What is the difference between Observable and Flowable data streams in reactive programming?

The main difference between Observable and Flowable in reactive programming lies in backpressure management.

• Observable does not support backpressure, meaning it does not control the rate of element emission. If the data source produces elements faster than the consumer can process them, it can lead to buffer overflow or data loss.

• Flowable supports backpressure, allowing the consumer to control the data flow rate. This is especially important when working with large or fast data streams to avoid overload.

Therefore, if a high event generation rate or large data volume is expected, it is preferable to use Flowable.