Storage limit for indexeddb on IE10

Question

We are building a web-app that store lots of files as blobs with indexedDB. If the user uses our app at its maximum, we could store as much as 15GB of file in indexeddb.

Answer 1

I afraid you can't. Providing the storage limit and asking the user to allow more space is the responsibility of the browser vendor. So I don't think the first option is applicable.

I know the user can allow a website to exceed a give limit (internet options > General > Browsing history > settings > caches and databases), but I don't know if that will overrule the 250MB. It can be that this is a hardcoded limit you can't exceed.

This limit is bound to a domain meaning you can't solve it by creating multiple databases. The only solution would be to store on multiple domains, but in that case you can't cross access them. Also as I see the 250MB limit will be for indexeddb API and File API combined