confirm feed exists

so this simple patch adds a DB column to the simplefeed_feed table called error. It sets error column to 1 when $feed->error isset(). When finding feeds to process it checks to make sure error = 0. Also this patch adds an index to error column (it only has 2 values and it will only be used as a 'filter' therefore, index will make it faster).

it cut things down tremendously on my dev machine.

As far as creating that table you have there not sure on how to determine the new items added per update and update rate

And i think what would be far more interesting, is a simplefeed_log table that has for instance vid, msg. That way on node view or in this admin table, it could say vid ->"Added 5 items" or vid->"cUrl failed". It would provide a way to understand whats going on under the hood since everything is soo automatic

Subscribing, greetings, Martijn

Here is a better one as it contains the option for validation of feed on hook_validate()

It also contains the fix for: http://drupal.org/node/307686

Edit: the reason it contains both fixes is cause they end up overlapping. to do the validation of the feed you have to be able to fetch feedburner feeds. but if you don't want to commit something a patch for 2 issues at once, remove the header() stuff. two lines

oops! need to add on simplefeed_update() set error = 0