Simon Willison’s Weblog

What’s powering the Content API? The new Guardian Content API runs on Solr, scaled using EC2 and Solr replication and with a Scala web service layer sitting between Solr and the API’s end users. 24th May 2010, 2:08 pm

Using Scala with Google App Engine. Scala works, but I haven’t seen confirmation on actors yet (which are likely to break due to their dependency on threads). 11th April 2009, 3:28 pm

Kestrel. Twitter’s Robey Pointer rewrote their Starling message queue in 1500 lines of Scala, adding reliable fetch (where consumers can confirm their receipt of an item) and blocking fetches, which reduce the need for consumers to poll for updates (and hence solve my only beef with the original Starling). I haven’t tried running this on a low spec VPS yet but it looks very promising. 26th February 2009, 10:20 am