Developer Associate (Page 64)

A developer is creating a new application for a pet store.The application will manage customer rewards points.The developer will use Amazon DynamoDB to store the data for the application.The developer needs to optimize query performance and limit partition overload before actual performance analysis.Which option should the developer use for a partition key to meet these requirements?Read More →

A company hosts its application on AWS.The application runs on an Amazon Elastic Container Service (Amazon ECS) cluster that uses AWS Fargate.The cluster runs behind an Application Load Balancer.The application stores data in an Amazon Aurora database.A developer encrypts and manages database credentials inside the application.The company wants to use a more secure credential storage method and implement periodic credential rotation.Which solution will meet these requirements with the LEAST operational overhead?Read More →

A developer is creating an AWS Lambda function that consumes messages from an Amazon Simple Queue Service (Amazon SQS) standard queue.The developer notices that the Lambda function processes some messages multiple times.How should developer resolve this issue MOST cost-effectively?Read More →

A developer has a continuous integration and continuous delivery (CI/CD) pipeline that uses AWS CodeArtifact and AWS CodeBuild.The build artifacts are between 0.5 GB and 1.5 GB in size.The builds happen frequently and retrieve many dependencies from CodeArtifact each time.The builds have been slow because of the time it takes to transfer dependencies.The developer needs to improve build performance by reducing the number of dependencies that are retrieved for each build.Which solution will meet this requirement?Read More →

A developer is creating an AWS Lambda function that searches for items from an Amazon DynamoDB table that contains customer contact information.The DynamoDB table items have the customer’s email_address as the partition key and additional properties such as customer_type, name and job_title.The Lambda function runs whenever a user types a new character into the customer_type text input.The developer wants the search to return partial matches of all the email_address property of a particular customer_type.The developer does not want to recreate the DynamoDB table.What should the developer do to meet these requirements?Read More →

A developer is writing an application for a company.The application will be deployed on Amazon EC2 and will use an Amazon RDS for Microsoft SQL Server database.The company’s security team requires that database credentials are rotated at least weekly.How should the developer configure the database credentials for this application?Read More →

A company developed an API application on AWS by using Amazon CloudFront, Amazon API Gateway, and AWS Lambda.The API has a minimum of four requests every second.A developer notices that many API users run the same query by using the POST method.The developer wants to cache the POST request to optimize the API resources.Which solution will meet these requirements?Read More →

A developer needs to freeze changes to an AWS CodeCommit repository before a production release.The developer will work on new features while a quality assurance (QA) team tests the release.The QA testing and all bug fixes must take place in isolation from the main branch.After the release, the developer must integrate all bug fixes into the main branch.Which solution will meet these requirements?Read More →

A developer needs to store files in an Amazon S3 bucket for a company’s application.Each S3 object can have multiple versions.The objects must be permanently removed 1 year after object creation.The developer creates an S3 bucket that has versioning enabled.What should the developer do next to meet the data retention requirements?Read More →

A developer wants to store information about movies.Each movie has a title, release year, and genre.The movie information also can include additional properties about the cast and production crew.This additional information is inconsistent across movies.For example, one movie might have an assistant director, and another movie might have an animal trainer.The developer needs to implement a solution to support the following use cases:For a given title and release year, get all details about the movie that has that title and release year.For a given title, get all details about all movies that have that title.For a given genre, get all details about all movies in that genre.Which data store configuration will meet these requirements?Read More →