API Gateway is a fully managed API endpoint service that creates, manages, publishes, monitors, secures, and scales APIs. API Gateway can use other AWS services (Lambda, DynamoDB) for compute and store.Continue reading “[AWS] API Gateway”
Lambda@Edge is a feature of Amazon CloudFront that lets you run code closer to users of your application, which improves performance and reduces latency.Continue reading “[AWS] Lambda@Edge”
Lambda is a FaaS (Function as a service) product where you can upload your code and create functions. Functions are invoked by events and can be executed for up to 15 minutes.Continue reading “[AWS] Lambda”
You can use placement groups to influence how EC2 instances are placed.Continue reading “[AWS] EC2 – Placement Groups”
AMIs (Amazon Machine Images) are containers that are used to build instances (OS + SW packages + settings).Continue reading “[AWS] EC2 – AMIs”
EBS volume encryption uses EC2 host hardware to encrypt data at rest and in-transit between EBS and EC2 instances.Continue reading “[AWS Architect] (41) EBS Encryption”
Security Token Service (STS) creates temporary security credentials – short time use (A few minutes to several hours).Continue reading “[AWS] Security Token Service (STS)”
A snapshot is a point-in-time backup of an ESB Volume stored in S3.
- To protect against AZ failure, EBS snapshots (to S3) can be used.
- Snapshots are incremental. The initial snapshot is a full copy, and future ones only store the data changed since the last snapshot, which can reduce the storage cost.
- You can take a snapshot while the instance is running. When you back up a root volume, you need to stop the instance for data integrity.
- You can create an AMI from a snapshot.
- EBS volumes are in the same AZ of the EC2 instance.