# microservices-demo
**Repository Path**: github-5407963/microservices-demo
## Basic Information
- **Project Name**: microservices-demo
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No
## Statistics
- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-03-10
- **Last Updated**: 2021-03-10
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
**Online Boutique** is a cloud-native microservices demo application.
Online Boutique consists of a 10-tier microservices application. The application is a
web-based e-commerce app where users can browse items,
add them to the cart, and purchase them.
**Google uses this application to demonstrate use of technologies like
Kubernetes/GKE, Istio, Stackdriver, gRPC and OpenCensus**. This application
works on any Kubernetes cluster, as well as Google
Kubernetes Engine. It’s **easy to deploy with little to no configuration**.
If you’re using this demo, please **★Star** this repository to show your interest!
> 👓**Note to Googlers:** Please fill out the form at
> [go/microservices-demo](http://go/microservices-demo) if you are using this
> application.
Looking for the old Hipster Shop frontend interface? Use the [manifests](https://github.com/GoogleCloudPlatform/microservices-demo/tree/v0.1.5/kubernetes-manifests) in release [v0.1.5](https://github.com/GoogleCloudPlatform/microservices-demo/releases/v0.1.5).
## Screenshots
| Home Page | Checkout Screen |
| ----------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------ |
| [](./docs/img/online-boutique-frontend-1.png) | [](./docs/img/online-boutique-frontend-2.png) |
## Quickstart (GKE)
[](https://ssh.cloud.google.com/cloudshell/editor?cloudshell_git_repo=https://github.com/GoogleCloudPlatform/microservices-demo&cloudshell_tutorial=README.md)
1. **[Create a Google Cloud Platform project](https://cloud.google.com/resource-manager/docs/creating-managing-projects#creating_a_project)** or use an existing project. Set the `PROJECT_ID` environment variable and ensure the Google Kubernetes Engine and Cloud Operations APIs are enabled.
```
PROJECT_ID=""
gcloud services enable container.googleapis.com --project ${PROJECT_ID}
gcloud services enable monitoring.googleapis.com \
cloudtrace.googleapis.com \
clouddebugger.googleapis.com \
cloudprofiler.googleapis.com \
--project ${PROJECT_ID}
```
2. **Clone this repository.**
```
git clone https://github.com/GoogleCloudPlatform/microservices-demo.git
cd microservices-demo
```
3. **Create a GKE cluster.**
```
ZONE=us-central1-b
gcloud container clusters create onlineboutique \
--project=${PROJECT_ID} --zone=${ZONE} \
--machine-type=e2-standard-2 --num-nodes=4
```
4. **Deploy the sample app to the cluster.**
```
kubectl apply -f ./release/kubernetes-manifests.yaml
```
5. **Wait for the Pods to be ready.**
```
kubectl get pods
```
After a few minutes, you should see:
```
NAME READY STATUS RESTARTS AGE
adservice-76bdd69666-ckc5j 1/1 Running 0 2m58s
cartservice-66d497c6b7-dp5jr 1/1 Running 0 2m59s
checkoutservice-666c784bd6-4jd22 1/1 Running 0 3m1s
currencyservice-5d5d496984-4jmd7 1/1 Running 0 2m59s
emailservice-667457d9d6-75jcq 1/1 Running 0 3m2s
frontend-6b8d69b9fb-wjqdg 1/1 Running 0 3m1s
loadgenerator-665b5cd444-gwqdq 1/1 Running 0 3m
paymentservice-68596d6dd6-bf6bv 1/1 Running 0 3m
productcatalogservice-557d474574-888kr 1/1 Running 0 3m
recommendationservice-69c56b74d4-7z8r5 1/1 Running 0 3m1s
redis-cart-5f59546cdd-5jnqf 1/1 Running 0 2m58s
shippingservice-6ccc89f8fd-v686r 1/1 Running 0 2m58s
```
7. **Access the web frontend in a browser** using the frontend's `EXTERNAL_IP`.
```
kubectl get service frontend-external | awk '{print $4}'
```
*Example output - do not copy*
```
EXTERNAL-IP
```
**Note**- you may see `` while GCP provisions the load balancer. If this happens, wait a few minutes and re-run the command.
8. [Optional] **Clean up**:
```
gcloud container clusters delete onlineboutique \
--project=${PROJECT_ID} --zone=${ZONE}
```
## Other Deployment Options
- **Workload Identity**: [See these instructions.](docs/workload-identity.md)
- **Istio**: [See these instructions.](docs/service-mesh.md)
- **Anthos Service Mesh**: ASM requires Workload Identity to be enabled in your GKE cluster. [See the workload identity instructions](docs/workload-identity.md) to configure and deploy the app. Then, use the [service mesh guide](/docs/service-mesh.md).
