Oddbean new post about | logout
 That's how it will work in Spring soon. Right now it's in the main thread, moving to a service worker now. We'll see how slow it is 
 Is the relay / cache going to be exclusive to Spring or could other apps talk to it? 
 We will expose it to apps running inside Spring, although I am not sure it can be done seamlessly and magically. External access is not a priority, but why not