Сompetition review

Name	traefik	NGINX	Varnish	sidecache	krakend	envoy [2]
Edition	Enterprise	Community [1]	Community [1]	Community	Community	Community
In-memory storage	+	+	+	-	+	+
Distributed DB	-	+ (with module)	-	Couchbase	-	-
Can be persistent	-	+	+	+	-	-
Support	+	+	+	-	+	+
Сonfiguration complexity (0-5)	1	3	4	1	2	1
Dogpile effect prevention	?	?	?	?	?	?
Stale cache	?	?	?	?	?	?

1. There is an enterprise version
2. "This extension is work-in-progress. Functionality is incomplete and it is not intended for production use." source