Which statement best describes the two object store types and their purpose?

• A. Global object store can share state between components in a Mule application; Private object store is used when sharing data between components in the flow is deemed a security risk
• B. Private object store can share state between components in the Mule application; Global object store is used only for OSv2 between cluster workers
• C. Global object store is used for caching data locally within a single Mule component
• D. Private object store and Global object store are the same

Answer: (A)

In Mule, object stores provide a place to cache and share state across processing steps. There are two scopes to understand: Global and Private. The global object store is accessible by multiple components within the Mule runtime, so it’s used when you need to pass or reuse data across different parts of your application (and, with OSv2, can even be shared across cluster workers). The private object store, by contrast, is isolated to a single application or flow, and is not shared with other components or apps. This isolation makes it suitable for data that you don’t want exposed or accessible outside the specific flow or component, addressing security or isolation concerns.

So the statement that the global object store shares state between components, while the private object store is chosen when sharing data across components in the flow is considered a security risk, accurately captures how these stores are intended to be used. The other ideas—private stores sharing state, global stores only for local caching, or the two stores being the same—do not fit how object stores are designed to function.