Forum OpenACS Q&A: Response to How to test Jerry's nsvhr/nsunix virtual hosting on development box?
No, you can't use it with SSL.
I don't know of any other problems with nsvhr, but the cool part of my development with nsvhr (and almost any other piece of software) has always been that just as I think I've seen no bugs for many many months, along comes some new (to me) behavior that is just completely bonkers.
There's a small sweet spot for nsvhr/nsunix. If your sites get so popular you want to put them on their own machine, than you have to use a tcp socket based solution: nsvhr/nssock, Apache, or SQUID. Also, why it is very nice that nsvhr makes adding a new proxy easy to do and doesn't require taking down ANY aolservers, it's also a bit of a pain, that each AOLserver becomes rather piggy. Most likely you can only have somewhere between 4 and 16, or 4 and 32 AOLserver sites hosted on one machine. Contrast that with an inprocess virtual hosting technology....
To sum it up, if I had to do it again, I'd have used an Apache or SQUID reverse proxy myself. I only got into it because AOL released it in their first 3.0 release and claimed it worked, and then it didn't, but someone came up with one patch that was supposed to have fixed it, and then the gods cursed me and I broke out gdb one day trying to understand why I was the one that couldn't get this released package to work.