Question: why caching on non-get requests?

I was browsing through this code and came upon this part:

[https://github.com/urweb/world/blob/master/src/c/world.c#L111](https://github.com/urweb/world/blob/master/src/c/world.c#L111)

Why is that caching being done? Does it have something to do with restarts? I'm just wondering since sometimes you might want to do the same POST twice, but this would disallow you from doing that?

Simon
