An Open-Source Cloud Architecture for Big Stream IoT Applications - Interoperability and Open-Source Solutions for the Internet of Things - page 75

Fig. 2. The proposed listener-based Graph architecture. The nodes of the graph are
listeners, the edges represent the dynamic flow of information data streams.
can be dynamically routed in the network by following the edges of the graph
and allowing to switch-off nodes (if processing units are not required) and repli-
cate nodes (if processing units are required by a significant number of listeners).
Figure 3 illustrates the components defining the proposed system and the rela-
tionships between each element. The next subsections describe in detail all the
building blocks. The complete architecture is shown in Fig. 4 .
Fig. 3. Components of the proposed Graph Cloud architecture and relations between
each element.