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

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#872

to save a table you can simply do this:

local defaultTable = {["Points"] = 0}

local mytable = myTableDatastore:GetTable(defaultTable)   --get the table
mytable["Points"] = mytable["Points"] + 1 --edit the table
myTableDatastore:Set(mytable) --set the table (same way as saving an Intvalue)
4 Likes
#873

Hi, for some reason my data doesnt save when the game is shutting down.

I tried doing both:
DataStore(ds.key, player):Save()

and
–SavedFile is a dictionary
DataStore(ds.key, player):Set(SavedFile)

but no luck.

Can you please help me?

#874

Use the latest version on the releases and it should work.

#875

I have a question regarding DataStore:OnUpdate. If I register a callback, it’s called every time the cache is updated. Suppose I make two updates in the cache in quick succession (e.g. I have a table in cache and its values are updated by different scripts. At some point two keys are updated almost at the same time in different scripts). In this scenario, OnUpdate has the guarantee that the first update will finish before the second one starts?

#876

Lua is not multithreaded. It’s impossible for two updates to be called at the same time. Whichever goes first callls OnUpdate.

2 Likes
#877

That’s true. I was confused for a moment because each script runs in its own thread and I wondered if the thread scheduler could switch threads in the middle of the execution of one of the scripts. That’s not the case as explained here (Promises and Why You Should Use Them). Since each update runs until completion or until it yields there is no worries that onUpdate will run over the other.
Thank you for your answer.

#878

Hi,

My game is having problems with saving for mobile users? Could there be any problem with datastore2?

#879

DataStore2 is server sided, and so wouldn’t care about what platform a player is on. I do not have these issues.

1 Like
#880

Is there any way we can message you privately for advice?

#881

You can just PM me on the forums, but I can’t promise I’ll respond quickly.

#882

is it possible to require the module on client and use it as i would on the server?

#883

Datastores don’t work on the client.

#884

DataStore is not supported for LocalScript, however you can get it through remote events!

1 Like
#885

How would I perform rollbacks on data for a game that uses Datastore2?

#886

There is no built in way to do this–DataStore2 containing older data should be seen as an implementation detail, not necessarily as an exposed feature.

1 Like
#888

How would I use :Increment() to update just one value in a table I have saved?

#889

if it is to add a value use this

local DataStore2 = requiere (DataStore2)

DataStore2.combine ("MasterKey", "Money")

local MoneyData = DataStore2 (Player, "Money")

MoneyData:increment (1,0)

--- 1 increment
--- 0 initial value
#890

I know but I want to increment one value that’s in a saved table.

local minerValues = minerSave:Get({
	"Cheap Robo Miners",
	0,
	"Robo Miners",
	0,
	"Buff Robo Miners",
	0,
	"Robo Drill Miners",
	0,
	"Buff Robo Drill Miners",
	0
})

That’s my save and I want to increment just one number at a time by one, so the way I was thinking of doing it was just setting it every time to have the numbers be a physical value’s value and just increment the one I need or to have an on update function for the physical values that updates/sets each value in the table, but it would be much more effecient to just increment it.

#891

This makes dealing with data so much less painful. Thank you so much! :smile:

#892

Please correct me if I’m wrong, but when retrieving values within a table like this, wouldn’t you have to use :GetTable()? This will use the default values in the table if it doesn’t have certain keys instead of simply checking whether or not the table exists like :Get() does.