Starting on June 10 at 12:30 PM ET users began experiencing intermittent issues with users not being able to search. This issue recurred on June 11, July 8 and July 9 lasting between 1 and 10 hours in each instance. The last incident was resolved on July 9 at approximately 10:45 PM ET.
Users experienced the following issue on the dates mentioned above:
We resolved the search issues described above through the following fixes:
Fixed a defect that resulted in large numbers of unnecessary queries
Optimized search query performance
Separating search queries and removing unnecessary re-querying of data
Removing unnecessary data from search results
Optimized search indexing performance
Performing indexing in bulk
In order to mitigate recurrence of the future we deployed the fixes described above in addition to establishing enhanced monitoring to proactively address these issues should they arise again in the future.