A Bitcoin full node contains the complete Bitcoin blockchain, that is, all blocks that have been mined since January 3, 2009, when Satoshi Nakamoto mined the first Bitcoin block (block 0 or genesis block). The complete blockchain contains all transactions that have been processed by the Bitcoin network.
Full nodes download every block and transaction and validate them against Bitcoin consensus […]
To create a CloudFormation stack containing a Lambda function, you usually need to prepare a deployment package that contains the function code and dependencies, and upload it to an S3 bucket located in the same AWS region where you want to create the stack. In the CloudFormation template, you specify the corresponding S3 bucket name and key.
For simple Lambda functions written in Python or […]
Amazon Elastic File System (EFS) is a fully-managed service that provides an NFS file system for use with other AWS services as well as on-premises resources.
Amazon EFS can scale on demand to petabytes and can be concurrently accessible by thousands of instances. It provides strong data consistency and file locking across all instances that access a file system. For high availability and […]
When you send HTTP requests to AWS, you sign the requests so that data is protected in transit, and AWS can verify the identity of the requester. If you use the AWS Command Line Interface (CLI) or AWS SDKs, the requests are signed for you automatically.
To sign a request, you calculate a hash known as the signature. Then, you add the signature to the HTTP
Authorization header or the query […]
AWS Systems Manager Agent (SSM Agent) is lightweight Amazon software that can be installed and configured on an Amazon EC2 instance or an on-premises server/system. SSM Agent securely communicates with the Systems Manager service and gives this AWS service visibility and control of the managed servers.
Systems Manager has different capabilities that allow you, for example, to run a command on a […]