add the scalability for the docker image (#452)

Co-authored-by: Tobias Allweier <[email protected]>

README.md

@@ -137,6 +137,18 @@ See the [Oryx documentation](https://github.com/microsoft/Oryx/blob/main/doc/con
 
 After adding the settings, be sure to save the configuration and then restart your app.
 
+For apps published with `One click Azure deployment` you can increase your app's ability to handle concurrent requests from multiple users with the following steps:
+1. Upgrade your App Service plan tier to a higher tier, for example tiers with more than one vCPU.
+
+2. Configure the following app settings on your App Service in the Azure Portal:
+- `UWSGI_PROCESSES`: 5 (may be higher or lower depending on your App Service Plan tier)
+- `UWSGI_THREADS`: 5 (may be higher or lower depending on your App Service Plan tier)
+
+After adding the settings, be sure to save the configuration and then restart your app.
+
+> In case you build your own docker image based on the `WebApp.Dockerfile` and host it in a App Serice, you can also increase your app's ability to handle concurrent requests from multiple users with the above steps.
+When you host your container not in an App Service you can add this seetings as container environment variable.
+
 ### Debugging your deployed app
 First, add an environment variable on the app service resource called "DEBUG". Set this to "true".
 

WebApp.Dockerfile

@@ -27,5 +27,7 @@ RUN pip install --no-cache-dir -r /usr/src/app/requirements.txt \
 COPY . /usr/src/app/  
 COPY --from=frontend /home/node/app/static  /usr/src/app/static/
 WORKDIR /usr/src/app  
+ENV UWSGI_PROCESSES=2
+ENV UWSGI_THREADS=1
 EXPOSE 80  
-CMD ["uwsgi", "--http", ":80", "--wsgi-file", "app.py", "--callable", "app", "-b","32768"]  
+CMD uwsgi --processes $UWSGI_PROCESSES --threads $UWSGI_THREADS --http :80 --wsgi-file app.py --callable app -b 32768

infrastructure/deployment.json

@@ -578,7 +578,15 @@
                         {
                             "name": "ELASTICSEARCH_EMBEDDING_MODEL_ID",
                             "value": "[parameters('ElasticsearchEmbeddingModelId')]"
-                        }
+                        },
+                        {
+                            "name": "UWSGI_PROCESSES",
+                            "value": "2"
+                        },
+                        {
+                            "name": "UWSGI_THREADS",
+                            "value": "2"
+                        }                        
                     ],
                     "linuxFxVersion": "[variables('WebAppImageName')]"
                 }