[erichwang]

This is more of a definitional thing. The default parameters provided in the blog example provide roughly a 60s time-to-query latency. For most folks, this is probably effectively real-time, but for others it might be too slow for other use cases. That being said, this time corresponds to the underlying Flink flush interval and this value can easily be tuned to whatever value you want it to be. For example, you could make it 10s if you wanted. However, if you do reduce the flush latency, you may want to increase your compaction frequency to balance that out.