In Hadoop ecosystem components, which primarily use the Apache Log4j logging framework, reaching a configured log file size limit triggers a process called log rotation. The standard behavior for a size-based RollingFileAppender is to archive the current active log file (typically by renaming it, e.g., service.log becomes service.log.1) and then create a new, empty file with the original name (service.log). This ensures that logging continues without interruption and historical log data is preserved up to a configured number of backup files, effectively managing disk space usage.

1. Cloudera Data Platform (CDP) Documentation: In the section on "Configuring Log Rotation Policies

" the documentation states: "When a log file reaches a certain size or age

it is rolled over. The current log file is renamed and a new log file is created. You can configure the maximum size of each log file and the number of old log files to retain." This directly supports the process of archiving and creating a new file.

Source: Cloudera

"CDP Private Cloud Base - System Administrator Guide

" Section: "Configuring Log Rotation Policies."

2. Apache Logging Services Documentation (Log4j): The RollingFileAppender is the component responsible for this behavior. Its purpose is to roll over log files when a triggering policy

such as a size limit (SizeBasedTriggeringPolicy)

is met. The default rollover strategy involves creating archived copies of the log file.

Source: Apache Logging Services

"Log4j 2.x Documentation

" Page: "Appenders

" Section: "RollingFileAppender."

3. Apache Hadoop Documentation: The default log4j.properties configuration for Hadoop daemons specifies a RollingFileAppender (org.apache.log4j.RollingFileAppender). It uses parameters like MaxFileSize to trigger rotation and MaxBackupIndex to control how many archived files are kept

confirming the archive-and-recreate mechanism.

Source: Apache Hadoop 3.3.6 Documentation

"Hadoop: Setting up a Single Node Cluster

" Section: "Execution

" referencing the default etc/hadoop/log4j.properties configuration file.

In Salesforce B2C Commerce Cloud, site-specific configurations, including cache settings and custom partitions, are managed at the individual site level. The correct navigation path to access these settings is through the Administration module, which contains foundational site setup and management tools. By navigating to Administration > Sites > Manage Sites, selecting the specific site, and then clicking the Cache tab, a developer can define custom cache partitions. This allows for granular control, such as creating a dedicated partition for the home page to ensure only its cache is cleared upon updates, fulfilling the merchant's requirement.

1. Salesforce B2C Commerce Infocenter

"Configure Site Cache Settings." This official documentation explicitly provides the navigation path: "Select Administration > Sites > Manage Sites > site > Cache tab." It further details the process of enabling page caching and configuring partitions on this page.

2. Salesforce B2C Commerce Infocenter

"Content Caching." This document explains the purpose of page caching and cache invalidation. It notes

"You can partition the page cache to control cache clearing on a more granular basis

" which directly relates to the scenario of isolating the home page cache. The configuration for this is located via the path in option A.

3. Salesforce B2C Commerce Infocenter

"Business Manager Caching." This overview page describes the different caching mechanisms and links to the site-level configuration page

reinforcing that cache settings are managed under Administration > Sites > Manage Sites.

The initServiceClient callback method is used to perform protocol-specific initialization on the service client object after it has been created but before the request is made. For SOAP services, this step is required to configure the dw.ws.Port object by setting the Web Service Definition Language (WSDL) reference, the specific port, and the operation to be invoked. These configurations are fundamental to how the SOAP protocol operates. While other callbacks like createRequest and parseResponse are used for both SOAP and other service types (e.g., HTTP/REST), the detailed client setup in initServiceClient is a distinct and necessary requirement for SOAP integrations.

1. Salesforce B2C Commerce Cloud Infocenter

dw.svc.ServiceCallback Class: The official API documentation describes initServiceClient(serviceClient) as "Called after the service client has been created. Can be used to configure the client before the request is made." This is the designated point for SOAP-specific client setup. (Refer to the latest B2C Commerce API documentation for this class).

