ProfileService Datastore 502 error

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#1

I’m using ProfileService and I seem to randomly get this error:

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image981×395 258 KB

It occurs whenever a player joins, but seems to only happen maybe 1 in 50 tries. I cannot reliably reproduce the problem. Its a major problem as it simply does not let some new players play the game at all and they think it is broken, thereby leaving a negative impression on them.

Also worth noting, a player can join, experience this issue, make no changes, and rejoin and it will work fine.

Below is a code snippet for when a player joins and how I set up their data/profile. Maybe I am doing something wrong with implementation?

local function playerAdded(player)
        local profile = ProfileStore:LoadProfileAsync('Player_'..player.UserId)

	if (profile) then
		if not profile.Data['Buildings'] then
			profile.Data = decompressData(profile.Data)
		end
		
		profile:AddUserId(player.UserId)
		profile:Reconcile()
		
		profile:ListenToRelease(function()
			local plrData = Profiles[player].profile.Data
			print(plrData)
			
			local asStr = Http:JSONEncode(plrData)
			
			print(#asStr)
			
			Profiles[player] = nil
			
			if (script.ProfilesLoaded:FindFirstChild(player.UserId)) then
				script.ProfilesLoaded:FindFirstChild(player.UserId):Destroy()
			end
			
			player:Kick()
		end)
		
		if not (player:IsDescendantOf(plrs)) then
			profile:Release()
		else
			local leaderstatsFolder = Instance.new('Folder')
			leaderstatsFolder.Name = 'leaderstats'
			leaderstatsFolder.Parent = player
			
			Profiles[player] = 
				{
					profile = profile,
					leaderstats = leaderstatsFolder
				}
			
			local cashStat = Instance.new('StringValue')
			cashStat.Name = 'Cash'
			cashStat.Value = Common.shortCash(math.floor(profile.Data.Cash))
			cashStat.Parent = leaderstatsFolder
			
			local blocksMinedStat = Instance.new('IntValue')
			blocksMinedStat.Name = 'Blocks Mined'
			blocksMinedStat.Value = profile.Data.BlocksMined
			blocksMinedStat.Parent = leaderstatsFolder
			
			
			local val = Instance.new('StringValue')
			val.Name = player.UserId
			val.Parent = script.ProfilesLoaded
			
			script.Listener.Update:Fire(player, 'ResourcesDiscovered', profile.Data.ResourcesDiscovered)
		end
	else
		player:Kick()
	end
end

game.Players.PlayerAdded:Connect(playerAdded)
4 Likes
#2

As it states, it’s an internal error likely due to DataStore services being down, and all we can do is wait for the service to be restored/stabilize.

For the future, I would recommend letting players know via notification (via gui or kicking) in case of an outage that their data has not been loaded and to retry again shortly.

#3

You should look into ProfileStore if this problem still occurs.

#4

See “Saving data which Roblox cannot serialize” in ProfileService docs - I have a feeling that might be your issue as DataStores can be very vague about certain misuses:

https://madstudioroblox.github.io/ProfileService/troubleshooting/#saving-data-which-roblox-cannot-serialize

You should also make sure you’re staying under the 4MB data limit for any DataStore key. If nothing helps, then it might just be a temporary DataStore outage, especially if it hasn’t been happening for a while without changes to your game.