Fan-out Querying for Federations in SQL Azure (Part 2): Scalable Fan-out Queries with TOP, ORDER BY, DISTINCT and Other Powerful Aggregates, MapReduce Style!

Welcome back. In the previous post: Introduction to Fan-out Querying, we covered the basics and defined the fragments that make up the fan-out query namely the member and summary queries. Fan-out querying refer to querying multiple members. We looked at queries examples in the previous post with member queries with no summary queries, that is…


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…


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…


TechEd 2011 (Video) – Introducing SQL Azure Federations: Big data and Big Scale…

Here is the session I did this week at Atlanta on SQL Azure Federations. SQL Azure Federations: Big Data, Big Scale… SQL Azure provides an information platform that you can easily provision, configure and use to power your cloud applications. In this session we explore the patterns and practices that help you develop and deploy…


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…


Great New Whitepaper on SQL Azure and Sharding

Just out… This whitepaper summarizes the sharding technique and highlights the new application modeling best practices for best scalability and economics. Most importantly it focuses on how you can build sharded applications today on SQL Azure. http://social.technet.microsoft.com/wiki/contents/articles/sharding-with-sql-azure.aspx Happy reading…


Apps that will love SQL Azure Federations? Here are a few…

In previous posts I talked about scaling options and techniques and introduced the concepts for SQL Azure federations. Let’s solidify the concepts with a few sample scenarios that showcase federations. Don’t expect an exhaustive list… I am sure you all can come up with many other examples of how to use SQL Azure federations. Sharding…