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Presence Problems Revisited
Resource list server and conditional NOTIFY using entity-tags in SUBSCRIBE address 40% of total inter-domain presence traffic
NOTIFY = 60% of traffic
Traffic scaling
Access network
Low bandwidth (wireless)
Traffic bursts due to user synchronization
Inter-domain traffic
Steady-state NOTIFY message volume
Intra-domain traffic
Server scaling
Partial notify, privacy filtering, composition, … ? limited request rate per server
PPT Version