Why should you not use file-based persistence for a Mule application on CloudHub?

Why should you not use file-based persistence for a Mule application on CloudHub?

• A. Mule applications have unlimited and persistent file system access
• B. The file connector can access any folder such as /etc
• C. CloudHub provides built-in long-term file-based persistence
• D. CloudHub restricts file system access and persistence is ephemeral

Answer: (D)

In CloudHub, the file system is not a durable storage option. The runtime runs in containers with ephemeral disks, and local files can be lost when a worker restarts, scales, or moves. Because each worker often has its own isolated filesystem and there’s no guaranteed shared, long-term storage, relying on file-based persistence can lead to data loss and inconsistent state. To ensure durability, use external persistence such as databases or cloud storage (for example, a database, S3/Blob storage, etc.) and store state or large artifacts there instead of the local filesystem. CloudHub also restricts access to the underlying file system, so the idea of broad, unrestricted file access (like rooting into folders such as /etc) isn’t allowed. That’s why persistent file-based storage isn’t suitable on CloudHub.

In CloudHub, the file system is not a durable storage option. The runtime runs in containers with ephemeral disks, and local files can be lost when a worker restarts, scales, or moves. Because each worker often has its own isolated filesystem and there’s no guaranteed shared, long-term storage, relying on file-based persistence can lead to data loss and inconsistent state. To ensure durability, use external persistence such as databases or cloud storage (for example, a database, S3/Blob storage, etc.) and store state or large artifacts there instead of the local filesystem. CloudHub also restricts access to the underlying file system, so the idea of broad, unrestricted file access (like rooting into folders such as /etc) isn’t allowed. That’s why persistent file-based storage isn’t suitable on CloudHub.