As promised, Gruple has moved from Googlecode to Codehaus. You find it’s new home here: http://gruple.codehaus.org. All the documentation has been ported. There are new mailing lists. The source is now in a Git repository. And the 1.1.1 distribution is available from the distro site. Everything is (or should be) linked to from the main [...]

I’d like to announce the first release of Gruple, a tuplespace implementation for Groovy (and Java, of course.) Release 1.0 is an *in-process* space only, meaning that it can be used to co-ordinate and synchronize threads, but not separate processes. It’s intent was to add one more tool to the toolkit for making concurrent programming [...]

Actors are a popular way to write concurrent & distributed programs. Immutable messages are passed between actors which do the required processing, avoiding the difficulties inherent in sharing data among threads/processes. Tuplespaces (best exemplified in current times by JavaSpaces) are a way to decouple cooperating processes by using pattern-matching to share immutable and persistent data [...]

Recently the growing concern with effective use of multicore processors and the subsequent popularity of the actor model came together with my desire to do a project in Groovy. Adding to the mix, I had an in-JVM tuplespace library in Java I’d never released because it seemed thread co-ordination was just not enough of a [...]

I recently discovered that Internet Explorer 6+ reports all jpeg images as having the content type image/pjpeg, thus breaking every web application that allows the uploading of files and checks for certain allowed mime types (typically image/gif|jpeg|png). Officially, there is no image/pjpeg mime type. It’s just made up. It adds no value. It is a [...]