Introduction to Fan-out Queries for Federations in SQL Azure (Part 1): Scalable Queries over Multiple Federation Members, MapReduce Style!

Happy 2012 to all of you! 2011 has been a great year. We now have federations live in production with SQL Azure. So lets chat about fanout querying. What is a fan-out query? Federations provide a model for partitioning parts of your schema over to multiple member databases for harnessing scalability of many nodes. However…


Pricing and Billing Model for Federations in SQL Azure Explained!

Note: the article has been updated with the new pricing model that went into effect in Feb 2012. Now that Federations is live in production, lets talk about how the billing model works for federations. Good news is the model is very simple; With federations, every member can be considered a regular SQL Azure database….


Federation Repartitioning Operations: Database SPLIT in Action

Repartitioning operations is a large part of the value of federations. The ability to repartition databases enable elasticity in the database tier. With federations online repartitioning operations, database tiers can be made even stretch-ier. Scheduling downtime not required! So apps can expand and contract to engage larger of fewer nodes any time for the database…


SQL Azure Federations: Robust Connectivity Model for Federated Data

In this post I wanted to focus on connectivity enhancements that come with SQL Azure Federations. SQL Azure Federation comes with a special FILTERING connection option that makes is safe to work with federated data and is critical for the fully-available-repartitioning component of federations. We’ll take an in depth look at this and build towards…