On 1 Apr '08, at 8:25 AM, Randall Meadows wrote:
If they're updating every second, then yes, TXT records would be inappropriate. But Randall didn't say whether the updates were that frequent.I would expect maybe 5-10 over a 2-3 minute period, and then a downtime of about the same; lather, rinse, repeat for several hours at a time. Does that fall within some definition of "frequent"?
I'd say that's reasonable, if there won't be a lot of machines publishing this kind of stuff at once on the same subnet.
The only actual case I've seen where Bonjour traffic became a problem was on Apple's campus networks, after 10.2 shipped. That was a combination of very large subnets with hundreds of machines, most of them running iChat, and some inefficiencies in the original mDNS implementation that were then addressed in 10.3.
Yes, currently in practice it'll probably be one-to-one, but I'm writing for the future possibilities.
Using TXT records is still a lot easier than anything else you could do. In the spirit of "Do The Simplest Thing That Could Possibly Work", try it this way first. If it causes any problems, you could re- implement it using a TCP socket that the publisher sends notifications over, or something like that.
—Jens
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