Greetings, I am pleased to announce a Haskell client library for RethinkDB[1]. RethinkDB[2] is a newly released, open source, distributed database. Its simple yet powerful API seemed well suited to be accessed from a language like Haskell. This haskell library is modelled upon the existing Javascript and Python API and adds static type checking. Here is an example from the RethinkDB javascript tutorial[3] ported to Haskell: run h $ orderBy ["reduction"] . groupedMapReduce (! "Stname") mapF (0 :: NumberExpr) (R.+) . filter' filterF . pluck ["Stname", "POPESTIMATE2011", "Dem", "GOP"] . zip' $ eqJoin (table "county_stats") "Stname" (table "polls") where mapF doc = ((doc ! "POPESTIMATE2011") R.* ((doc ! "GOP") R.- (doc ! "Dem"))) R./ (100 :: Int) filterF doc = let dem = doc ! "Dem" :: NumberExpr; gop = doc ! "GOP" in (dem R.< gop) `and'` ((gop R.- dem) R.< (15::Int)) What is the advantage of RethinkDB? [4] "What's really special about all RethinkDB queries is that the program you wrote gets sent to the server, broken up into chunks, sent to relevant shards, executed completely in parallel (to the degree that the query makes possible -- complex queries often have multiple parallelization and recombination stages), but as a user you don't have to care about that at all. You just get the results. [...] Of course the visceral experience you get from using RethinkDB isn't just about the query language, or parallelization, or pleasant client libraries. It's about hundreds upon hundreds of examples like it, some large, some small, that add up to a completely different product. The team is fastidious about every command, every pixel, every algorithm, sometimes even every assembly instruction, so that people can use the product and at every step say `Wow, I can't believe how easy this was, how do they do that?!!' " I hope this library can help other Haskell programmers use this new database. Etienne Laurin [1] http://hackage.haskell.org/package/rethinkdb [2] http://www.rethinkdb.com [3] http://www.rethinkdb.com/docs/tutorials/elections/ [4] http://www.quora.com/RethinkDB/What-is-the-advantage-of-RethinkDB-over-Mongo...