Document magic numbers at entry_is_time_to_retry()
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if (diff < 6*60*60)
return now > (e->last_attempted + 60*60);
else if (diff < 3*24*60*60)
return now > (e->last_attempted + 4*60*60);
else if (diff < 7*24*60*60)
return now > (e->last_attempted + 18*60*60);
else
return now > (e->last_attempted + 36*60*60);
}This is our entry guard retry logic. We should probably document these numbers, so that they look less magic.