Just a Router

A distributed data collecting systems(especially for realtime or offline logs). features: integration with the distributed coordinating system --- zookeeper, to provide group services.

high scalability

easily horizontal expanding.

high performance

billions of messages per day is okay.

high flexibility

routing configuration is very flexible: messages transfering can use many modes such as multi-send(any|all), mem/disk buffering send.

fault tolerant

if one server die, client will detect this very soon, and retry another server. if all servers in a group died, client can buffering for a while, and periodically retry.

A Typical Use case --- data aggregation across Multi-Datacenter