I would just inline *retry_key* here:

```ruby
Resque.redis.setnx(redis_retry_key(*args), -1)
```

However if you think logging would add some value, something like this could work, I would pull the retry-key out to a variable an log it along w/ an informative message.

Since this section is the cornerstone of your fix, please comment/document this area accordingly for our future selves :)