Large app support

With large app support, you can work with apps that are larger than the standard app size. You can select one or more spaces in Qlik Cloud where you allow large apps.

Large app support gives you access to additional memory in the form of Qlik Sense engines. Qlik provides engines of different sizes in engine pools. Every app is loaded into an engine at runtime. An autoscaling mechanism dynamically allocates resources as needed and routes large apps to the best-suited engines. This ensures that you can work with an app even if it requires more resources than a single engine can provide.

The total amount of large app capacity determines how many apps larger than the standard app size that you can have open at the same time. Only the in-memory size of the app is counted, not the number of user sessions on each app.

With Qlik Sense Enterprise SaaS, Qlik Cloud Analytics Premium, and Qlik Cloud Enterprise, you can choose 20 GB and 100 GB packs of large app capacity. Mix and match packs to assign the right amount to your Qlik Cloud tenant. Qlik provides support for planning and provisioning capacity. Contact Qlik Sales for more information.

You can select one or more spaces to work with large apps. Administrators manage which spaces that allow large apps. For more information, see Managing spaces.

When using large apps, consider the following:

• The large app capacity is only used for apps that are larger than the standard app size in the space.

• Spaces allowing large apps will not be explicitly labeled as such in the Qlik Cloud catalog. We suggest using the space's description field to indicate that it is intended for storing large apps.
• Apps can be moved from a standard space to a space with large app support.
• Apps can be moved from a space with large app support to a standard space. However, you will not be able to open the app if it exceeds the standard in-memory limit. You can still download the app and view information about the app in activity centers.
• If large app support is removed from a space, the app will not be deleted. However, you will not be able to open the app if it exceeds the standard in-memory limit.

• Large app capacity usage counts each app instance that is open at the same time. For example, having a source app in your shared space and a published copy of that app in a managed space open at the same time count as two apps towards this capacity.

• When you open a large app, it counts against your large app capacity regardless of whether you open the app with or without data.

• When you reload data from a space with large app support, the reload will be run on that space.

  Information note

  When you create a new app, its size is initially unknown. To avoid any issues, run the initial reload via the Reload now option from the Analytics activity center. This will accurately determine the size of your app and ensure it is routed to the appropriate engine based on its size.

  For subsequent reloads, the memory limit depends on the previous reload size. If reloading directly from the Script Editor (DLE) fails because the app exceeds this limit, restart the reload from the DLE to redirect the app to a larger engine.

• The peak reload size for apps in spaces without large app support is up to 34 GB. If a reload exceeds this limit, move the app to a space that allows large apps.

• Total capacity: View the total large app capacity assigned to your tenant on the Home pane under Capabilities.

• Current usage: The Large app utilization chart on the Home pane shows the current usage and the peak capacity for the day. For more information, see Monitoring resource consumption.

• Spaces allowing large apps: Identify spaces configured for large apps in the Allow large apps column on the Spaces pane.

• App sizes: Check the sizes of specific apps on the Apps tab of the Content pane.

  Information note

  You can use the App Analyzer app to monitor in-memory app size and track memory usage over time.

  The App Analyzer is part of the Qlik Cloud Monitoring Apps, which are community-supported. This means that they are not supported by Qlik. To quickly install and update these apps, use the Qlik Cloud Monitoring Apps Installer with Qlik Application Automation. For details on installation and support, see App Installers.

  For more information about the App Analyzer, see:

  • Qlik Community: The App Analyzer for Qlik Cloud Customers

  • GitHub: Qlik Cloud App Analyzer

If you have less than 50 GB of total large app capacity assigned to your Qlik Cloud tenant, the maximum supported app size is equal to the assigned capacity. The table shows the supported app size when the total large app capacity is 20, 40, or 50 GB.

How much capacity do you need?

Example: Calculating total large app capacity

For example, let's say that you have five apps that are larger than the standard app size. The average size of the apps is 15 GB. You want to use all five apps at the same time, which means that you need 5 x 15 GB = 75 GB of capacity.

To achieve this, you could assign four packs of 20 GB to your tenant. Or, you might want to purchase one pack of 100 GB to have a buffer if more large apps are added in the future.