id's that skip the textual part on their lookup/url validation and also don't redirect are not ideal, probably as bad as soft 404s. Maybe not as bad for bots if the canonical tag shows the intended URL.
Personally I'd avoid using id's and use a 32-bit hash of the URL which is more or less as performant as a straight id lookup. I usually went with murmurhash.
Personally I'd avoid using id's and use a 32-bit hash of the URL which is more or less as performant as a straight id lookup. I usually went with murmurhash.