Transaction

Transaction is a moment in time during which Airstream guarantees no FRP glitches.

Some observables need to emit their events in new transactions. Roughly speaking:

• All async observables (e.g. delay(100))
• All observables that can create loops in the observable graph (e.g. flatMapSwitch)
• All observables that get their events from outside of Airstream (e.g. custom sources)

An observable can only emit once in a given transaction.

• See MergeStream or CustomSource for examples of handling that.

See the docs for more details.