How to use DataStore2 - Data Store caching and data loss prevention

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#208

Was experiencing a similar issue for a while and this version fixed it, thanks.

1 Like
#209

now THIS… THIS IS ACTUALLY GOLD

Thank you.

Edit: after applying it to our game, there’s far less errors, thank you for making my life easy (even if I had to port old data to data store 2 which was kind of weird to program… Should I do a tutorial/example?)

4 Likes
#210

Is it still worth using DataStore2? Or is it gone by now?

1 Like
#211

Yes? I don’t know what you mean by “gone by now”.

6 Likes
#212

What I mean is, Did the Roblox staff remove it? Are there still Datastore errors? So is it still worth using it?

1 Like
#213

No.

Yes (although that’s not the main benefit of DataStore2).

Yes.

2 Likes
#214

v1.1.0 is out which features a breaking bug fix: Release DataStore2 v1.1.0 · Kampfkarren/Roblox · GitHub

Previously when working with combined data stores, if the data store was empty then this code:

local dataStore = DataStore2(UUID(), fakePlayer)
dataStore:BeforeInitialGet(function()
	return "deserialized"
end)
print(dataStore:Get())
dataStore:Set("doge")
print(dataStore:Get())

…would print nil (because there was no data initially) and then “deserialized”, instead of the expected “doge”. This has been fixed. You are only affected by this bug if you use combined data stores and BeforeInitialGet on that data store.

The module will be updated relatively soon.

5 Likes
#215

How does Datastore2 handle failed attempts to retrieve data from Roblox? Like, if it fails does it send something back to our scripts so we can kick the player or whatever we choose to do?

#216

Please read the section on the backups API.

2 Likes
#217

I’m probably missing something, but why does DataStore2 not automatically combine every key to a combined datastore?
Also, why are we allowed to choose the master key when the rest is completely internal?

1 Like
#218

Because combined data stores haven’t always existed–combining all data stores now or making that the default would break backwards compatibility and lose people’s data.

Don’t have a great answer for this one, but it makes it easier to know what key you’re supposed to search for when using a data store viewer and makes it easier to separate combined data stores if you need to do that for storage space reasons or something similar.

3 Likes
#219

I have a couple questions, hopefully I can format them correctly :worried:

So in the DS2.Combine(“”,“”,“”) function,

if you have

	local levelDataStore = DS2("Level", player)
	local coinDataStore = DS2("Coins", player)
	local gemDataStore = DS2("Gems", player)
	local winDataStore = DS2("Wins", player)
	local xpDataStore = DS2("XP", player)
	local xpnDataStore = DS2("XPN", player)
	local rebirthDataStore = DS2("Rebirths", player)

then you call

DS2.Combine("onemain","Level","Coins","Gems","Wins","XP","XPN","Rebirths")

It should save all those “DataStores” as:
“OneMainDataStore” --datastore
…Level --inside datastore
…Coins–inside datastore
…Gems–inside datastore
…Wins–inside datastore
…XP–inside datastore
…XPN–inside datastore
…Rebirths–inside datastore

Right?

rather than with out calling the .Combine() which would be:
“Level”–datastore
“Coins”–datastore
“Gems”–datastore
etc.

or am i dumb? if so, please explain :worried:

2 Likes
#220

Yes–combining just makes them all save as one database but hides that aspect from the user.

3 Likes
#221

User meaning the person writing the code correct?

And this would be avoiding the throttle right? If i were to have like 50 of them, then combine them all, it would all save as one correct?

#222

Yes. The code for working with combined data stores should be the exact same as working without.

Yes.

2 Likes
#223

You are honestly amazing. <3

I will absolutely be using DataStore2 in ALL of my games :slight_smile:

3 Likes
#224

If Datastore2 does not work in Studio while testing, I am curious how people are debugging their games without constantly publishing to Roblox and testing in there, which is tedious and very time consuming.

#225

It does, what made you think it didn’t?

1 Like
#226

If I have a combined datastore like this:

    --Super Awesome Game Version 1.0
    DataStore2.Combine("PlayerData", "Tickets", "Inventory")

then in a later update add another datastore like this:

    --Super Awesome Game Version 1.1: The Level Update
    DataStore2.Combine("PlayerData", "Tickets", "Inventory", "Experience")

will the players who played before V1.1 keep their data from earlier versions?

1 Like
#227

Yes. It uses :GetTable internally.

5 Likes