"Our networking clients have well tested request back-off behaviors that are designed to allow our systems to recover from these sorts of congestion events, but

"Our networking clients have well tested request back-off behaviors that are designed to allow our systems to recover from these sorts of congestion events, but, a latent issue prevented these clients from adequately backing off during this event. " That is an interesting way to phrase that. A 'well-tested' method, but 'latent issues'. That would imply the 'well-tested' part was not as well-tested as it needed to be. I guess 'latent issue' is the new 'bug'.