL/SQL interactions
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HandlerSocket is cool. But, it turns out there are a few issues.

Justin Swanhart points out HandlerSocket currently lacks atomic operations . Since HandlerSocket uses different connections for reading and writing, you can’t increment/decrement a value without creating a race condition.

Still, the idea of skipping SQL interpretation and just reading the data you know you want is a great one.  Writing data might even be better. But being able to use both SQL and NoSQL could be really wonderful.  What if we could use complex queries to update complex tables and pluck values out as needed.  For example, queries to analyze current weather conditions and produce forecasts that we could then retrieve via a location key? What about updating current condition data

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Strata Gems: DIY personal sensing and automation
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We're publishing a new Strata Gem each day all the way through to December 24. Yesterday's Gem: Turn MySQL into blazing fast NoSQL.

Tomorrow's augmented reality is being built today on mobile devices. The Tasker application for Android is a fun platform for prototyping personal automation and sensing applications. Described modestly as an application which "performs tasks based on contexts," it gives non-programmers access to the sensing and system features of the

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The growing importance of data journalism
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One of the themes from News Foo that continues to resonate with me is the importance of data journalism. That skillset has received renewed attention this winter after Tim Berners-Lee called analyzing data the future of journalism.

When you look at data journalism and the big picture, as USA Today's Anthony DeBarros did at his blog in November, it's clear the recent suite of technologies is part of a continuum of technologically enhanced storytelling that traces back to computer-assisted reporting (CAR).

As DeBarros pointed out,

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Strata Gems: Turn MySQL into blazing fast NoSQL
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We're publishing a new Strata Gem each day all the way through to December 24. Yesterday's Gem: What your inbox knows.

The trend for NoSQL stores such as memcache for fast key-value storage should give us pause for thought: what have regular database vendors been doing all this time? An important new project, HandlerSocket, seeks to leverage MySQL's raw speed for key-value storage.

NoSQL databases offer fast key-value storage for use in backing web applications, but years of work on regular relational

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Why clouds and web services will continue to take over computing
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Series

What are the chances for a free software cloud?

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Strata Gems: Who needs disks anyway?
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We're publishing a new Strata Gem each day all the way through to December 24. Yesterday's Gem: Kinect democratizes augmented reality.

Today's databases are designed for the spinning platter of the hard disk. They take into account that the slowest part of reading data is seeking: physically getting the read head to the part of the disk it needs to be in. But the emergence of cost effective solid state drives (SSD) is changing all those assumptions.

Over the course of 2010, systems designers have been realizing

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Defining clouds, web services, and other remote computing
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Series

What are the chances for a free software cloud?

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10 Newer Entries Showing entries 31 to 40 of 70 10 Older Entries

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