Service Mesh and Observability at Scale Questions

Design and operational considerations for adopting service mesh technology and building observability for large microservice ecosystems. Topics include service discovery and naming, control of service to service communication, traffic routing and canary strategies, mutual transport layer security, circuit breaking and retry semantics, sidecar proxy patterns, control plane and data plane separation, and the operational costs of sidecar models. For observability, cover distributed tracing and context propagation, correlation identifiers, sampling strategies, high cardinality metric management, centralized telemetry pipelines, trace and span storage, and alerting patterns that scale. Candidates should be able to discuss trade offs, rollout strategies, impact on performance, and patterns for maintaining visibility across thousands of services.