Is there a possible way to check the size of a data?

[ChainsawRBLX (Chain)]

Hi, Roblox data stores have a limit, so I was asking if there’s a possible way to check the size of how much data we’ve stored.

[Operatik]

You can count one byte per character at least, other encoding can raise its value. Usually because of binary conversion to character.

According to a Stack Overflow topic:

• An ASCII character in 8-bit ASCII encoding is 8 bits (1 byte), though it can fit in 7 bits.
• An ISO-8895-1 character in ISO-8859-1 encoding is 8 bits (1 byte).
• A Unicode character in UTF-8 encoding is between 8 bits (1 byte) and 32 bits (4 bytes).
• A Unicode character in UTF-16 encoding is between 16 (2 bytes) and 32 bits (4 bytes), though most of the common characters take 16 bits. This is the encoding used by Windows internally.
• A Unicode character in UTF-32 encoding is always 32 bits (4 bytes).
• An ASCII character in UTF-8 is 8 bits (1 byte), and in UTF-16 - 16 bits.
• The additional (non-ASCII) characters in ISO-8895-1 (0xA0-0xFF) would take 16 bits in UTF-8 and UTF-16.

In other words, each character costs 1 B. The cap is 4 MB(4 million characters), which is very generous already. The article here already proves it: Documentation - Roblox Creator Hub

[avodey (avocado)]

What exactly do you mean? If you want to check the size of a datastore that saved a table, just say #tabletocheck to get the amount of items in it?

[ChainsawRBLX (Chain)]

I mean roblox data stores have a limit of 256 kb so, is there a way to check the size of the data?

[avodey (avocado)]

Well, how much have you researched this before asking on the devforum?

[ChainsawRBLX (Chain)]

I have searched that a lot of times but I didn’t find anything.

[avodey (avocado)]

What do you need the size of a datastore for? If after all this, and you didn’t find your solution, try to keep your datastores small so you don’t need to check them if it breaks.

[Infi_power]

If you are storing data in tables, you can use HttpService:JSONEncode()

local dataStore = game:GetService("DataStoreService")
local exampleData = dataStore:GetDataStore("exampleData")
local HTTP = game:GetService("HttpService")

local suc,dat = pcall(function()
    return exampleData:GetAsnyc("Key_Name")
end)

print(string.len(HTTP:JSONEncode(dat)))

I didn’t tested it, so I can’t totally say this is works.

[Infi_power]

Also Datastore limit was increased from 256 Kilobytes to 4 Megabytes.

[NachtHemd]

Please read the documentation, it’s all there.

Data Stores