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Member since Feb 02, 2008, follows 0 people, 3 public groups, 436 public bookmarks (484 total).
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SoftwareDesignDocumentBackend < Uranus < YTWiki about 17 hours ago
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/home/y/share/uranus/<stream-name>/clots
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Brewer's CAP Theorem on 2009-11-29
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I think it's fair to say that the former group haven't taken to CAP Theorem with quite the same gusto as the latter (though they are talking about it). This is because if you have to drop one of consistency, availability, or partition tolerance, many opt to drop consistency which is the raison d'être of the database. The logic. no doubt, is that availability and partition-tolerance keep your money-making application alive, whereas inconsistency just feels like one of those things you can work around with clever design.
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Gilbert and Lynch also prove, using a slight variation on this, that even in a partially-synchronous model (with ordered clocks on each node) atomicity cannot be guaranteed.
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lexanderA » Predictions on the future of NoSQL on 2009-11-29
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Reading about NoSQL databases gives me a feeling of deja-vu. Most of it reads almost exactly like articles about MySQL from the beginning of this decade: “We’re better than competition because we don’t have transactions/triggers/datatype checking/guaranteed consistency/fulltext search/…”. MySQL now has all of those features and NoSQL databases will follow in the same path. Most users will s
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NoSQL: If Only It Was That Easy « Marked As Pertinent on 2009-11-29
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can do sharding by handling it in the client, and therefore, you can’t just start adding new servers and increase your throughput.
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auto-sharding
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Digg the Blog » Blog Archive » Looking to the future with Cassandra on 2009-11-29
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We started thinking seriously about deploying Cassandra in production around three weeks ago. After looking at the site for something that would be a good fit, we settled on green badges. These badges appear on the Digg icon for a story when one of your friends has dugg it. This has been a problematic feature to support as we’ve grown, and corners had to be cut to keep it from breaking. They’re disabled on large pages (such as top in 365) and highly digg stories.
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Non-relational data stores reverse this model completely, because they don’t have the complex read operations of SQL. The model forces you to shift your computation to the writes, while reducing most reads to simple operations – the equivalent of
SELECT * FROM `Table`.
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High Scalability - High Scalability - Stack Overflow Architecture on 2009-11-29
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At low server volume, the key cost driver is not rackspace, power, bandwidth, servers, or software; it is NETWORKING EQUIPMENT. You need a gigabit network between your DB and Web tiers. Between the cloud and your web server, you need firewall, routing, and VPN devices. The moment you add a second web server, you also need a load balancing appliance. The upfront cost of these devices can easily be 2x the cost of a handful of servers.
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Hundreds and hundreds of "tables" and custom fields are mapped into the data table.
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- Things to do in London with ckfree and Time Out London on 2009-11-28
- Learning how bugs fly | Video | Reuters.com on 2009-11-20
- Nation's Girlfriends Unveil New Economic Plan: 'Let's Move In Together' | The Onion - America's Finest News Source on 2009-11-20
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Favit :: Reader on 2009-11-19
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What we have now are a lot features masquerading as products. Over time they will merge together to become more full featured offerings.
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