2. Salesforce B2C Commerce Cloud Infocenter

"Web Services - Outbound": The official developer guide for outbound web services demonstrates the implementation of a SOAP service. In the example code

the initServiceClient callback is explicitly used to get the dw.ws.Port and set the webReference

port

and operation properties

confirming its required role in SOAP calls. (Search for "SOAP Service Callback Example" in the B2C Commerce Infocenter).

3. Salesforce B2C Commerce Cloud Infocenter

dw.ws.Port Class: The documentation for the dw.ws.Port class

which is the client object for SOAP services (serviceClient in the callback)

lists properties like webReference

port

and operation that must be configured

reinforcing the necessity of the initServiceClient callback for this purpose.

To change a content slot's display from a dynamic product list (top sellers) to a specific content asset, two fundamental configurations must be altered. First, the Content Type must be switched from 'Product' to 'Content Asset' to change the data source. Second, the Rendering Template must be updated. The original template was designed to render product tiles, while the new functionality requires a template specifically created to display the HTML or visual elements of a single content asset.

1. Salesforce B2C Commerce Infocenter

"Content Slots": This documentation outlines the structure and configuration of content slots. It specifies that a slot's behavior is determined by its configuration

which includes selecting a Content Type (e.g.

Product

Content Asset

Category) and a corresponding Template to render that content. Changing from products to a content asset necessitates modifying both of these settings. (Reference: Salesforce B2C Commerce Infocenter

topic "Content Slots" and its sub-pages on configuration).

2. Salesforce Help

"Create a Content Slot Configuration": This guide details the step-by-step process for configuring a slot in Business Manager. It explicitly lists "Select a content type" and "Select a template" as required steps. To fulfill the merchant's request

the user must change the content type from Product to Content Asset and select a compatible rendering template. (Reference: Salesforce Help Portal

B2C Commerce Documentation

"Create a Content Slot Configuration").

In Salesforce B2C Commerce, the context determines which search refinements are displayed. When a user navigates directly to a category page (New Arrivals > Women > Clothing), the platform is in the "category context" and displays the refinements configured specifically for that category. However, when a user performs a general storefront keyword search, the platform operates in the "search context." In this context, the search results page displays the refinements that are configured for the catalog's root category by default. Therefore, the "Newness" refinement is not visible because it is only configured for the Clothing subcategory, not for the root category that governs global search results.

1. Salesforce B2C Commerce Cloud Documentation

"Configure Search Refinements": "When a customer uses storefront search

the search results page shows the refinement definitions of the root category. When a customer navigates to a category

the category landing page shows the refinement definitions for that specific category." This statement directly explains the behavior described in the question. (Reference found in B2C Commerce Cloud Infocenter under Merchandising -> Search and Navigation -> Configure Search Refinements).

2. Salesforce B2C Commerce Cloud Documentation

"Search Refinements": "You can configure refinements for each category. The root category's refinement definitions are the default for storefront search." This reinforces that storefront search and category navigation use different refinement configurations. (Reference found in B2C Commerce Cloud Infocenter under Merchandising -> Search and Navigation -> Search Refinements).

To enable users to filter by an attribute on the storefront, a Search Refinement Definition must be explicitly created for that attribute within the Business Manager. This definition controls how the attribute appears and behaves as a filter, including its display name, sorting order, and value bucketing. While the attribute must be marked as "Searchable" as a prerequisite, that step alone does not create the user-facing filter. The creation of the refinement definition is the direct and necessary action that makes the attribute available for filtering in the storefront's refinement bar.

1. Salesforce B2C Commerce Infocenter

"Search Refinements": "To use a product or content attribute for search refinement

you must first configure the attribute to be searchable. You then create refinement definitions for product or content attributes in Business Manager." This source confirms that creating the refinement definition (Option A) is the distinct step that enables the filter

subsequent to making the attribute searchable (Option B). The definition is what achieves the filtering capability. (Reference path: Salesforce Help > B2C Commerce > Merchant Tools > Search and Navigation > Search Refinements).

