Use cached copy of hash ring in api service

Registered by Zhenguo Niu on 2015-11-27

Currently, the API service resets the hash ring on every request, which would cause low performance in production environment. As we already cached the hash ring object, and recently introduced a way to refresh it during a interval, there could be some opportunities to reduce the db request.

Blueprint information

Status:
Not started
Approver:
aeva black
Priority:
Undefined
Drafter:
Zhenguo Niu
Direction:
Needs approval
Assignee:
Zhenguo Niu
Definition:
New
Series goal:
None
Implementation:
Unknown
Milestone target:
None

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