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weibocom / wqs

微博的消息服务中间件。
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Multi-IDC support #12

Open icycrystal4 opened 8 years ago

icycrystal4 commented 8 years ago

In many high availability scenarios, whole datacenter crash is supposed to happen any time. So many applications are build cross multiple IDCs, every single data center services a portion of traffics and accommodates the whole complete data. Every IDC will sync the traffic to the other data centers.
As a queue service, WQS should provide a abstract layer, so that the application developer programming cross multi-IDCs is as easy as single IDC.

  1. producing a message is as fast as locally
  2. consuming a message is as fast as locally
  3. consuming latency is in a tolerable level
  4. the throughput is as high as locally
  5. the data stability is the same as locally