What is the default diskspace that URLCache.shared instance has

Question

Is it necessary to assign diskspace when I use URLCache.share instance? What is the default value that it has?

Answer 1

@ScottZhu's answer in Swift:

URLCache.shared.memoryCapacity
URLCache.shared.diskCapacity
URLCache.shared.currentMemoryUsage
URLCache.shared.currentDiskUsage

Answer 2

Here's your default cache size in bytes:

po URLSession.shared.configuration.urlCache?.currentMemoryUsage
- some : 1859

po URLSession.shared.configuration.urlCache?.memoryCapacity
- some : 512000

po URLSession.shared.configuration.urlCache?.diskCapacity
- some : 10000000

po URLSession.shared.configuration.urlCache?.currentDiskUsage
- some : 98408

Different devices might have different cache sizes, but that's the way to check it.

Answer 3

Yes, you have to use it.

From Apple Docs:

Applications that do not have special caching requirements or constraints should find the default shared cache instance acceptable. An application with more specific needs can create a custom URLCache object and set it as the shared cache instance using setShared(_:). The application should do so before any calls to this method.

If you don't want to use caching set it explicitly to nil.

URLCache.shared = {
        URLCache(memoryCapacity: 0, diskCapacity: 0, diskPath: nil)
}()