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NEW QUESTION 33
A company is building a new web platform where user requests trigger an AWS Lambda function that performs an insert into an Amazon Aurora MySQL DB cluster. Initial tests with less than 10 users on the new platform yielded successful execution and fast response times. However, upon more extensive tests with the actual target of 3,000 concurrent users, Lambda functions are unable to connect to the DB cluster and receive too many connections errors.
Which of the following will resolve this issue?
- A. Increase the number of Aurora Replicas
- B. Increase the instance size of the DB cluster
- C. Edit the my.cnf file for the DB cluster to increase max_connections
- D. Change the DB cluster to Multi-AZ
Answer: B
Explanation:
Max_connection is a formula in RDS parameter group: GREATEST({log(DBInstanceClassMemory/805306368)*45},{log(DBInstanceClassMemory/8187281408)*1000})
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Managing.Performance.html You can increase the maximum number of connections to your Aurora MySQL DB instance by scaling the instance up to a DB instance class with more memory, or by setting a larger value for the max_connections parameter in the DB parameter group for your instance, up to 16,000. You must change a larger value for the max_connections parameter in the DB parameter group, not edit my.cnf, it is not physical server hosting MySQL.
NEW QUESTION 34
A company runs online transaction processing (OLTP) workloads on an Amazon RDS for PostgreSQL Multi-AZ DB instance. Tests were run on the database after work hours, which generated additional database logs. The free storage of the RDS DB instance is low due to these additional logs.
What should the company do to address this space constraint issue?
- A. Run the SELECT rds_rotate_error_log() stored procedure to rotate the logs
- B. Log in to the host and run the rm $PGDATA/pg_logs/* command
- C. Modify the rds.log_retention_period parameter to 1440 and wait up to 24 hours for database logs to bedeleted
- D. Create a ticket with AWS Support to have the logs deleted
Answer: C
NEW QUESTION 35
A company has an Amazon RDS Multi-AZ DB instances that is 200 GB in size with an RPO of 6 hours. To meet the company's disaster recovery policies, the database backup needs to be copied into another Region. The company requires the solution to be cost-effective and operationally efficient.
What should a Database Specialist do to copy the database backup into a different Region?
- A. Create an AWS Lambda function to take an Amazon RDS snapshot every 6 hours and use a second Lambda function to copy the snapshot into another Region
- B. Use Amazon RDS automated snapshots every 6 hours and use Amazon S3 cross-Region replication to copy the snapshot into another Region
- C. Use Amazon RDS automated snapshots and use AWS Lambda to copy the snapshot into another Region
- D. Create a cross-Region read replica for Amazon RDS in another Region and take an automated snapshot of the read replica
Answer: D
NEW QUESTION 36
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