Devops

What is AWS CodeDeploy? AWS CodeDeploy is a deployment service that automates application deployments to EC2 instances, on-premises servers, Lambda functions, or ECS services. Key Concepts Application A name that uniquely identifies the application you want to deploy. Container for deployment groups and revisions. Deployment Group Set of instances or Lambda functions where new revision is deployed. Includes deployment configuration and optional load balancer. Deployment Configuration Rules controlling deployment speed and pattern (e.g., deploy to 50% of instances at a time). ...

Aurora AWS-managed relational database (MySQL/PostgreSQL compatible) with cloud-native architecture. Storage and compute are separated. Aurora Cluster (Single Region) One primary instance (read/write) + optional read replicas sharing the same storage. Writer Endpoint Reader Endpoint │ │ ▼ ▼ ┌──────────────┐ ┌──────────────┬──────────────┐ │ Primary │ │ Replica 1 │ Replica 2 │ │ (Writer) │ │ (Reader) │ (Reader) │ └──────┬───────┘ └──────┬───────┴──────┬───────┘ │ │ │ └─────────────┬───────────────┴──────────────┘ ▼ ┌────────────────────────────────────────┐ │ Shared Cluster Storage │ │ (6 copies across 3 AZs) │ │ Auto-grows up to 128 TB │ └────────────────────────────────────────┘ All instances share same storage (no replication lag for storage) Replicas can be promoted to primary if primary fails (~30 seconds failover) Up to 15 read replicas Single region only Aurora Storage One logical storage automatically replicated across 3 AZs (6 copies total, 2 per AZ). ...

What is AWS CodePipeline? AWS CodePipeline is a continuous integration and continuous delivery (CI/CD) service that automates the build, test, and deploy phases of your release process. Key Concepts Pipeline A workflow that describes how code changes go through release process. Consists of multiple stages executed sequentially. Stage A logical unit in pipeline (e.g., Source, Build, Test, Deploy). Each stage contains one or more actions. Action A task performed on artifacts (e.g., download from GitHub, compile code, deploy to EC2). Actions within same stage run in parallel. ...