Mongo in Flatland

  • MongoDB: The Definitive Guide 2nd Edition is Out!
  • First Two Weeks at Google
  • Stock Option Basics
  • Recruiting in all the wrong places
  • Programming a State Machine
  • Mad Art Skillz
  • Finished The Definitive Guide
  • Databases & Dragons
  • Guide to Tech Interviews
  • Goodbye 10gen, Hello Google
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  • MongoDB Puzzlers #1
  • Humans are difficult
  • Introducing Noodlin – A Brainstorming App
  • MongoDB changing default: now write errors are reported
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  • How MongoDB’s Journaling Works
  • Go Get a Hot Water Bottle
  • ––thursday #7: git-new-workdir
  • How to Make Your First MongoDB Commit
  • A Neat C Preprocessor Trick
  • Call for Schemas
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  • Controlling Collection Distribution
  • Summer Reading Blogroll
  • Replica Set Internals Part V: Initial Sync
  • Good Night, Westley: Time-To-Live Collections
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  • ––thursday #6: using git over ssh
  • Replica Set Internals Bootcamp Part III: Reconfiguring
  • 10 Kindle Apps for the Non-Existent Developer API
  • ––thursday #5: diagnosing high readahead
  • Replica Set Internals Bootcamp Part IV: Syncing
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  • ––thursday #4: blockdev
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  • ––thursday #2: diff ‘n patch
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  • And now, for something completely different
  • Replica Set Internals Bootcamp: Part I – Elections
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  • SQL to MongoDB: An Updated Mapping
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  • Getting Started with MMS
  • More PHP Internals: References
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  • The Scripting Language of Databases
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  • A Short eBook on Scaling MongoDB
  • Why Command Helpers Suck
  • How to Use Replica Set Rollbacks
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  • How I Became a Programmer
  • Firesheep: Internet Snooping made Easy
  • Bending the Oplog to Your Will
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  • Getting to Know Your Oplog
  • Replication Internals
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  • Writing MongoDB: The Definitive Guide
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  • Oh, the Mistakes I’ve Seen
  • A Quick Intro to mongosniff
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  • History of MongoDB
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  • Sharding and Replica Sets Illustrated
  • Part 3: Replica Sets in the Wild
  • Replica Sets Part 2: What are Replica Sets?
  • Replica Sets Part 1: Master-Slave is so 2009
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  • Bug Reporting: A How-To
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  • Mongo in Flatland

    Wednesday, June 8th, 2011

    MongoDB’s geospatial indexing lets you use a collection as a map. It works differently than “normal” indexing, but there’s actually a nice, visual way to see what geospatial indexing does. Let’s say we have a 16×16 map; something that looks like this: All of the coordinates in our map (as described above) are somewhere between [...]

    kristina chodorow's blog