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Lessons (15)

• DynamoDB Modeling, RDS Scaling and Data Resilience

  … Check [RDS Proxy endpoints](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/rds-proxy-endpoints.html). Deliverable: document …

• AWS Databases: Choose the Right One

  … Start from the queries and guarantees your app needs. RDS: managed SQL database RDS runs engines such as …

• Practical Project: Deploy a Real CRM App on EKS

  … ECR images, an EKS cluster, Pod Identity for Secrets Manager, private RDS, ingress, CI/CD, troubleshooting and a …

• AWS Interview Questions: Clear Answers

  … The app saves the order in RDS, then a reliable messaging path triggers confirmation work.” For each component …

• AWS: Start Here

  … ECS, EC2, or Lambda] A -- D[RDS or DynamoDB] A -- S[S3 files] Need AWS service to learn …

• Resilience, Disaster Recovery and Multi-Region Design

  … typical lag under a second; promote the secondary) RDS Cross-region read replica or automated backup replication EBS …

• StatefulSets, DaemonSets, Jobs and CronJobs

  … For real databases, prefer an operator (see the extending lesson) or a managed service such as RDS. DaemonSet …

• Multi-Account Strategy, Governance and Security Operations

  … Enforce encryption (EBS default encryption, S3 default encryption, RDS encrypted). - Require IMDSv2 on EC2. - Disable root access keys …

• What Is Software Architecture?

  … 50k orders/day. Decision Use PostgreSQL 17 (managed, Amazon RDS). Consequences + ACID transactions, mature tooling, team familiarity + JSONB …

• Serverless Architecture

  … 1 DB connection each can overwhelm Postgres; use RDS Proxy, Data API, or serverless-friendly DBs Least-privilege …

• Frontend Performance & Core Web Vitals

  … responds"] -- R["Resource load<br/ hero image / font"] -- Rd["Render<br/ CSS/JS unblocked"] -- LCP(("✅ LCP")) 1. Optimise …

• Cost Optimization and the Well-Architected Framework

  … Similar to Savings Plans 1 or 3 years RDS, ElastiCache, OpenSearch (where Savings Plans do not apply) Spot …

• AWS Security Building Blocks

  … Usually you ask a service such as S3, RDS, or Secrets Manager to encrypt with a KMS key …

• EC2, Storage and Auto Scaling

  … through object APIs, not a normal block disk RDS Relational application records Separate managed database lifecycle Many EC2 …

• Caching & Redis

  … count 100) throw new TooManyRequestsError(); Persistence and availability - RDB snapshots: save the whole dataset every N minutes (fast …