I got same problem on Windows Server 2016 and on Linux Debian 8.5.
I have few very simple backend based on vibed 0.8.1, compiler dmd
2.075.1.
nginx servise is do port forwarding. Nothing more is used.
After several days of working I am begining to get "502 Bad
Gateway" error. The service is not down, it's continue to
working, but on Windows task manager I seen very low memory usage
(0.4MB) and on Linux I see next: https://snag.gy/ban3jX.jpg (i am
not familiar with Linux and do not sure if process is alive or
not because htop do not show it)
The code is *very* simple https://github.com/bubnenkoff/dlang.ru
Is there any ideas how to diagnostic the problem?