Introduction
This serves as my notes to my journey for the AWS SAA-C03 certification.
Table of Contents
Subposts
- EC2 Instance Storage & EFS
- EBS (Elastic Block Store) Overview
- EBS Volume Types
- Solid State Drives (SSD)
- Hard Disk Drives (HDD)
- EBS Snapshots
- AMI (Amazon Machine Image)
- EC2 Instance Store (“Ephemeral Storage”)
- EBS Multi-Attach
- EBS Encryption
- Amazon EFS (Elastic File System)
- Comparison: EBS vs EFS vs Instance Store
- Scalability & Elastic Load Balancers
- Availability & Scalability
- Vertical vs Horizontal Scaling
- Elastic Load Balancers (ELB) Overview
- Application Load Balancer (ALB) — Layer 7
- Listeners & Rules
- Network Load Balancer (NLB) — Layer 4
- Key Features
- NLB in Front of an ALB
- Gateway Load Balancer (GLB) — Layer 3
- Key ELB Features & Mechanics
- Sticky Sessions (Session Affinity)
- Cross-Zone Load Balancing
- SSL/TLS Certificates & SNI
- Connection Draining (Deregistration Delay)
- Advanced Exam Scenarios
- Client IP Preservation (X-Forwarded-For)
- Security Group Chaining
- Weighted Target Groups (Blue/Green)
- WAF Integration
- Access Logs
- Slow Start Mode
- Auto Scaling Groups (ASG)
- ASG Basics
- Launch Template vs Launch Configuration
- Scaling Policies
- Dynamic Scaling
- Target Tracking
- Step Scaling
- Simple Scaling (legacy)
- Predictive Scaling
- Scheduled Scaling
- Important ASG Mechanics
- Scaling Cooldowns
- Health Checks: EC2 vs ELB
- Termination Policy
- Advanced Features
- Lifecycle Hooks
- Instance Refresh
- Warm Pools
- Scenario Cheat Sheet
- RDS, Aurora & ElastiCache
- Amazon RDS Overview
- Read Replicas vs Multi-AZ
- RDS Custom (Oracle & SQL Server)
- Amazon Aurora
- Storage — the interesting part
- Availability & Replicas
- Endpoints
- Aurora — Advanced Concepts
- Aurora Serverless
- Aurora Global Database
- Other Aurora Features
- Backups, Monitoring & Maintenance
- Backup Architecture
- Database Cloning (Aurora only)
- Monitoring Tools
- Maintenance Windows
- RDS Security
- RDS Proxy
- ElastiCache
- Redis vs Memcached
- Caching Strategies
- Use Case: Session Store
- Crucial Exam Extras
- AWS Secrets Manager
- Automated Backups vs Manual Snapshots
- Parameter Groups: Static vs Dynamic
- Database Migration Service (DMS)