A mock framework is a tool that allows creating mock objects that simulate the behavior of real objects in a controlled way. A mock framework can be used in a unit test to inject the EmployeeService dependency into the CalculationService and verify its interactions. This way, the unit test can focus on testing the logic of the CalculationService without relying on the actual implementation of the EmployeeService.References:
https://sling.apache.org/documentation/development/sling-testing-tools.htmlhttps://wcm.io/testing/aem-mock/usa

The @Component(service = ConfigurationFactory.class) @Designate(ocd =
ConfigurationFactorylmpl.Config.class,factory=true) option is recommended for creating a multi-tenancy configuration and binding multiple configurations to it. This option uses the OSGi R6 annotations to define a component that provides a service of type ConfigurationFactory and designates a class that contains the configuration properties. The factory=true attribute indicates that multiple configurations can be created for this component.
References:https://experienceleague.adobe.com/docs/experience-manager-65/deploying/configuring/osgi-configu

Explanation
Creating a heap dump and a thread dump are two steps that should be taken after confirming the problem is related to a memory issue. A heap dump is a snapshot of the memory usage of the Java Virtual Machine (JVM) at a given point in time. A heap dump can be used to identify memory leaks, memory consumption patterns, and objects that occupy large amounts of memory. A thread dump is a snapshot of the state of all threads that are part of the JVM process. A thread dump can be used to identify deadlocks, blocked threads, and CPU-intensive threads. References:
https://experienceleague.adobe.com/docs/experience-manager-65/deploying/configuring/memory-analysis.html?

Explanation
The recommended path to override /libs standard functionality is /apps. The /apps folder contains application-specific code and configuration that can extend or override the default functionality provided by
/libs. The /apps folder has precedence over the /libs folder, meaning that if there are two resources with the same path under both folders, the one under /apps will be used. References:
https://experienceleague.adobe.com/docs/experience-manager-cloud-service/implementing/developing/aem-proje

The JAAS Control flag SUFFICIENT is used when you have multiple LDAP authentication providers and you want the following behavior:
* Immediate Return on Success:
* If authentication succeeds with the current provider, control is returned to the caller immediately, and no subsequent providers in the list are executed.
* This is efficient and reduces unnecessary processing if a user's credentials are successfully authenticated by one of the initial providers.
* Continue on Failure:
* If authentication fails with the current provider, the authentication process continues down the list of providers until a successful authentication occurs or all providers are exhausted.
* This ensures that all available providers are tried before authentication is ultimately denied.
The SUFFICIENT control flag is thus well-suited for configurations where multiple authentication providers are used, and only one successful authentication is needed to grant access.
References:
* Apache Jackrabbit Oak Documentation
* JAAS Control Flags