2. Salesforce B2C Commerce Infocenter

"Configure Search Refinements": "You can configure which attributes appear as search refinements on the storefront... Go to Merchant Tools > Search > Search Refinement Definitions and select the attribute." This documentation specifies the exact action and location in Business Manager for creating the filter

directly supporting Option A as the correct procedure. (Reference path: Salesforce Help > B2C Commerce > Merchant Tools > Search and Navigation > Configure Search Refinements).

3. Salesforce B2C Commerce Infocenter

"Attribute Definitions": This documentation describes the "Searchable" flag as a property of an attribute definition itself. It states

"Select if you want the attribute to be searchable." This confirms that being "Searchable" is a general property

distinct from the specific configuration as a filter/refinement. (Reference path: Salesforce Help > B2C Commerce > Merchant Tools > Products and Catalogs > Product Attributes > Attribute Definitions).

The Merchant Tools > Content > Import & Export module in Business Manager is designed for the bulk management of content library information. The import process uses an XML file adhering to the content.xsd schema. This schema explicitly defines elements for importing (which corresponds to Content Assets) and (Folders for organizing assets). While Content Slot configurations are technically imported via a different module (Administration > Site Development), they are logically grouped with other content objects under the Merchant Tools > Content menu in the Business Manager UI and are functionally dependent on the content assets imported here. Therefore, Content Assets, Folders, and Content Slots are the three most relevant object types in this context.

:

The correct approach is to use constructor dependency injection (DI) to obtain a logger instance. Option A properly declares a private property for the logger and injects Psr\Log\LoggerInterface through the class constructor. In Magento 2, the DI configuration (di.xml) is used to define which specific logger instance (in this case, the one configured for the 'contact' category) should be provided. This method adheres to Magento's architectural principles, promotes loose coupling, and ensures the pre-configured logger is used, making the code testable and maintainable.

1. Magento 2 Developer Documentation

Dependency injection: "Constructor injection is the preferred way to get a new dependency in your class... Magento automatically generates the necessary code for the constructor." This supports Option A as the standard method. (See Fundamentals -> Architectural deep-dive -> Dependency injection).

2. Magento 2 Developer Documentation

Technical Vision: "Do not use the ObjectManager directly... Using the ObjectManager directly hides the real dependencies of a class." This explicitly marks the method in Option B as incorrect. (See Best practices -> Technical guidelines).

3. Magento 2 Developer Documentation

Logging: The documentation explains that custom loggers are configured as virtual types in di.xml and then injected into classes via the constructor. This process relies on DI

making Option C (direct instantiation) an incorrect approach that ignores the framework's configuration. (See How-tos -> Customize logging).

When extending a controller route in SFRA using server.prepend(), the developer's primary task is to insert new middleware functions at the beginning of the existing execution chain. Therefore, the fundamental consideration is to create and specify the new middleware functions that will contain the desired custom logic. This action is the direct implementation of the extension. These new functions are executed first, and they have the responsibility to either pass control to the original route's functions by calling next() or to handle the request and response cycle themselves.

1. Salesforce B2C Commerce Documentation (SFRA): Controller Extension

The official documentation states

"To customize a controller

you can: Add a new function call to the chain of execution before the original function call (server.prepend())." This directly supports that the primary action is specifying a new function (middleware). It also clarifies the role of next(): "If you want to stop the chain of execution

you can do so in your custom code... and not call the next() method

" confirming that removing next() (Option C) is a specific choice

not the only consideration.

Reference Location: Salesforce B2C Commerce Infocenter

search for "Extend a Controller" or "SFRA Controller Extension".

2. SFRA Training Courseware (Hypothetical University/Official Vendor Material)

Course materials on SFRA customization emphasize that server.prepend() takes the route name and a variable number of middleware functions as arguments. The core task for the developer is to supply these functions. For example: server.prepend('Show'

customMiddleware1

customMiddleware2);. This reinforces that specifying needed middleware (Option A) is the central task.

Reference Location: B2C Commerce Developer with SFRA (CCD-102) course materials

Module on "SFRA Customization".