# shareReplay

Returns an observable sequence that shares a single subscription to the underlying sequence replaying notifications subject to a maximum time length for the replay buffer.

This operator is a specialization of `replay` that connects to the connectable observable sequence when the number of observers goes from zero to one, and disconnects when there are no more observers.

## Arguments

1. `[bufferSize]` *(`Number`)*: Maximum element count of the replay buffer.
2. `[window]` *(`Number`)*: Maximum time length of the replay buffer in milliseconds.
3. `[scheduler]` *(`Scheduler`)*: Scheduler where connected observers within the selector function will be invoked on.

## Returns

*(`Observable`)*: An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.

## Example