I realize this is a nit, but, given the JSON encoding of time.Time will automatically marshal times to/from an rfc-3339 time stamp, should the model.Task struct use the time.Time object instead of an int64? Not only will this be more readable to humans looking at the JSON, it's a format that can be consumed externally without having to know which epoch is the base.

Thoughts?

The last 2 steps in ConvergeRunOnce are the most important. However, the behavior of both those APIs is to bail on first failure means that it might take several cycles (could be worse), to actually touch and delete the items. If we have a system that is always performing work, this will never complete its task.

Should we either do the two actions per item rather than bulk or add a new API that will ignore errors or ...?