- An HTTP 429 errors error occurs when too many requests have been sent to a content source in a given amount of time.
- These errors may occur when requesting data from certain content sources such as Microsoft Cloud Services (Sharepoint, OneDrive, O365, Azure AD), Box, Elasticsearch and others.
- The errors are retried automatically by Aspire and what Aspire does is waiting will waite a set amount of time before retrying, based on the error response header, or if this is not returned, on the configured parameters.
- This is a mitigation strategy and not a final fix since, in the end, the underlying problem is that the content source is not able to respond to the requests fast enough and as a result, sometimes a new crawl will be necessary to pick up items that failed completely.
- If HTTP 429 errors are happening too frequently, it might be worth it to place placing a throttling policy for the crawl, as described here.
{"serverDuration": 58, "requestCorrelationId": "4b0f03e577382ab8"}