Degraded record sync performance post-mortem

Post-incident summary

Date: 12–14 September 2026

Impact: Slower record syncs, with >1% failing on timeout and retrying. Most syncs completed successfully.

Status: Resolved

Summary

Our records database experienced progressive performance degradation over a period of roughly two days. Customers experienced slower sync runs, and a subset (>1%) of syncs failed with timeout errors and had to retry.

Most syncs continued to ...

2026-08-03 Missing logs

Summary

On August 3, 2026, Nango's log ingestion pipeline began rejecting writes because the index for that day had already transitioned to a read-only state.

Our investigation indicates that several Connect UI events were received from a browser whose system clock was approximately six days ahead. We accepted the client-provided timestamp without validation and used it to select the storage index, causing the August 3 index to be created prematurely. After 48 ...

Issues which were impacting SSO login have been addressed by the third-party integration. We have seen full recovery of the SSO login flow for the last 10–20 minutes.