NoSQL With MySQL in Ruby - Friendly
Store schema-less data in MySQL. Evolve your data model without feeling the pain of migrations. Build indexes offline Building an index can take hours with a lot of data. Stay agile without taking your app offline. Write-through and read-through caching baked right in. Fast websites make more money. The 99.8% cache hit rate we see in production is a one-liner with Friendly.
via friendlyorm.com
Nice! I started a project to do this same thing, but whatever, this one’s already done :)