Yahoo's infrastructure - Packaging, deployment, configuration management, monitoring etc. - was all Perl about a year ago when I was there, and most likely stil

Yahoo's infrastructure - Packaging, deployment, configuration management, monitoring etc. - was all Perl about a year ago when I was there, and most likely still is. The recommended tech stack was: Java for large applications, Perl for smaller ones, and any kind of scripting. In other words, any library that accesses infrastructure would be available as a Perl Module. To me, it was interesting to see the same developers diligent about unit tests etc. when dealing with Java code don't exercise the same level of discipline when it comes to Perl.