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catalog:
  - name: "Welcome"
    path: "/readme"
  - name: "Concepts and Designs"
    catalog:
      - name: "What is SkyWalking?"
        catalog:
          - name: "Overview and Core concepts"
            path: "/en/concepts-and-designs/overview"
          - name: "Project Goals"
            path: "/en/concepts-and-designs/project-goals"
      - name: "Probe"
        catalog:
          - name: "Introduction"
            path: "/en/concepts-and-designs/probe-introduction"
          - name: "Service Auto Instrument Agent"
            path: "/en/concepts-and-designs/service-agent"
          - name: "Manual Instrument SDK"
            path: "/en/concepts-and-designs/manual-sdk"
          - name: "Service Mesh probe"
            path: "/en/concepts-and-designs/service-mesh-probe"
      - name: "Backend"
        catalog:
          - name: "Overview"
            path: "/en/concepts-and-designs/backend-overview"
          - name: "Observability Analysis Language"
            path: "/en/concepts-and-designs/oal"
          - name: "Meter Analysis Language"
            path: "/en/concepts-and-designs/mal"
          - name: "Log Analysis Language"
            path: "/en/concepts-and-designs/lal"
          - name: "Query in OAP"
            path: "/en/protocols/readme#query-protocol"
      - name: "UI"
        path: "/en/concepts-and-designs/ui-overview"
      - name: "CLI"
        path: "https://github.com/apache/skywalking-cli"
      - name: "Event"
        path: "/en/concepts-and-designs/event/"

  - name: "Setup"
    catalog:
      - name: "Java agent"
        catalog:
        - name: "Setup"
          path: "/en/setup/service-agent/java-agent/readme"
        - name: "Setup in Docker"
          path: "/en/setup/service-agent/java-agent/containerization#docker"
        - name: "Setup in Kubernetes"
          path: "/en/setup/service-agent/java-agent/containerization#kubernetes"
        - name: "Supported middleware, framework and library"
          path: "/en/setup/service-agent/java-agent/Supported-list"
        - name: "Agent Configuration Properties"
          path: "/en/setup/service-agent/java-agent/readme#table-of-agent-configuration-properties"
        - name: "Dynamic Configurations"
          path: "/en/setup/service-agent/java-agent/readme#dynamic-configurations"
        - name: "Optional Plugins"
          path: "/en/setup/service-agent/java-agent/readme#optional-plugins"
        - name: "Bootstrap/JVM class plugin"
          path: "/en/setup/service-agent/java-agent/readme#bootstrap-class-plugins"
        - name: "Logic Endpoint"
          path: "/en/setup/service-agent/java-agent/readme/#the-logic-endpoint"
        - name: "Advanced Features"
          catalog:
            - name: "Guidance"
              path: "/en/setup/service-agent/java-agent/readme/#advanced-features"
            - name: "Setting Override"
              path: "/en/setup/service-agent/java-agent/setting-override"
            - name: "Transport Layer Security (TLS)"
              path: "/en/setup/service-agent/java-agent/tls"
            - name: "Namespace Isolation"
              path: "/en/setup/service-agent/java-agent/namespace"
            - name: "Token Authentication"
              path: "/en/setup/service-agent/java-agent/token-auth"
            - name: "Manual APIs"
              catalog:
                - name: "Tracing APIs"
                  path: "/en/setup/service-agent/java-agent/application-toolkit-trace"
                - name: "OpenTracing Tracer"
                  path: "/en/setup/service-agent/java-agent/opentracing"
                - name: "Meter APIs"
                  path: "/en/setup/service-agent/java-agent/application-toolkit-meter"
                - name: "Across Thread Solution"
                  path: "/en/setup/service-agent/java-agent/application-toolkit-trace-cross-thread"
                - name: "MicroMeter Registry"
                  path: "/en/setup/service-agent/java-agent/application-toolkit-micrometer"
            - name: "Tolerate Custom Exceptions"
              path: "/en/setup/service-agent/java-agent/how-to-tolerate-exceptions"
            - name: "Log & Trace Correlation"
              catalog:
                - name: "Log4j"
                  path: "/en/setup/service-agent/java-agent/application-toolkit-log4j-1.x"
                - name: "Log4j2"
                  path: "/en/setup/service-agent/java-agent/application-toolkit-log4j-2.x"
                - name: "Logback"
                  path: "/en/setup/service-agent/java-agent/application-toolkit-logback-1.x/"
        - name: "Advanced reporters"
          path: "/en/setup/service-agent/java-agent/readme#advanced-reporters"
        - name: "Plugin development guide"
          path: "/en/guides/java-plugin-development-guide/"
        - name: "Java Agent Performance Test"
          path: "https://skyapmtest.github.io/Agent-Benchmarks/"
