Posted by Sixfoot James Someone else asked a similar question about this and I tried the solution offered by hapdaniel but this didn't work for me.
What is it that would cause my Pipe to return Nulll but in the editor it is working?
Essentially my XML feeds is fetching a list of URL website addresses. I then filter this feed to strip out everything and only give me the domain name such as http://www.example.com
Here's my sample Pipe:
Posted by Paul Donnelly
I agree with your theory, that Pipes could be rate limited to your source OR your source actually is having serving issues every now and then.
When this kind of thing happens I tend to feedburn the feed and use the feedburner rss url to fetch the rss instead of the original source. Feedburner effectively becomes a proxy - providing caching and stability.