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Displaying posts with tag: data (reset)
Configuring MySQL Cluster Data Nodes

In my previous blog post, I discussed the enhanced performance and scalability delivered by extensions to the multi-threaded data nodes in MySQL Cluster 7.2. In this post, I’ll share best practices on the configuration of data nodes to achieve optimum performance on the latest generations of multi-core, multi-thread CPU designs.

Configuring the Data Nodes

The configuration of data node threads can be managed in two ways via the config.ini file:

- Simply set MaxNoOfExecutionThreads to the appropriate number of threads to be run in the data node, based on the number of threads presented by the processors used in the host or VM.

- Use the new ThreadConfig variable that enables users to configure both the number of each thread type to use and …

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MySQL Cluster 7.2: Over 8x Higher Performance than Cluster 7.1


The scalability enhancements delivered by extensions to multi-threaded data nodes enables MySQL Cluster 7.2 to deliver over 8x higher performance than the previous MySQL Cluster 7.1 release on a recent benchmark

What’s New in MySQL Cluster 7.2

MySQL Cluster 7.2 was released as GA (Generally Available) in February 2012, delivering many enhancements to performance on complex queries, new NoSQL Key / Value API, cross-data center replication and ease-of-use. These enhancements are summarized in the Figure below, and detailed in the MySQL Cluster New Features whitepaper

Figure 1: Next Generation Web Services, Cross Data Center Replication and Ease-of-Use

Once of the key enhancements delivered in MySQL …

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Can the People's House become a social platform for the people?

InSourceCode developers work on "Madison" with volunteers.

There wasn't a great deal of hacking, at least in the traditional sense, at the "first congressional hackathon." Given the general shiver that the word still evokes in many a Washingtonian in 2011, that might be for the best. The attendees gathered together in the halls of the United States House of Representatives didn't create a more interactive visualization of how laws are made or a mobile health app. As open government advocate Carl Malamud observed, the "hack" felt like something even rarer in the "Age of the App for That:"

Impressed @MattLira pulled off a truly bipartisan tech event on the hill. …

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Visualization of the Week: A better U.S. migration map

Jon Bruner's "American Migration" visualization, based on IRS data, demonstrates how "Americans are enormously mobile: 37.5 million people moved from one house to another last year, with 4.3 million of them moving between states." Bruner's interactive map lets you click on a specific county and see both the immigration and emigration data for that location — where folks move from and where they move to.

Screenshot from the "American Migration" visualization (click for full interactive version).

As …

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CAOS Theory Podcast 2011.11.11

Topics for this podcast:

*Continuent extends MySQL replication to Oracle Database
*CFEngine updates server automation software
*Devops moving mainstream
*Neo Technology integrates with Spring
*451 CAOS report from Hadoop World

iTunes or direct download (26:56, 4.6MB)

Oracle's NoSQL

Oracle's turn-about announcement of a NoSQL product wasn't really surprising. When Oracle spends time and effort putting down a technology, you can bet that its secretly impressed, and trying to re-implement it in its back room. So Oracle's paper "Debunking the NoSQL Hype" should really have been read as a backhanded product announcement. (By the way, don't click that link; the paper appears to have been taken down. Surprise.)

I have to agree with DataStax and other developers in the NoSQL movement: Oracle's announcement is a …

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Building data startups: Fast, big, and focused

This is a written follow-up to a talk presented at a recent Strata online event.

A new breed of startup is emerging, built to take advantage of the rising tides of data across a variety of verticals and the maturing ecosystem of tools for its large-scale analysis.

These are data startups, and they are the sumo wrestlers on the startup stage. The weight of data is a source of their competitive advantage. But like their sumo mentors, size alone is not enough. The most successful of data startups must be fast (with data), big (with analytics), and focused (with services).

Setting the stage: The attack of the exponentials

The question of why this style of startup is arising today, versus a decade …

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An iTunes model for data

As we move toward a data economy, can we take the digital content model and apply it to data acquisition and sales? That's a suggestion that Gil Elbaz (@gilelbaz), CEO and co-founder of the data platform Factual made in passing at his recent talk at Web 2.0 Expo.

Elbaz spoke about some of the hurdles that startups face with big data — not just the question of storage, but the question of access. But as he addressed the emerging data economy, Elbaz said we will likely see novel access methods and new marketplaces for data. Startups will be able to build value-added services on top of big data, rather than having to worry about gathering and storing the data …

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Uniform APIs for the data web

The elmcity service connects to a half-dozen other services, including Eventful, Upcoming, EventBrite, Facebook, Delicious, and Yahoo. It's nice that each of these services provides an API that enables elmcity to read their data. It would be even nicer, though, if elmcity didn't have to query, navigate, and interpret the results of each of these APIs in different ways.

For example, the elmcity service asks the same question of Eventful, Upcoming, and EventBrite: "What are the titles, dates, times, locations, and URLs of recent events within radius R of location L?" It has to ask that question three different ways, and then interpret the answers three different ways. Can we imagine a more frictionless approach?

I can. Here's how the question might be asked in a general way using the Open Data Protocol (OData):

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What VMware's Cloud Foundry announcement is about

I chatted today about VMware's Cloud Foundry with Roger Bodamer, the EVP of products and technology at 10Gen. 10Gen's MongoDB is one of three back-ends (along with MySQL and Redis) supported from the start by Cloud Foundry.

If I understand Cloud Foundry and VMware's declared "Open PaaS" strategy, it should fill a gap in services. Suppose you are a developer who wants to loosen the bonds between your programs and the hardware they run on, for the sake of flexibility, fast ramp-up, or cost savings. Your choices are:

An IaaS (Infrastructure as a Service) product, which hands you an emulation of bare metal where you run an appliance (which you may need to build up yourself) combining an operating system, application, and related services such as DNS, firewall, and a …

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