Java host caching (sun.net.inetaddr.ttl/networkaddress.cache.ttl) on OS X

On my Mac OS X box I was trying to get some round robin DNS working from Java (1.5) but I was the host was always resolving to the same IP. I'd set sun.net.inetaddr.ttl=0, but that didn't seem to help. It seems out of the box a Mac will cache lookups, but you can clean out the cache with the command dscacheutil -flushcache

gitweb - 500 - HEAD ref not found for project

We have some git repositories here at Oxford and a gitweb interface to view them. For some of our projects I was seeing:

500 - HEAD ref not found for project

It turns out this was because the HEAD file ( {git-directoy}/HEAD ) was pointing to ref: refs/heads/master and these projects didn't have a master branch. Changing the HEAD file to point to the correct branch fixed gitweb.

Trimpath error "context._MODIFIERS is undefined"

I was doing a little JavaScript templating with Trimpath today and at one point I was getting a nice error in my console of:

context._MODIFIERS is undefined

Looking through the trimpath code it turned out this was because I was passing in a string rather than an object as my context for the generation of the template. So I was effectively doing:

TrimPath.processDOMTemplate("someNodeId", "some string");

rather than:

TrimPath.processDOMTemplate("someNodeId", {key: "value", otherKey: "value"});

In my case I was getting the error because I forgot to eval some JSON before passing it to trimpath.