Buffer_Safeguard

★ 5.8 · n8n · medium · 9 nodes

Buffer_Safeguard is an n8n automation template that runs on a schedule to protect data-processing buffer queues from duplicates and race conditions during parallel execution. Reach for it when multiple workflows write to the same table simultaneously and records keep duplicating, when concurrent jobs overwrite each other's results, or when you need to guarantee each row is processed exactly once. Trigger: schedule. Integrations: Data Table (as the intermediate buffer), Google Sheets (state synchronization), Telegram (conflict and error alerts). The workflow fires at set intervals to inspect and flush the buffer rather than reacting to an external event. Direction — queue integrity and deduplication, not data collection (for that, use Field_Photo_Collector_Universal from the same repository). Works well for teams running several parallel n8n flows against a shared data source; not needed when there is no concurrency and duplication is not a concern.