We reported this same issue (in the Frankfurt region) to Render on July 13th via this forum: Daily web services outages in Frankfurt region.
After mentioning DDOS attacks, they told us they had implemented a “fix” and performed infrastructure upgrades in late July/early August. It did not fix the outages.
On August 23rd we emailed firstname.lastname@example.org (ticket #18792) as requested by @John_B and @al_ps. After providing them with details about every incident we had, and arguing to convince them that those outages were not due to load spikes or issues on our end, they finally admitted on September 30th that
a critical system component was unavailable: when failover occurred, some services were unreachable
On October 7th, they told us that it was fixed:
Yes, the root case is fixed now. With increased redundancy, any underlying machine failure will not make the system service unavailable. It still can happen if all machines are failed (for example, data center outage), but the chance is very low.
Sadly, the outages are still happening: we saw no improvements on our web services, quite the opposite to be honest. On October 12th, during 20 minutes almost all of our web services responded with 502 errors. Despite emails about every incident, we have had no news from email@example.com since then.
We migrated services from Heroku to Render in early May, and we have been experiencing those outages on our web services ever since. We have been reporting those for more than 3 months now, but they still have not found the root cause.
@Nathan_Woodhull @colinagile good luck! There are more and more reports about similar outages (e.g. by @jnns here, by @jerin_ceo here, by @Merovex here), so maybe Render will become aware of the seriousness of this issue.
The lack of communication is of course concerning. The fact that the Render status page never reports any of those 502 outages although they have been acknowledged by the support is disappointing.