Database Sharding Lessons

Dan Pritchett has written an excellent blog detailing his experience with database sharding while working as an architect at eBay, Inc. and Rearden Commerce:

Lesson 1: Right Size Your Shards

Lesson 2: Use Math on Shard Counts

Lesson 3: Carefully Consider the Spread

Lesson 4: Plan for Exceeding Your Shards

Lesson 5: Shard Early and Often

You can read the details of each lesson in Dan’s blog.