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MongoDB expert
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Kristina blogs at:
https://www.snailinaturtleneck.com
June 08 2011
MongoDB’s geospatial indexing lets you use a collection as a map. MongoDB’s geospatial indexing works differently than “normal” indexing, but there’s actually a nice, visual way to see what it does. Let’s say we have a 16×16 map; something that looks like this: All of the coordinates in our map… read moreMay 05 2011
About a year ago, Mike Dirolf drew an enormous circle covering a sheet of paper. “Here are the people who use databases,” he said, “and here are the people who have even heard of NoSQL,” and he drew a circle this big: ? . I think that interest has grown… read moreA finite simple group of order two
April 30 2011
Andrew and I just returned from our honeymoon in the mountains, so I am now going to wax boring about how awesome it was. We really love rock climbing, so we went on a lot of rock scrambles. Rock scrambles involve “scrambling” around rocks, boulders, little cliffs, and crevices. We… read moreSimulating Network Paritions with mongobridge
April 20 2011
Note: mongobridge does not come with the MongoDB binaries, but you can build it by getting the source code and running scons mongobridge. Let’s say we have a replica set with members (M1, M2, and M3) and we want to see what happens when M1 and M3 cannot reach each… read moreTrying Out Replica Set Priorities
April 13 2011
As promised in an earlier post, replica set priorities for MongoDB are now committed and will be available in 1.9.0, which should be coming out soon. Priorities allow you to give weights to the servers, saying, “I want server X to be primary whenever possible.” Priorities can range from 0.0-100.0.… read moreThe Scripting Language of Databases
April 06 2011
One of the most common questions non-users ask is “Why should I use MongoDB?” There are a bunch of fancy answers: you can scale it (webscale!), you can use it for MapReduce, you can store files in it. Those things are all true, but every database worth its salt can… read moreLorenz University: I can has degree?
March 20 2011
Misadventures in HR (an hilarious blog about… HR) mentioned Lorenz University, a degree mill. I’d never heard of a degree mill before, so I wanted to see how legit it looked from a computer scientist’s point of view. whois Every site on the internet has to register contact information the… read moreImplementing Replica Set Priorities
March 07 2011
Replica set priorities will, very shortly, be allowed to vary between 0.0 and 100.0. The member with the highest priority that can reach a majority of the set will be elected master. (The change is done and works, but is being held up by 1.8.0… look for it after that… read moreMultimedia
Webcast: Scaling with MongoDB
September 17, 2010
Duration: Approximately 60 minutes. Cost: Free MongoDB's architecture features built-in support for horizontal scalability, and high availability through replica sets. Auto-sharding allows users to easily distribute data across many nodes. Replica...
Webcast: How Sharding Works
February 04, 2011
Duration: Approximately 60 minutes. Cost: Free This talk is a combination of whitepaper and Magic School Bus tour of how MongoDB scales across multiple machines. For applications that outgrow the resources of a single database server, MongoDB can...
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