Roblox adds server memory warnings for scripted cleanup
Roblox adds a server memory warning signal for custom cleanup. Test handlers in Team Test, since local Studio playtests cannot fire the signal.
Roblox has released DataModel.ServerLowMemoryWarning for developers running live game servers, according to its November 2, 2026 announcement. The signal lets server scripts respond when memory usage becomes high, giving teams a chance to remove nonessential content before an out-of-memory crash disconnects players. It is available on live RCC servers and in Team Test sessions.
A warning, not automatic cleanup
Roblox says the signal fires when its memory controller detects a transition from normal to high memory usage. If usage stays high, it fires again every 60 seconds. Handlers run on the DataModel task scheduler thread, where they can safely read and modify instances.
The notification does not release memory itself or guarantee that a server avoids crashing. Developers must supply the cleanup logic. Roblox suggests removing temporary effects or debris, unloading unused map areas, or pausing NPC and item spawning. It also recommends continued memory monitoring through the Developer Console rather than treating the signal as a substitute for memory budgeting.
Test a bounded cleanup handler
Our recommendation is to connect a server script using the API reference this week and start with disposable effects. Log warnings and cleanup duration, then check that repeated calls remain safe after those effects have already been removed. Keep the work short enough to finish before the next 60 seconds elapse.
We'd start by validating this in Team Test, not a local Studio playtest. Roblox says the signal never fires on clients or during local Studio playtests, even if a LocalScript connects to it. This API does not cover client memory pressure.