Compare the design of Featherstitch [1], in contrast to BSD's soft updates. (I wonder what happened to Featherstitch.) [1]: https://lwn.net/Articles/354861/ h

Compare the design of Featherstitch [1], in contrast to BSD's soft updates. (I wonder what happened to Featherstitch.) [1]: https://lwn.net/Articles/354861/ https://lwn.net/Articles/354861/ It's a common pattern that you have a list of items of work to be done which in principle you could know ahead of time, but in practice it's better to track at runtime (even though it means the computer ends up repeating the same calculation again and again).