[ryanschneider]

Supporting `MAXSIZE` as well as `MAXLEN` on `XADD` would also handle a nice Kafka feature (the ability to define your log size in either number of messages or size on disk).

Something like: `XADD MAXSIZE ~ 2147484000 * foo bar` to cap the stream at 2GB + 1 node.

[dvirsky]

And if ids are timestamps, maybe we can define it as MAXTIME as well.