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Add support for separate read only TODB connection #6540

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@jhg03a

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@jhg03a

This Feature Request affects these Traffic Control components:

  • Traffic Ops

Description

I'd like to see TO be able to leverage a second TODB connection string for read operations. This allows TO to shed large portions of load from the single authoritative write TODB instance to multiple separate possibly geospacially closer RO replica TODB instances. In addition to taking that load away, it provides a more clear and enforceable line between read and write operations within TO. Lastly, it also provides a partial failure mode where TO can partially operate should the single authoritative TODB instance become unavailable.

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    Traffic Opsrelated to Traffic Opsdatabaserelating to setup/installation/structure of the Traffic Ops databasehigh difficultythe estimated level of effort to resolve this issue is highhigh impactimpacts the basic function, deployment, or operation of a CDNnew featureA new feature, capability or behaviorperformanceimpacts/improves/measures performance

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