- **non-GKE clusters (Minikube, Kind)**: see the [Development Guide](/docs/development-guide.md)
- **Memorystore**: [See these instructions](/docs/memorystore.md) to replace the in-cluster `redis` database with hosted Google Cloud Memorystore (redis).
## Architecture
**Online Boutique** is composed of 11 microservices written in different
languages that talk to each other over gRPC. See the [Development Principles](/docs/development-principles.md) doc for more information.
[](./docs/img/architecture-diagram.png)
Find **Protocol Buffers Descriptions** at the [`./pb` directory](./pb).
| Service | Language | Description |
| ---------------------------------------------------- | ------------- | --------------------------------------------------------------------------------------------------------------------------------- |
| [frontend](./src/frontend) | Go | Exposes an HTTP server to serve the website. Does not require signup/login and generates session IDs for all users automatically. |
| [cartservice](./src/cartservice) | C# | Stores the items in the user's shopping cart in Redis and retrieves it. |
| [productcatalogservice](./src/productcatalogservice) | Go | Provides the list of products from a JSON file and ability to search products and get individual products. |
| [currencyservice](./src/currencyservice) | Node.js | Converts one money amount to another currency. Uses real values fetched from European Central Bank. It's the highest QPS service. |
| [paymentservice](./src/paymentservice) | Node.js | Charges the given credit card info (mock) with the given amount and returns a transaction ID. |
| [shippingservice](./src/shippingservice) | Go | Gives shipping cost estimates based on the shopping cart. Ships items to the given address (mock) |
| [emailservice](./src/emailservice) | Python | Sends users an order confirmation email (mock). |
| [checkoutservice](./src/checkoutservice) | Go | Retrieves user cart, prepares order and orchestrates the payment, shipping and the email notification. |
| [recommendationservice](./src/recommendationservice) | Python | Recommends other products based on what's given in the cart. |
| [adservice](./src/adservice) | Java | Provides text ads based on given context words. |
| [loadgenerator](./src/loadgenerator) | Python/Locust | Continuously sends requests imitating realistic user shopping flows to the frontend. |
## Features
- **[Kubernetes](https://kubernetes.io)/[GKE](https://cloud.google.com/kubernetes-engine/):**
The app is designed to run on Kubernetes (both locally on "Docker for
Desktop", as well as on the cloud with GKE).
- **[gRPC](https://grpc.io):** Microservices use a high volume of gRPC calls to
communicate to each other.
- **[Istio](https://istio.io):** Application works on Istio service mesh.
- **[OpenCensus](https://opencensus.io/) Tracing:** Most services are
instrumented using OpenCensus trace interceptors for gRPC/HTTP.
- **[Cloud Operations (Stackdriver)](https://cloud.google.com/products/operations):** Many services
are instrumented with **Profiling**, **Tracing** and **Debugging**. In
addition to these, using Istio enables features like Request/Response
**Metrics** and **Context Graph** out of the box. When it is running out of
Google Cloud, this code path remains inactive.
- **[Skaffold](https://skaffold.dev):** Application
is deployed to Kubernetes with a single command using Skaffold.
- **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.
## Local Development
If you would like to contribute features or fixes to this app, see the [Development Guide](/docs/development-guide.md) on how to build this demo locally.
## Demos featuring Online Boutique
- [Take the first step toward SRE with Cloud Operations Sandbox](https://cloud.google.com/blog/products/operations/on-the-road-to-sre-with-cloud-operations-sandbox)
- [Deploying the Online Boutique sample application on Anthos Service Mesh](https://cloud.google.com/service-mesh/docs/onlineboutique-install-kpt)
- [Anthos Service Mesh Workshop: Lab Guide](https://codelabs.developers.google.com/codelabs/anthos-service-mesh-workshop)
- [KubeCon EU 2019 - Reinventing Networking: A Deep Dive into Istio's Multicluster Gateways - Steve Dake, Independent](https://youtu.be/-t2BfT59zJA?t=982)
- Google Cloud Next'18 SF
- [Day 1 Keynote](https://youtu.be/vJ9OaAqfxo4?t=2416) showing GKE On-Prem
- [Day 3 Keynote](https://youtu.be/JQPOPV_VH5w?t=815) showing Stackdriver
APM (Tracing, Code Search, Profiler, Google Cloud Build)
- [Introduction to Service Management with Istio](https://www.youtube.com/watch?v=wCJrdKdD6UM&feature=youtu.be&t=586)
- [Google Cloud Next'18 London – Keynote](https://youtu.be/nIq2pkNcfEI?t=3071)
showing Stackdriver Incident Response Management
---
This is not an official Google project.