The Challenge The GitHub team had difficulty resolving an issue in their system: sporadic latency of 20-40 milliseconds with no visibility into where or why. Their engineers investigated it through their normal, manual methods, but they couldn’t identify the problem. None of those keys matched up because folks were using different logging formats. In all those cases, there was no normalization. It was really hard. The Solution Using Cloud Observability, their team found that the latency wasn't a part of their microservice but, rather, part of the GitHub Load Balancer (GLB). The GLB manages every interaction in the system and directs all traffic for both internal and external users, which meant this issue was directly affecting millions of developers.

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