stream to 100k of grains

[JunioPereira]

Hello guys,
I have 100k of grain in state, I need update this grains by stream with receiver 100 request per seconds.
But when stream pulse the latence is hight, dosent exist bettle method for make this?

[artemiusgreat]

I would like to push this question higher as I'm facing similar issue. I have a trading app where each open position is a grain. Positions can be opened and closed multiple times during the day or even week but all activated position-grains remain active in memory and all of them are subscribed to stock price and maybe some other updates, so I can easily get a situation when 20K grains are subscribed to a single stream. So I was also wondering if Orleans was designed to make short-lived objects a grain or is it a bad practice.
JorgeCandeias/Trader#4

[pedershk]

Have you both considered Broadcast Channels? https://learn.microsoft.com/en-us/dotnet/orleans/streaming/broadcast-channel - when used creatively in combination with streams this is a useful abstraction for very large number of implicit subscribers.

[frostad-jpg]

@pedershk Broadcast channels are useful for targeting specific grains by a namespace and key - typically when when you want to message a grain but not worried about it being activated. If a grain that would receive the message not activated the broadcast will be lost. You cannot use it to broadcast to more than one grain of a particular type. I was very confused about how Broadcast Channels were intended to be used, but the comments in issue #8292 sorta cleared things up.

Overall Broadcast Channels don't provide a solution to sending messages to "100k of [a particular grain]". I am trying to figure out some other solution as well other than a fanout of direct grain messaging. I only have 1000 ish "Foo" grains that need to get the same infrequently sent messages though, so direct grain messaging works, but I want a more optimal way.