Yes, while driving, use cars in the lanes beside you. As a car passes you can adjust your side mirror so it catches the car just as it leaves your rear view mirror. With this setting, the passing car will enter your peripheral vision before it leaves your side mirror.
Once set you can find a head position that allows you see your own car, and you can use that position to reset your mirrors after the wife drives your car.
I am unfamiliar with the general problem you are solving for, but I am interested in graph dependencies in general. May I ask, How many nodes are in a typical graph? Is there a possibility of cycles?
In this case, there would be one node for each cacheable item. In this case, it's likely one node for each cacheable record in your data store, plus one node for each cacheable collection.
Cycles are reasonably possible, if two cached items depend upon each other. For example, if you store the text of the last comment a user made on HN inside the "user" cache entry, and the user edited their most-recent comment, you would have to invalidate not only the comment but also the user.
Stash treats dependencies as a DAG (directed acyclic graph). During traversal when a node is invalidated, it's aware of the potential of cycles and won't backtrack over paths its already examined.
Is there a site (or sites) where I can purchase content and the money goes entirely to human creators of that content? I love standup, I love the little guys, but catching them on the day they may be in my city is very inconvenient. It is too bad all those comics can not have a central site to catch their acts, and they can be paid (even if some money gets funneled to that site for costs).
The problem is not lobbying, the problem is politicians know their term in office is finite, and they must continue to work on their career development while in office. Essentially, the big corporate lobby groups and politicians have an unwritten contract: A politician that pushes for favorable industry legislation is guaranteed a good job when his term is over.
The only solution I can imagine to mitigate this problem is to keep politicians in the government after their term has ended forever. I have no idea what they would do, maybe review legislation, be in committees, or just stay home. But, given the average age of a politician, I would imagine the increased payroll would not be to onerous.
Correct, and I'd like to add to your thought. Another problem is consistency. "Business (sector) X" has an income stream, a lobbying budget, and a handful of focused and related political goals. Politicians know this. Also, lobbying is an investment with an implied ROI. This is not the case for "everyone that is not X," who will likely not repeatedly throw money at an issue for many years to come.
Once set you can find a head position that allows you see your own car, and you can use that position to reset your mirrors after the wife drives your car.