H4midR commented :
2 Notes : that may cues this.
Max Open File was 1024 ;
*referring to official documentation it’s better to be 65535 .
the server configuration is not enogph:
low Memory which cues some daily Out Of Memory Crash
*the recommended minimum is 8GB.
is it just it or other thing may inflect it too?
there are some bigger projects who are working fine with Dgraph which can be count this as one.