Practice for AWS DevOps Professional Exam
Thoroughly Understand Blue/Green vs A/B Testing Lifecycle hooks (AutoScaling), Lifecycle Events (OpsWorks), and Lifecycle Policies (S3)! DynamoDB partitions and performance BeanStalk and OpsWorks
Play with SQS and SNS Read about EBS Snapshots
DataPipeline and Cognito
Make a Lambda function that is a Custom Resource in a CloudFormation template Deploy an application using Elastic Beanstalk Setup CloudWatch logs agent on a few EC2 instances
- beanstalk .ebextensions are applied in alphabetical order
- manual modifications will not be overridden by config files or saved configurations
- opsworks
- Stacks > Layers > Instances
- dynamo
- local secondary indexes use same partition key but give you another sort key
- LSI consumes the same r/w throughput from original table
- LSI is max 5 per table and has to be specified at creation
- LSI sort key has to be scalar so no json blobs, etc
- global secondary indexes give diff partition key and diff sort key
- GSI has its own r/w throughput specified at creation time
- throughput
- 1 RCU is 1 read per second up to 4kb, 1 WCU is 1 write per second up to 1kb
- e.g., want to read 80 3kb things per seconds so need 80 RCU for strong consistent reads or 40 RCU for eventual consistent read
- s3
- standard storage 4 9's avail
- Infrequent access 3 9's avail
- RRS - less durability