stream IDs should be random strings

[jba]

Now they are integers that are incremented per-process. This might not work well when servers are distributed: two servers can get the same stream ID, and then the event store (assuming it is global to all servers) can get confused.

[findleyr]

Agree. If we're going to support resumability across processes, we need to make this change.

[2bitburrito]

I'd be happy to have a go at this if that's helpful?

[findleyr]

Sure, @2bitburrito that would be great, though I'm planning to move on to the stream persistence soon, so if you won't get to it in the next day or so, I'll pick it up.

We have a randText helper to produce a random string.

[2bitburrito]

Ok great - I think i have a solution. How do we feel about having a new defaultStreamID generated and stored on the StreamableServerTransport struct? That way we can keep a repeatable default stream without any chances of collisions. Ill push up my implementation shortly. Let me know of your thoughts