Enhance README with deployment and logging details

Updated README.md with additional references and deployment details for Function App environment variables.

Author: brown9804

scenario1-high-decay/README.md

@@ -16,7 +16,12 @@ Last updated: 2025-08-27
 <summary><b>List of References</b> (Click to expand)</summary>
 
 - [Kudu service overview](https://learn.microsoft.com/en-us/azure/app-service/resources-kudu)
-  
+- [log levels types](https://learn.microsoft.com/en-us/azure/azure-functions/configure-monitoring?tabs=v2#configure-log-levels)
+- [How to configure monitoring for Azure Functions](https://learn.microsoft.com/en-us/azure/azure-functions/configure-monitoring?tabs=v2)
+- [host.json reference for Azure Functions 2.x and later](https://learn.microsoft.com/en-us/azure/azure-functions/functions-host-json#override-hostjson-values)
+- [Sampling overrides %](https://learn.microsoft.com/en-us/azure/azure-monitor/app/java-standalone-config#sampling-overrides)
+- [Sampling in Azure Monitor Application Insights with OpenTelemetry](https://learn.microsoft.com/en-us/azure/azure-monitor/app/opentelemetry-sampling)
+
 </details>
 
 > [!NOTE]
@@ -34,37 +39,69 @@ Last updated: 2025-08-27
   sku_name            = "P1v3"    
   ```
 
-- **Deployment Method**: Standard deployment (extracted .zip)
+    <img width="1908" height="842" alt="image" src="https://github.com/user-attachments/assets/fd5b96e4-be63-4319-b533-5c0fe18ec862" />
+
+- **Deployment Method (Function App Environment Variables)**: Standard deployment (extracted .zip)
 
   ```terraform
   # Force standard deployment instead of mounted package
   "WEBSITE_RUN_FROM_PACKAGE" = "0"
   ```
 
-- **Application Insights**: Full logging (no sampling)
+    <img width="1903" height="842" alt="image" src="https://github.com/user-attachments/assets/412aeee4-3c7d-43b6-82ea-87050e30f4fe" />
+
+- **Diagnostics Settings (Function App Environment Variables)**: Detailed diagnostics enabled
 
   ```terraform
-  # No sampling configured - full logging
-  sampling_percentage = 100
+  # Enable full diagnostics for troubleshooting
+  "WEBSITE_ENABLE_DETAILED_DIAGNOSTICS" = "true"
   ```
-- **Verbose Diagnostics**: Enabled
+
+    <img width="1917" height="796" alt="image" src="https://github.com/user-attachments/assets/bf8e1b7f-bc4a-4c1d-aced-e06f92df5185" />
+
+- **Logging Configuration (Function App Environment Variables)**: Verbose logging enabled. Click here to understand more about [log levels types](https://learn.microsoft.com/en-us/azure/azure-functions/configure-monitoring?tabs=v2#configure-log-levels)
 
   ```terraform
-  # Enable full diagnostics
-  "WEBSITE_ENABLE_DETAILED_DIAGNOSTICS" = "true"
+  # Set verbose logging level for better diagnostics but higher disk usage
+  "AzureFunctionsJobHost__logging__LogLevel__Default" = "Information"
+  ```
+
+    <img width="1898" height="828" alt="image" src="https://github.com/user-attachments/assets/6a10498c-fa5d-4e01-a392-0da31ae89cfb" />
+
+- **SCM Separation (Function App Environment Variables)**: Enabled to ensure Kudu and function app run as separate processes
+
+  ```terraform
+  # Enable SCM separation for diagnostics
+  "WEBSITE_DISABLE_SCM_SEPARATION" = "false"
   ```
 
-- **Storage Logging**: Enabled
+    <img width="1907" height="842" alt="image" src="https://github.com/user-attachments/assets/d2128b76-38e1-4e3a-af3f-835db68b428f" />
+
+- **Temp Access (Function App Environment Variables)**: Explicitly enabled for diagnostics and reporting
+
+  ```terraform
+  # Enable temp file access for diagnostics
+  "WEBSITE_ENABLE_TEMP_ACCESS" = "true"
+  ```
+
+    <img width="1907" height="841" alt="image" src="https://github.com/user-attachments/assets/9fbb1211-5d5c-4356-b18f-deef61963150" />
+
+> Overall:
+
+<img width="973" height="825" alt="image" src="https://github.com/user-attachments/assets/4563a3f1-7168-4b86-b629-6210e99b8f90" />
+
+- **Application Insights**: Full logging (no sampling). Click here to understand more about [Sampling overrides %](https://learn.microsoft.com/en-us/azure/azure-monitor/app/java-standalone-config#sampling-overrides)
 
   ```terraform
-  # Log to storage account (increases I/O operations)
-  "AzureWebJobsDashboard" = azurerm_storage_account.storage.primary_connection_string
+  # No sampling configured - full logging
+  sampling_percentage = 100
   ```
-- **WEBSITE_RUN_FROM_PACKAGE**: `Disabled (set to 0)`
+
+  <img width="1903" height="837" alt="image" src="https://github.com/user-attachments/assets/24197ef8-b302-480e-825b-4ddb34e18598" />
+
 - **Key Vault Integration**: Secrets stored in Azure Key Vault
 - **Managed Identity**: System-assigned identity for Key Vault access
 
-
 ## Deployment Instructions
 
 1. Please follow the [Terraform Deployment guide](./terraform-infrastructure/README.md) to deploy the necessary Azure resources for the workshop.