      - name: "Server Agents"
        path: "/en/setup/service-agent/server-agents"
      - name: "Browser Agent"
        path: "/en/setup/service-agent/browser-agent"
      - name: "Backend"
        catalog:
          - name: "Quick Start"
            path: "/en/setup/backend/backend-setup"
          - name: "Configuration Vocabulary"
            path: "/en/setup/backend/configuration-vocabulary"
          - name: "Advanced Setup"
            catalog:
            - name: "Service Grouping"
              path: "/en/setup/backend/service-auto-grouping"
            - name: "Overriding Settings"
              path: "/en/setup/backend/backend-setting-override"
            - name: "IP And Port Setting"
              path: "/en/setup/backend/backend-ip-port"
            - name: "Backend Init Mode Startup"
              path: "/en/setup/backend/backend-init-mode"
            - name: "Cluster Management"
              path: "/en/setup/backend/backend-cluster"
            - name: "Choose Storage"
              path: "/en/setup/backend/backend-storage"
            - name: "Set Receivers"
              path: "/en/setup/backend/backend-receivers"
            - name: "Open Fetchers"
              path: "/en/setup/backend/backend-fetcher"
            - name: "Advanced Deployment Options"
              path: "/en/setup/backend/advanced-deployment"
            - name: "Data Lifecycle. Time To Live (TTL)"
              path: "/en/setup/backend/ttl"
            - name: "Dynamical Logging"
              path: "/en/setup/backend/dynamical-logging"
          - name: "Deploy In Kubernetes"
            path: "/en/setup/backend/backend-k8s"
          - name: "Tracing"
            catalog:
              - name: "Trace Sampling"
                path: "/en/setup/backend/trace-sampling"
              - name: "Detect Slow Database Statement"
                path: "/en/setup/backend/slow-db-statement"
              - name: "Uninstrumented Gateways"
                path: "/en/setup/backend/uninstrumented-gateways"
          - name: "Metrics"
            catalog:
              - name: "OAL Scripts"
                path: "/en/guides/backend-oal-scripts"
              - name: "Group Parameterized Endpoints"
                path: "/en/setup/backend/endpoint-grouping-rules"
              - name: "OpenTelemetry Metrics Analysis"
                path: "/en/setup/backend/backend-receivers#opentelemetry-receiver"
              - name: "Meter Analysis"
                path: "/en/setup/backend/backend-meter"
              - name: "Apdex Threshold"
                path: "/en/setup/backend/apdex-threshold"
              - name: "Spring Sleuth Metrics Analysis"
                path: "/en/setup/backend/spring-sleuth-setup"
              - name: "Alarm"
                path: "/en/setup/backend/backend-alarm"
          - name: "Logging"
            catalog:
              - name: "Log Collecting And Analysis"
                path: "/en/setup/backend/log-analyzer"
          - name: "Self Observability"
            catalog:
              - name: "Backend Telemetry"
                path: "/en/setup/backend/backend-telemetry"
              - name: "Health Check"
                path: "/en/setup/backend/backend-health-check"
          - name: "Extension"
            catalog:
              - name: "Metrics Exporter"
                path: "/en/setup/backend/metrics-exporter"
              - name: "Dynamic Configuration"
                path: "/en/setup/backend/dynamic-config"
          - name: "Service Mesh"
            catalog:
              - name: "Observe Istio Control Plane"
                path: "/en/setup/istio/readme"
              - name: "Observe Service Mesh"
                path: "/en/setup/envoy/als_setting"
              - name: "Send Envoy Metrics to SkyWalking with / without Istio"
                path: "/en/setup/envoy/metrics_service_setting"
          - name: "Infrastructure Monitoring"
            catalog:
              - name: "VMs Monitoring"
                path: "/en/setup/backend/backend-vm-monitoring"
              - name: "K8s Monitoring"
                path: "/en/setup/backend/backend-k8s-monitoring"
      - name: "UI Setup"
        path: "/en/setup/backend/ui-setup"
      - name: "CLI Setup"
        path: "https://github.com/apache/skywalking-cli"
  - name: "UI Introduction"
    path: "/en/ui/readme"
  - name: "Contributing Guides"
    catalog:
      - name: "Contribute"
        path: "/en/guides/readme"
      - name: "Agent Plugin Development Guide"
        path: "/en/guides/Java-Plugin-Development-Guide"
      - name: "Become A Committer"
        path: "/en/guides/asf/committer"
      - name: "Release Guide"
        path: "/en/guides/how-to-release/"
      - name: "Compiling Guide"
        path: "/en/guides/How-to-build"
  - name: "Protocols"
    path: "/en/protocols/readme"
  - name: "FAQs"
    path: "/en/FAQ/readme"
  - name: "Changelog"
    path: "https://github.com/apache/skywalking/tree/master/changes"