Covering :

• Persistent Connections
• Parallelism
• Asynchronicity
• Performances:

  Time needed for `serialized' called: 12.12s
  Time needed for `Session' called: 11.22s
  Time needed for `FuturesSession w/ 2 workers' called: 5.65s
  Time needed for `FuturesSession w/ max workers' called: 1.25s
  Time needed for `aiohttp' called: 1.19s

• Streaming

RxJS takes the concept of funneling consecutive actions to the next level. A promise can only handle a single value, limiting it use cases. Additionally, promises are not cancellable, meaning that it has the potential to block the thread and use up unnecessary resources

Conversely, RxJS offers a solution to these limitations by offering more than one channel of communication to simplify the handling of a multi-step event in an efficient way.