Recovering from surgery finally gave me time to update my last D6 site—a 7 year old private photo and media sharing site with nearly 10,000 nodes and 20+ GB of content—to Drupal 8.
During some migration operations on a Drupal 8 site, I needed to make an HTTP request that took > 30 seconds to return all the data... and when I ran the migration, I'd end up with exceptions like: