Question: prevent duplicate jobs

[sbeckeriv]

Dearest Maintainer,

I was wondering if there was a way to prevent duplicate jobs where the payload might be the same. In a hand made system we used a hash to generate an optional number. Each job provided its own value. If it was present we had a partial index on the hash and the channel name that prevented the inserting of the duplicate.

I have tried using the ordering flag for this but i have found that one job dies it all dies.

please let me know any thoughts.
Becker