A sample webapp deployed on app service with cosmos db as database. It counts the number of visitors visiting the page and inserts the same into a sample collection in Cosmos DB.
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In your terminal window, log into Azure and set a subscription(subscription which would contain the webapp) :
az login az account set -s mySubscriptionName -
Clone the sample application's source repository. The sample application is a Node.js app consisting of an Azure App Service web component and a Cosmos DB database. The repo also contains a PowerShell script that deploys the sample app to your Azure subscription.
git clone https://github.com/Azure-Samples/nodejs-appsvc-cosmosdb-bottleneck.git -
Deploy the sample app using the PowerShell script. (Tip: macOS users can install PowerShell here)
cd SampleApp .\deploymentscript.ps1 -
You will be prompted to supply a unique application name and a location (default is
eastus). A resource group for the resources would be created with the same name. -
Once deployment is complete, browse to the running sample application with your browser.
https://<app_name>.azurewebsites.net
POST /add accepts a whole number in the request body and inserts that many records. To prevent a small anonymous request from being amplified into an unbounded number of database operations, the endpoint is bounded by two settings in config.json:
| Setting | Default | Description |
|---|---|---|
maxEntriesPerRequest |
1000 |
Largest number of records a single POST /add may insert. Requests outside 0–maxEntriesPerRequest, or with a non-numeric body, are rejected with 400. |
maxRequestBodyBytes |
1024 |
Largest request body accepted before the connection is dropped with 413. |
Raise these values deliberately if you need heavier load-test runs; leaving them unbounded exposes the app to resource-exhaustion attacks.
You may want to delete the resources to avoid to continue incurring charges. Use the az group delete command to remove the resource group and all related resources.
az group delete --name myResourceGroup
Similarly, you can utilize the Delete resource group toolbar button on the sample application's resource group to remove all the resources.