Get number of players in server by JobId

Help and Feedback Scripting Support
#1

I have recently learnt that we can teleport players and get the server they are in using a JobId. I’m implementing a matching system where new players can enter existing players to play as long as the server is not full. Is there a way I can check the number of players in a server-based on its JobId?

#2

Sadly, no built-in feature for this, but you can use DataStores to save each player count under each server’s game.JobId

#3

Sorry for replying to an old post, but for any future devs that need this, using Datastores is not a good idea. Instead, use MessagingService to respond to any questions given to a server

Example (not tested):

-- Server that we want to know the number of players of
local JobID = game.JobId
local MessagingService = game:GetService("MessagingService")

MessagingService:SubscribeAsync(JobID.."_NumPlayers", function(responseTopic)
	MessagingService:PublishAsync(responseTopic, #game.Players:GetChildren())
end)

-- Server that wants to know
local MessagingService = game:GetService("MessagingService")

local NumPlayers
MessagingService:SubscribeAsync(JOBID.."_NumPlayersResponse", function(response)
    NumPlayers = response 
end)

-- Ask server
MessagingService:PublishAsync(JOBID.."_NumPlayers")
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