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問題 #59
An integration architect has built a Salesforce application that integrates multiple systems and keeps them synchronized via Platform Events. What is taking place if events are only being published?
答案：C
解題說明：
The timing of Platform Event publishing is a critical detail for an Integration Architect, as it affects data consistency and transaction integrity. In Salesforce, the default and most common behavior for publishing Platform Events from Apex is "Publish After Commit." When an architect chooses the "Publish After Commit" setting (defined at the event level), the events are held in a buffer and are only released to the event bus after the Apex transaction completes successfully. This ensures that if the database transaction fails and rolls back, the event-which might trigger external actions-is never sent. This prevents "ghost" events where an external system is told to process data that was never actually saved to the Salesforce database.
The question implies a standard scenario where events are being "published" into the bus. In this state, the events have passed the transaction boundary. If the events were only "being published from Apex" (Option C), it doesn't describe the state of the delivery or the transaction. Option B is technically incorrect for standard event publishing logic, as Salesforce explicitly separates the event bus from the database commit to maintain atomicity.
Understanding this "After Commit" behavior is vital when designing synchronization patterns. If the architect requires the event to be sent regardless of whether the transaction succeeds (e.g., for logging a failure), they would need to configure the event as "Publish Immediately." However, in a standard synchronization use case where events are "only being published," it signifies that the source transaction has finalized, and the messages are now available for subscribers (like middleware or other Salesforce orgs) to consume.
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問題 #60
A company uses Customer Community for course registration. The payment gateway takes more than 30 seconds to process transactions. Students want results in real time to retry if errors occur. What is the recommended integration approach?
答案：A
解題說明：
Standard synchronous Apex callouts have a timeout limit, and more importantly, Salesforce limits the number of long-running requests (those lasting longer than 5 seconds) that can execute concurrently. If a payment gateway consistently takes 30 seconds, a few simultaneous users could easily exhaust the org's concurrent request limit, causing the entire system to stop responding.
The Continuation pattern (Option C) is designed specifically for this "long-wait" scenario. It allows the Apex request to be suspended while waiting for the external service to respond, freeing up the Salesforce worker thread to handle other users. Once the gateway responds, the suspended process resumes and returns the result to the student's browser. This provides the "real-time" experience required for the student to retry immediately without the risk of bringing down the entire community due to thread exhaustion.
問題 #61
Universal Containers (UC) is a leading provider of management training globally. UC embarked on a Salesforce transformation journey to allow students to register for courses in the Salesforce Community. UC has a learning system that masters all courses and student registration. UC requested a near real-time feed of student registration from Salesforce to the learning system. The integration architect recommends using Salesforce Platform Events. Which API should be used for the Salesforce pl1atform event solution?
答案：C
解題說明：
Salesforc30e Platform Events are built on top of a highly scalable, event-driven messaging architecture designed to enable real-time communication between apps. To consume these events from outside Salesforce-such as from a legacy learning system-clients must use the Streaming API.
The Streaming API is the technical foundation for receiving event notifications in a Publish/Subscribe model. It utilizes the CometD protocol or the newer gRPC-based Pub/Sub API to maintain a persistent connection between the external client and Salesforce. When a student registers for a course in the Salesforce Community, a Platform Event is "published" to the event bus. The learning system, acting as a "subscriber," remains connected via the Streaming API and receives the event message instantly without needing to poll Salesforce for updates.
This architecture is ideal for "near real-time" requirements because it eliminates the overhead of traditional point-to-point integrations. While the REST and SOAP APIs (Options A and B) can be used to publish events into Salesforce, they are not designed to receive unsolicited notifications from the platform. By using the Streaming API, the integration architect ensures the solution is both responsive and efficient, as Salesforce only pushes data when a relevant event occurs. Furthermore, because Platform Events provide a retention window, the Streaming API allows the learning system to use a Replay ID to catch up on any registration events missed during a brief network outage.
問題 #62
Northern Trail Outfitters is in the final stages of merging two Salesforce orgs, but needs to keep the retiring org available for a short period of time for lead management as it is connected to multiple public website forms. The sales department has requested that new leads are available in the new Salesforce instance within 30 minutes. Which approach requires the least amount of development effort?
答案：B
解題說明：
In an org merger scenario, a Salesforce Platform Integration Architect must often design interim solutions that balance speed of delivery with minimal development overhead. The requirement here is for leads to be synced within a 30-minute window. This is a relatively low-latency requirement that does not strictly necessitate a real-time, event-driven architecture, which typically requires more complex infrastructure like Platform Events or middleware.
Option A, calling the Salesforce REST API to insert leads into the target system, represents the standard, most straightforward approach. Since both systems are Salesforce orgs, the retiring org can be configured to make an outbound REST call to the new org's standard Lead endpoint. This can be achieved with a small amount of Apex code (such as a trigger or an invocable method called by a Flow). This approach is considered the "least development effort" because it leverages the standard REST API, which is already enabled and authenticated via a Connected App in the target org. It requires no custom API development in the target system and uses standard JSON payloads.
Option B is incorrect because the Tooling API is intended for managing metadata, system settings, and developer tools, not for standard transactional data movement like Lead insertion. Option C, using the Composite REST API, is an optimization technique designed to group multiple requests into a single call to save on API limits. While efficient for high-volume scenarios, it introduces additional development complexity regarding payload construction and bulk error handling that exceeds the "least effort" requirement for a simple Lead sync. Therefore, a standard REST call is the most direct path to meeting the 30-minute SLA with minimal coding.
問題 #63
Universal Containers (UC) works with third-party agents on banner initial design concepts. The design files (2.5 GB) are stored in an on-premise file store. UC wants to allow agencies to view these files in the community. Which solution should an integration architect recommend?
答案：C
解題說明：
When dealing with extremely large files, such as the 2.5 GB design files mentioned, an architect must consider the platform's file size limits and storage costs. Salesforce Files have a maximum upload size of 2 GB through most interfaces, making Option B technically unfeasible for a 2.5 GB file. Furthermore, storing numerous large files natively in Salesforce would lead to excessive storage consumption and costs.
The most efficient and cost-effective approach is Data Virtualization or Redirection. By creating a custom object to store the file location URL (Option C), the actual file remains in the performant on-premise file store. When the community user needs to access the design, they are redirected to the source system, which handles the massive data transfer. This fulfills the requirement to "view" the files without the overhead of moving gigabytes of data through the Salesforce infrastructure. Option A is less ideal because a 2.5 GB download over a standard Request-Reply pattern would likely lead to timeouts and a poor user experience.
問題 #64
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