Search

Lessons (40)

• Resilience, Disaster Recovery and Multi-Region Design

  Define RTO and RPO, choose a DR strategy, and design for failure across AZs and regions. Start with …

• Multi-Region and Disaster Recovery

  Decide what must survive a regional failure, how much data can be lost, and how recovery is actually …

• Practical Project: Deploy a Real CRM App on EKS

  … aws eks associate-access-policy \ --cluster-name "$CLUSTER" --region "$REGION" \ --principal-arn ROLE ARN \ --policy-arn arn:aws …

• Networking, DNS and Traffic Routing

  … One region fails, but some browsers continue using cached DNS answers. What must be true Route users to …

• Premiere-Night Video Streaming

  … Serve video through CDN edges and regional shields. At a 99% byte hit ratio the origin still needs …

• AWS: Start Here

  … Choose a Region near your users and one that supports the services you need. A beginner service map …

• Environments, Workspaces, and Multiple Accounts

  … second region using an alias: hcl provider "aws" { region = "us-east-1" } provider "aws" { alias = "secondary" region = "us …

• Practical Lab: S3 File Upload and CloudFront Delivery with NestJS

  … aws s3api create-bucket --bucket $BUCKET --region $REGION For any other region, use: aws s3api create-bucket --bucket …

• Cost Optimization and the Well-Architected Framework

  … cross-AZ, cross-region and internet egress. Use CloudFront in front of origins, keep chatty services in the …

• Domains, Load Balancers and HTTPS

  … For a regional ALB, request it in the ALB’s Region. Route 53 record Use an alias record …

• DynamoDB Modeling, RDS Scaling and Data Resilience

  … be copied across regions and accounts AWS Backup Central policies, cross-account and cross-region copies, vault lock …

• Collaborative Document Editing & Real-Time Sync

  … 2. How do you go multi-region? Home each document in one region near most of its editors …

• Backend Design Scenarios

  … How do you scale without overprovisioning the rest of the year?]( 6-traffic-spikes-10x-in-one-region …

• AWS Interview Questions: Clear Answers

  … Do not throw every AWS service into one answer. Common questions What is the difference between a Region …

• Debug Latency Like an Investigator

  … Record window, route/tenant/region, percentiles, error rate. 2. Compare healthy and slow traces; locate the span that …

• Observability and Incident Response

  … Start with endpoint success rate and latency split by release, region and dependency. Identify the incident’s scope …

• Brokers, Replication & Durability

  … Kafka 4.0 removed ZooKeeper entirely. Racks and regions - Rack awareness ( broker.rack ): Kafka places replicas in different …

• VPC Endpoints, Transit Gateway and Hybrid Networking

  … a task reads a secret A private app calls the Secrets Manager regional hostname over HTTPS. With an …

• Scaling, Load Balancing & Rate Limiting

  … Use health checks, multiple balancer nodes or a managed service, and a DNS/global traffic layer for regional …

• IAM Deep Dive: Policy Evaluation, STS and Cross-Account Access

  … session name = academy-audit region = ap-southeast-1 Replace account IDs, role, and Region with your lab values …

• HCL, Resource Addresses, and Project Layout

  … versions.tf CLI and provider constraints providers.tf region and provider settings main.tf resources variables.tf input …

• Run Containers on AWS with ECR and ECS

  … The commands below assume AWS CLI v2, Docker, an authorized academy profile, Region ap-southeast-1 , and that …

• S3: Store Files Safely

  … a private general-purpose bucket in a chosen Region through the S3 console. Choose a unique name, keep …

• Testing, Preconditions, and Policy Checks

  … An organization might reject public S3 buckets, unapproved regions, missing owner tags, or production database destruction. Implement policies …

• Providers and Your First AWS Resources

  … source = "hashicorp/aws" version = "~ 6.0" } } } provider "aws" { region = "us-east-1" } resource "aws s3 bucket" "assets" { bucket …

• Time, Consistency and Distributed Transactions

  … impossible global certainty. The problem in context Two regions edit an account and process an order. Their wall …

• State, Remote Backends, and Locking

  … existing-state-bucket" key = "academy/dev/storage.tfstate" region = "us-east-1" encrypt = true use lockfile = true } } Native …

• Design a Ride-Sharing Service

  … Watch stale-location age, match latency, conflicts and regional imbalance. Two data paths with different truth Driver location …

• AI Specialties and Real-World Examples

  … locations and categories, such as boxes around damaged regions. Segmentation assigns a category to individual pixels. Choose the …

• Capacity Planning, SLOs and Error Budgets

  … caching, replication and multi-region copies are not free. From SLO to an operating decision Suppose checkout has …

• Production Capstone and Interview Practice

  … Keep the module's provider requirement; configure region and credentials in each root. Replace bucket prefix with var …

• Microkernel (Plugin) Architecture

  … can be hard to debug Customisation per customer/region without forks Performance overhead of indirection and isolation When …

• Internals, Upgrades, Resilience and Interview Questions

  … pressure. - Multi-cluster for blast-radius isolation or regions: Argo CD ApplicationSets, a service mesh or Cilium Cluster …

• Multi-Account Strategy, Governance and Security Operations

  … owner, environment, organizational unit, access groups, billing tags, Region policy, logging, and recovery contact. Apply a baseline through …

• Atomic Design & Component Libraries

  … a domain component Template Page structure and layout regions AccountSettingsLayout No real data; it defines slots Page Route …

• Containers at Scale: ECS Deep Dive and EKS

  … policies to expire old images. - Replicate to other regions for DR, and use pull-through cache for public …

• Safe AWS Deployments with IaC and CI/CD

  … Only execute it after verifying the target account, Region, and changes: bash aws cloudformation execute-change-set \ --stack …

• CloudWatch: Know What Your App Is Doing

  … