How to instantly share Data between servers?

[coolalex1835 (Waltuh)]

Hello!

For my Hashes and Salts tutorial, I wondered if there was a way to communicate between all Servers instantly and send them the hashes. My hashing method works by giving every string its own string of random nonsence (a hash). Currently, strings in my server are stored and will always create a hash or output one.

For example, if you input something, it’s output would always be the same.
Abc123 → 8J4jwkwa
Abc123 → 8J4jwkwa
Abc123 → 8J4jwkwa
Of course, each string will have a different hash
GermanyNotReal → 2naw1j24
GermanyNotReal → 2naw1j24

But How do I instantly and effiecently communicate between servers on what the hashes are?

[apenzijncoolenleuk1 (Apenz1)]

You might want to look into MemoryStore.

[Zadkay]

This sould help. its just an example

@Zadkay

I think it would be more efficient to use the Messaging Service inestead of Http Requests, it would be something like this:
By the way this only works in your game, but maybe it can help.

local Players = game:GetService("Players")
local HttpService = game:GetService("HttpService")
local MessagingService = game:GetService("MessagingService")

MessagingService:SubscribeAsync("Servers",function(Message)
	--Stuff Here
end)

while true do
	local Data = {
		game.JobId -- This will return the job id from the current server of your game
	}
	local Encoded = HttpService:JSONEncode(Data)
	local Sucess,Error = pcall(function()
		MessagingService:PublishAsync("Servers",Encoded)
	end)
	task.wait(5)
end

I suggest you check the documentation of MessagingService | Roblox Creator Documentation.

[Autterfly]

Your code is not a hashing algorithm, it’s a random string generator backed by a cache.

You should consider implementing or borrowing a proper hashing algorithm like SHA256 (or lighter one if needed) which don’t require a cache. These are more secure and well tested than a hand roll from someone inexperienced in cryptography.