CODEWITHSUNDEEP
azure
Slicc
Slicc

Reputation: 3435

Multiple apps in an Application Service Environment

I have an Azure ASE running with one web app in there. The ASE is configured with the minimum 2 frontend and 2 backend VMs.

I now want to add a second app into the ASE. Does this mean I need to increase the number of backend VMs, or can I use the existing 2 backend VMs to host both apps? I'm assuming both apps can use the same worker pool, but is that true also? Do I need to create two application service plans?

Upvotes: 0

Views: 1750

Answers (1)

evilSnobu
evilSnobu

Reputation: 26314

The resource pool for your Web Apps is the App Service Plan. In the context of an ASE, the App Service Plan is a dotted line and enforces compute resource boundaries. The real compute resources ("hardware") reside in Worker Pools. An App Service Plan can span 1 or more instances in a Worker Pool.

Here's a bird's eye view:

             WORKER POOL 1
   **********************************
   *                                *
   *      App Service Plan "A"      *
   *     +--------------------+     *
   *     |      Web App 1     |     *
   *     |      Web App 2     |     *
   *     |      API App 1     |     *
   *     |      API App 2     |     *
   *     +--------------------+     *
   *                                *
   **********************************


             WORKER POOL 2
   **********************************
   *                                *
   *      App Service Plan "B"      *
   *     +--------------------+     *
   *     |      Web App 3     |     *
   *     |      API App 3     |     *
   *     +--------------------+     *
   *                                *
   **********************************

You can mix and match, i.e. Worker Pool 1 (3 instances) could host both App Service Plan A (let's say 2 instances) and App Service Plan B (1 instance).

App Service Environment v2 will get rid of worker pools and make scaling out straight forward

Upvotes: 1

Related Questions