Mezmo change history: Intermittent delays loading Web UI and running searches

Mezmo reported a major degradation affecting Livetail, Search and Web App from 2023-02-06 20:48 UTC to 2023-02-07 02:07 UTC, lasting 5 h 18 min. Searches were slow or returned no results, and the Web UI was intermittently unresponsive; all search data access was restored. No data was lost, and ingestion was not halted.