Java AWS Developer Interview Questions and Answers

To optimize RDS cost when data is not frequently inserted, consider using reserved instances, right-sizing the instance, enabling auto-scaling, and using spot instances.

• Consider using reserved instances to save costs on long-term usage

• Right-size the RDS instance based on actual usage to avoid overpaying for unused resources

• Enable auto-scaling to automatically adjust resources based on demand

• Utilize spot instances for non-critical workloads to take advantage of lower costs

To create a cloudwatch alarm based on log level, you can use CloudWatch Logs Insights to query logs and set up alarms based on the results.

• Use CloudWatch Logs Insights to query logs for specific log levels

• Create a metric filter in CloudWatch Logs to extract log level information

• Set up a CloudWatch alarm based on the metric filter to trigger when log level reaches a certain threshold

Deploying a Spring Boot application on AWS involves creating a deployment package and using AWS services like Elastic Beanstalk or EC2.

• Create a deployment package of the Spring Boot application (e.g. JAR file)

• Choose an AWS service like Elastic Beanstalk or EC2 for deployment

• Configure the AWS service with necessary settings like environment variables, instance type, etc.

• Upload the deployment package to AWS and start the application

ECS is a container management service that requires you to manage the underlying infrastructure, while Fargate is a serverless compute engine for containers.

• ECS requires you to provision and manage the infrastructure for your containers, while Fargate abstracts this away and allows you to focus on your application.

• With ECS, you have more control over the underlying infrastructure, such as instance types and networking configurations, while Fargate handles these details for yo...read more