Boston University 2020 Types of streams • Base stream: produced by an external source • e.g. TCP packet stream • Derived stream: produced by e.g. total traffic from a source every minute packet generation time bytes in packet total bytes this minute minute start or end 16 Vasiliki Kalavri | Boston University

Edge events: A purchase, a movie rating, a like on an online post, a bitcoin transaction, a packet routed from a source to destination Vertex events: A new product, a new movie, a user ??? Vasiliki