GoDataBases

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