4 Stream graph
In this chapter
- stream fan-out
- stream fan-in
- graph and DAG (directed acyclic graph)
In the previous chapters, AJ has built a streaming job and then scaled it up. It works well for monitoring vehicles on the bridges. However, the structure of the job is quite simple, as the job is pretty much a list of operators. In this chapter, we are going to learn how to build more complicated streaming systems to solve additional problems in the real world.
“Bad programmers worry about the code. Good programmers worry about data structures and their relationships.”
—Linus Torvalds
A credit card fraud detection system
Sid has been impressed by the vehicle counting system AJ built, and he is thinking of new problems to solve with stream processing ...
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