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 tamaño y clave DataStore Roblox

Roblox limita los valores DataStore a 4 MB UTF-8. Evita Error 105 antes del despliegue.

71 bytes UTF-80.00% del límite 4 MB

Seguro. Por debajo del 60% del límite.

Crea un juego Roblox sin programar

roship escribe el Luau, te quedas con el 70% de cada venta.

Prueba roship gratis

Úsalo en tu juego (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);
}

Crea un juego Roblox sin programar

roship escribe el Luau, te quedas con el 70% de cada venta.

Prueba roship gratis

Úsalo en tu juego (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);
}