Why does Roblox cap DataStore values at 4 MB?

Roblox enforces a 4,000,000-byte UTF-8 limit per value to keep replication and storage predictable. Exceeding it triggers Error 105.

How do I measure DataStore size in Luau?

Use `string.len(HttpService:JSONEncode(data))` after serializing your value. This calculator does the same in your browser.

What's the maximum DataStore key length?

Roblox documents 50 characters but DevForum 176772 confirmed 49 is the safe effective limit.

Validador de tamanho e chave DataStore Roblox

Roblox limita valores DataStore a 4 MB UTF-8. Evite Error 105 antes do deploy.

71 bytes UTF-80.00% do limite 4 MB

Seguro. Abaixo de 60% do limite.

Crie um jogo Roblox sem programar

roship escreve o Luau, você fica com 70% de cada venda.

Experimente roship grátis

Use no seu jogo (roblox-ts):

// Safe-save: refuse payloads above 4 MB (generated by roship.ai)
import { DataStoreService, HttpService } from "@rbxts/services";

const store = DataStoreService.GetDataStore("PlayerData");
const measure = (data: unknown): number =>
  HttpService.JSONEncode(data).size();

function safeSave(key: string, data: unknown): void {
  const bytes = measure(data);
  if (bytes > 4_000_000) {
    warn(`Payload ${bytes}B exceeds 4MB cap`);
    return;
  }
  store.SetAsync(key, data);
}

Crie um jogo Roblox sem programar

roship escreve o Luau, você fica com 70% de cada venda.

Experimente roship grátis

Use no seu jogo (roblox-ts):

// Safe-save: refuse payloads above 4 MB (generated by roship.ai)
import { DataStoreService, HttpService } from "@rbxts/services";

const store = DataStoreService.GetDataStore("PlayerData");
const measure = (data: unknown): number =>
  HttpService.JSONEncode(data).size();

function safeSave(key: string, data: unknown): void {
  const bytes = measure(data);
  if (bytes > 4_000_000) {
    warn(`Payload ${bytes}B exceeds 4MB cap`);
    return;
  }
  store.SetAsync(key, data);
}