Lucas S. B. Mastella

Thanks for changes to support multisite, I appreciate it.

Maybe with this example: Simple PHP caching
So, create an HTML file with the latest feeds.
When there is a new request, verify that the last feed is contained in the HTML. If yes, display the HTML, else update the HTML file and displays. More or less in this way.

Check with strpos.

I couldn’t tell what the best option for the plugin.

You can try to use the Custom Content Type Manager.
Works well with Ultimate Taxonomy Manager.

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You attempted to remove ‘}’ on line 29?