Syndication Loops

[tomjn]

It's possible for loops to form resulting in duplication. For example:

• Alice.com has a post announcing Alices new shop
• Alice syndicates this post to Bob.com
• Bob thinks Alice should know about her knew shop, and syndicates to Alice.com
• Now there are 2 posts on Alice.com about her new shop

[philipjohn]

Perhaps Alice could start a chain of shops?

More seriously - any thoughts about how to deal with this? In Syndication the two sites are not going to know about each other. Do we try to match content somehow? Perhaps look for content with the same title? What do we do if we find something?

[joshbetz]

I think @tomjn or someone had previously suggested setting post meta to signify that the post was created by Syndication.

[tomjn]

See https://github.com/Automattic/syndication/issues/126

[marcusquinn]

Include the canonical link and content-hash created in the post meta. Then use that to decide on the origination authority and if the returned content has changed:

https://www.dropbox.com/developers/reference/content-hash