Your observation is accurate: in Vikings: War of Clans, resource production ceases once a town's storage capacity is reached. This is particularly crucial for food, as it is consumed by troops and is essential for various in-game activities.

To monitor and manage your resource capacities effectively:

1. Access the Palace: Navigate to your Palace and select the "Statistics" tab.
2. Select a Resource: Choose a specific resource to view detailed information.
3. Review Capacities: At the top of the screen, you'll see:

"You have" – the current amount of the resource.

"Capacity: <name of the building>" – the maximum storage capacity of the resource.

"Capacity: Vault" – the total storage capacity, including the vault.

If "You have" exceeds the building's capacity, production will cease until the amount falls below the capacity threshold.