Enabling real-time antivirus scanning without asynchronous background scans

Issue

We would like to enable real-time antivirus scanning for uploaded files but disable asynchronous background scanning of the document library. The issue arises because:

• Enabling dl.store.antivirus.enabled=true triggers both real-time scanning and background scanning of the document library.
• Disabling dl.store.antivirus.enabled=false stops the real-time scanning on uploads but prevents background scans entirely.

Environment

• 2024.Q3.2

Resolution

Currently, Liferay does not provide an out-of-the-box (OOTB) option to completely disable the asynchronous background scan while keeping real-time upload scanning enabled. However, you can use the following workaround and set a long interval for background scans:

• Navigate to Control Panel > System Settings > Antivirus > Asynchronous Antivirus Configuration, and set the Batch Scan Cron Expression to an extremely long interval, such as:
  0 0 1 1 * ? 2099
  This schedules the background scan to run once on January 1, 2099.

• Enable Real-Time Scanning:
  Set dl.store.antivirus.enabled to true in order to maintain real-time scanning of uploaded files.

• Test and Monitor:
  Test the configuration in a non-production environment and monitor the logs to confirm no unexpected issues arise.