Tag Archives: mongodb

NoSQL with MongoDB and Ruby Presentation

Posted on November 15, 2010 by Geoff Lane

I presented at the Milwaukee Ruby User’s Group tonight on NoSQL using MongoDB and Ruby. Code Snippets for the Presentation Basic Operations   // insert data db.factories.insert( { name: "Miller", metro: { city: "Milwaukee", state: "WI" } } ); db.factories.insert( … Continue reading →

Posted in Code, Ruby | Tagged , , | 2 Comments

MongoDB: MapReduce Functions for Grouping

Posted on October 4, 2010 by Geoff Lane

SQL GROUP BY allows you to perform aggregate functions on data sets; To count all of the stores in each state, to average a series of related numbers, etc. MongoDB has some aggregate functions but they are fairly limited in … Continue reading →

Posted in Code | Tagged , , , | 5 Comments

MongoDB Replication is Easy

Posted on August 8, 2010 by Geoff Lane

Database replication with MongoDB is easy to setup. Replication duplicates all of the data from a master to one or more slave instances and allows for safety and quick recovery in case of a problem with your master database. Here … Continue reading →

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MongoDB and Java: Find an item by Id

Posted on June 17, 2010 by Geoff Lane

MongoDB is one of a number of new databases that have cropped up lately eschewing SQL. These NoSQL databases provide non-relational models that are suitable for solving different kinds of problems. This camp includes document oriented, tabular and key/value oriented … Continue reading →

Posted in Code, Java | Tagged , , | 2 Comments