Architecture overview TerminologyListenersNetwork (L3/L4) filters HTTP protocolsRoute table configurationTimeouts HTTP routing Retry semanticsDirect responses gRPC services Handling H2 hops (implementation in progress) Old style Connection semantics Cluster warming Supported service discovery types Health checking Passive health checkingHTTP health checking filterHealth check identity HTTP/1.1Health checking interactions Supported load balancersOverprovisioning FactorPriority levelsLocality weighted load balancing Outlier detection Detection typesConfiguration reference Global rate limiting Underlying implementationAuthentication filter Runtime configuration OverviewTrace context propagation TCP proxy Access logging sinks MongoDBRedis Supported commands Hot restart Fully staticSDS/EDS and CDSSDS/EDS, CDS, RDS, and LDS DrainingExternal Authorization