Yet another MongoDB Map Reduce tutorial
From the post:
As the title says, this is yet-another-tutorial on Map Reduce using MongoDB. But two things that are different here:
1. A problem solving approach is used, so we’ll take a problem, solve it in SQL first and then discuss Map Reduce.
2. Lots of diagrams, so you’ll hopefully better understand how Map Reduce works.
First noticed on Alex Popescu’s myNoSQL blog.