Relational vs. Horizontally Scalable Databases

The following table shows a comparison between three database technologies in terms of read and write performance.

DB	Typ	Performance
	Horizontally Scalable	Ingestion:     50.000 Values/sec (1 DB Node, 1 App Server) linear scaling Latency of Realtime queries:     < 1 sec Latency of agg. Queries:              < 2 sec Read: 150.000 Values/sec (1 DB Node, 1 App Server)
	Horizontally Scalable	Ingestion:           350.000 Values/sec (2 DB Nodes, 4 App Server) linear scaling Read: 250.000 Values/sec (2 DB Nodes, 4 App Server)
	Relational	Ingestion:           420.000 Values/sec (1 DB Nodes, 2 App Server) not scaling Read:    1.080.000 Values/sec (1 DB Node, 2 App Server)