I have been trying out various scenarios with Flink with various sources and sinks. I want to know how folks have been using Flink in production. What are the common use cases. Essentially, I have implemented similar use cases in Spark and now I find it fairly straightforward to convert these flows to Flink. I do see that the throughput in Flink is an order of magnitude greater in Flink. It is also great for subsecond batching and record by record processing. Any other thoughts?