Exam MCIA-Level-1 Topic 13 Question 270 Discussion

Actual exam question for MuleSoft's MCIA-Level-1 exam
Question #: 270
Topic #: 13

An external API frequently invokes an Employees System API to fetch employee data from a MySQL database. The architect must design a caching strategy to query the database only when there Is an update to the Employees table or else return a cached response in order to minimize the number of redundant transactions being handled by the database.

A. Use an On Table Row operation configured with the Employees table, call invalidate cache, and hardcode the new Employees data to cache. Use an object-store-caching-strategy and set the expiration interval to 1 hour. B. Use an On Table Row operation configured with the Employees table and cail invalidate cache. Use an object-store-caching-strategy and the default expiration interval. C. Use a Scheduler with a fixed frequency set to every hour to trigger an invalidate cache flow. Use an object-store-caching-strategy and the default expiration interval. D. Use a Scheduler with a fixed frequency set to every hour, triggering an invalidate cache flow. Use an object-store-caching-strategy and set the expiration interval to 1 hour.

Suggested Answer: B Vote an answer

To design a caching strategy that queries the database only when there is an update to the Employees table, follow these steps:
* On Table Row Operation: Configure an On Table Row operation to monitor the Employees table for updates.
* Invalidate Cache: When the On Table Row operation detects an update, trigger the invalidate cache operation to clear the cache.
* Object Store Caching Strategy: Use an object-store-caching-strategy to store the cached responses.
* Default Expiration Interval: Use the default expiration interval for the cache, which ensures that cached data is invalidated based on the detection of changes in the Employees table rather than a fixed time interval.
This strategy ensures that the cache is only invalidated when there are actual changes in the Employees table, thereby minimizing redundant transactions and optimizing database performance.
References
* MuleSoft Documentation on Caching Strategies
* Best Practices for Database Integration with MuleSoft

by Ira at May 13, 2025, 12:12 AM

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