[fiatmoney]

Sounds the intended use case for ElasticSearch.

"Given some input piece of data {email, phone, Twitter, Facebook}, find other data related to that query and produce a merged document of that data"

[Xorlev]

I will say ElasticSearch features heavily in our infrastructure elsewhere, but for the Person API product, it's purely a primary-key lookup.

My coworker wrote a bit about how the search functionality of our offering works here: http://www.fullcontact.com/blog/sherlock_search_engine_that_...

That might make more sense why we do PK lookups.