Micronaut - Persist WebSocketSession to redis - websocket

Question

I am trying to persist my WebsocketSessions on Redis and then succesfully broadcast messages to all my active sessions.
Following the documentation:
https://docs.micronaut.io/latest/guide/index.html#websocket
https://docs.micronaut.io/latest/guide/index.html#sessions
https://micronaut-projects.github.io/micronaut-redis/latest/guide/#sessions
I would expect when I have the following code on my ServerWebSocket, the WebSocket session to be stored automatically on Redis.
#OnOpen
fun onOpen(branchId: Long, session: WebSocketSession) {
session.put(USER_SESSION_KEY, user.id)
session.put(BRANCH_SESSION_KEY, branch.id)
...
session.sendAsync("smth")
}
And then whenever I call the broadcaster, I am expecting the message to be broadcasted to all the open stored-redis-sessions that match the given predicate.
webSocketBroadcaster.broadcastAsync(
webSocketMessage,
shouldSendMessageForSession(order)
)
private fun shouldSendMessageForSession(order: OrdersEntity) = Predicate<WebSocketSession> { session ->
val userId = session[USER_SESSION_KEY, Long::class.java].toNullable() ?: return#Predicate false
val user = userEntityRepository.findById(userId).toNullable() ?: return#Predicate false
val branchId = session[BRANCH_SESSION_KEY, Long::class.java].toNullable() ?: return#Predicate false
return#Predicate order.branchId == branchId && order.canAccessWithUser(user)
}
Sadly this is not happening or I am missing something :( Has anyone found a solution for this?
Is this supported?
If yes, do i need to do something else in order, my broadcaster, to be aware of all the sessions stored on Redis?
Is there a way to serialize|persist a webSocketSession?
Thank you!