Category Archives: NoSQL

Exploring NoSQL: Couchbase

Posted on April 1, 2012 by

In February 2011, Membase, Inc. and CouchOne merged to combine the strengths of their two open-source NoSQL projects, Membase and CouchDB. The joint team released Couchbase 1.8 in January, 2012 as an upgrade to Membase 1.7. Version 2.0 is now … Continue reading →

Posted in Couchbase, CouchDB, MongoDB, NoSQL, Uncategorized | Leave a comment

Be Careful with Sloppy Quorums

Posted on March 5, 2012 by

In my last posts on eventual consistency, I mentioned that R+W>N guarantees consistency. Thanks to commentator senderista for pointing that this statement does not hold in the case of sloppy quorums. The Amazon Dynamo article describes sloppy quorum as such: … Continue reading →

Posted in NoSQL, Riak | Leave a comment

Exploring NoSQL: Fine Tuning CAP with Riak

Posted on February 28, 2012 by

In previous posts, I explored MongoDB and Redis. MongoDB, a document-oriented database, allows developers to work with JSON documents in interesting ways. Redis offers developers a set of fundamental data structures upon which to build applications. Riak, in contrast, offers … Continue reading →

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MongoDB Aggregation Framework: The SQL of NoSQL

Posted on February 22, 2012 by

No, it’s not really SQL. Its syntax resembles JSON. It returns a collection of JSON documents. But the Aggregation Framework addresses for MongoDB what many have found lacking in non-relational databases, the capability for ad hoc queries that SQL performs … Continue reading →

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Exploring NoSQL: Redis

Posted on February 7, 2012 by

Redis differs so dramatically from traditional databases that you’d be forgiven for not recognizing the family resemblance. Indeed, it’s possible to run Redis as a key-value memory cache, mimicking the functionality of Memcached, which itself is not a database. Like … Continue reading →

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Exploring NoSQL: Memcached

Posted on January 31, 2012 by

Memcached might seem an odd place to venture in an exploration of NoSQL databases. It is not a database. It provides no persistence. It purges items from memory to free space as needed. And there is no replication. If data … Continue reading →

Posted in NoSQL | 1 Comment

Harmonic: A MongoDB Success Story

Posted on January 25, 2012 by

After writing my last post on MongoDB, I attended a meet-up at the Mozilla office in San Francisco to hear the tale of a real company in the process of migrating from Microsoft SQL Server to MongoDB. The company, Harmonic, … Continue reading →

Posted in MongoDB, NoSQL, Workflow | Leave a comment

Exploring NoSQL: MongoDB

Posted on January 24, 2012 by

MongoDB is one of the most popular of open source NoSQL databases. Supported by 10gen and boasting a long list of deployments including Disney, Craigslist, and SAP, MongoDB has a remarkably simple application programming interface (API) and all the tools … Continue reading →

Posted in MongoDB, NoSQL | 3 Comments

NoSQL: The Joy is in the Details

Posted on January 23, 2012 by

Whenever my wife returns excitedly from the mall having bought something new, I respond on reflex: Why do we need that? To which my wife retorts that if it were up to me, humans would still live in caves. Maybe … Continue reading →

Posted in NoSQL | 3 Comments