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A company is modernizing its legal systems lo accelerate access lo applications and data while supporting the adoption of new technologies. The key to achieving this business goal is unlocking the companies' key systems and dala including microservices miming under Docker and kubernetes containers using apis. Considering the current aggressive backlog and project delivery requirements the company wants to take a strategic approach in the first phase of its transformation projects by quickly deploying API's in mule runtime that are able lo scale, connect to on premises systems and migrate as needed. Which runtime deployment option supports company's goals?
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Question 5 - MCIA Level 1 Maintenance discussion

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A Mule application is being designed To receive nightly a CSV file containing millions of records from an external vendor over SFTP, The records from the file need to be validated, transformed. And then written to a database. Records can be inserted into the database in any order.

In this use case, what combination of Mule components provides the most effective and performant way to write these records to the database?

A.
Use a Parallel for Each scope to Insert records one by one into the database
Answers
A.
Use a Parallel for Each scope to Insert records one by one into the database
B.
Use a Scatter-Gather to bulk insert records into the database
Answers
B.
Use a Scatter-Gather to bulk insert records into the database
C.
Use a Batch job scope to bulk insert records into the database.
Answers
C.
Use a Batch job scope to bulk insert records into the database.
D.
Use a DataWeave map operation and an Async scope to insert records one by one into the database.
Answers
D.
Use a DataWeave map operation and an Async scope to insert records one by one into the database.
Suggested answer: C

Explanation:

Correct answer is Use a Batch job scope to bulk insert records into the database * Batch Job is most efficient way to manage millions of records.

A few points to note here are as follows :

Reliability: If you want reliabilty while processing the records, i.e should the processing survive a runtime crash or other unhappy scenarios, and when restarted process all the remaining records, if yes then go for batch as it uses persistent queues.

Error Handling: In Parallel for each an error in a particular route will stop processing the remaining records in that route and in such case you'd need to handle it using on error continue, batch process does not stop during such error instead you can have a step for failures and have a dedicated handling in it.

Memory footprint: Since question said that there are millions of records to process, parallel for each will aggregate all the processed records at the end and can possibly cause Out Of Memory.

Batch job instead provides a BatchResult in the on complete phase where you can get the count of failures and success. For huge file processing if order is not a concern definitely go ahead with Batch Job

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asked 18/09/2024
Alajauan Adams
35 questions
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