Roblox DataStore Debugging Guide

Use stable keys and safe defaults

• Build keys from the user ID, not the display name.
• Validate loaded data before applying it to leaderstats or upgrades.
• Use default data when nothing exists, and never assume every field is present.

Save without spamming

• Autosave at a sensible interval and avoid saving every tiny click.
• Use protected calls and retry logic for temporary failures.
• Save when the player leaves and during shutdown, while still handling failed saves clearly.

Test in real conditions

• Test with API services enabled, multiple joins and a clean new account.
• Try corrupt or missing data shapes in Studio to make sure validation works.
• Check that purchases, upgrades and rewards update server-owned state before saving.

Use this with Stellar AI

Ask Stellar for a Roblox save module with DataStore validation, leaderstats setup and shutdown-save notes.