I did a write-up of something similar recently with Postgres, although I didn't do it with the key-value store types (i.e. hstore or json). The value of this is

I did a write-up of something similar recently with Postgres, although I didn't do it with the key-value store types (i.e. hstore or json). The value of this is it shows you how you can use some of the built-in types - I don't know how it scales to 100 MM records though. http://www.garysieling.com/blog/postgres-time-travelling-debugger http://www.garysieling.com/blog/postgres-time-travelling-deb...