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LinkedIn’s production stack is made up of over 900 applications, 2200 internal API’s and hundreds of databases. With any given application having many interconnected pieces, it is difficult to escalate to the right person in a timely manner.
In order to combat this, LinkedIn built an Event Correlation Engine that monitors service health and maps dependencies between services to correctly escalate to the SRE’s who own the unhealthy service.
We’ll discuss the approach we used in building a correlation engine and how it has been used at LinkedIn to reduce incident impact and provide better quality of life to LinkedIn’s oncall engineers.