Please document support for multiple queries at the same time

[csillag]

Hi, reading the readme, it's not clear to me whether or not pg-reactive supports the use case when we need to maintain multiple live queries on the same DB table, with different queries.

(Ie. when we use this in a server environment, querying the data requested by multiple clients at once.)

In this situation, the library

• must listen to update notifications coming in from PG,
• when something happens, compare it will all the active queries, and see where it applies
• and then generate events on all of those observable queries.

Does this library implement that?

Thank you for explaining. (And also documenting :)

[haoliangyu]

@csillag When you say listen to update notification, do you mean the LISTEN/NOTIFY query with triggers for data comparision?

I understand this use pattern but I have not tried yet. Therefore this library probably does not support it right now. However, it is a perfect use case for observables and it should not take much work to implement.