---
title: Demo Features
linkTitle: Features
aliases: [/docs/demo/demo_features]
---

- **[Kubernetes](https://kubernetes.io/)**: the app is designed to run on
  Kubernetes (both locally, as well as on the cloud) using a Helm chart.
- **[Docker](https://docs.docker.com)**: this forked sample can also be executed
  only with Docker.
- **[gRPC](https://grpc.io/)**: microservices use a high volume of gRPC calls to
  communicate to each other.
- **[HTTP](https://www.rfc-editor.org/rfc/rfc9110.html)**: microservices use
  HTTP where gRPC is unavailable or not well supported.
- **[OpenTelemetry Traces](/docs/concepts/signals/traces/)**: all services are
  instrumented using OpenTelemetry available instrumentation libraries.
- **[OpenTelemetry Metrics](/docs/concepts/signals/metrics/)**: Select services
  are instrumented using OpenTelemetry available instrumentation libraries. More
  will be added as the relevant SDKs are released.
- **[OpenTelemetry Collector](/docs/collector/)**: all services are instrumented
  and sending the generated traces and metrics to the OpenTelemetry Collector
  via gRPC. The received traces are then exported to the logs and to Jaeger;
  received metrics and exemplars[^1] are exported to logs and Prometheus.
- **[Jaeger](https://www.jaegertracing.io/)**: all generated traces are being
  sent to Jaeger.
- **Synthetic Load Generation**: the application demo comes with a background
  job that creates realistic usage patterns on the website using
  [Locust](https://locust.io/) load generator.
- **[Prometheus](https://prometheus.io/)**: all generated metrics and exemplars
  are scraped by Prometheus.
- **[Grafana](https://grafana.com/)**: all metric dashboards are stored in
  Grafana.
- **[Envoy](https://www.envoyproxy.io/)**: Envoy is used as a reverse proxy for
  user-facing web interfaces such as the frontend, load generator, and feature
  flag service.

[^1]:
    Only exemplars attached to histograms are currently exported to Prometheus.
    For details, see [Collector issue #18201][].

[Collector issue #18201]:
  https://github.com/open-telemetry/opentelemetry-collector-contrib/issues/18201