find rider/driver near by
DB
query rider/driver by given location
pull
Dispatch Servie
save location asynch
data stream service (Hadoop/Spark)
Query1. Find available drivers by given location(S2 cell ID)2. Find available riders by given location(S2 cell ID)Index on location(S2 cell ID) for fast query
location data is updated frequentlylocation data needs to be indexed for fast query
KafKa
get matched driver by current location
redis cluster
Rider
save current location
redis
Location Servie
save current location asynch
Driver
get matched by rider current location
Hbase/Hive
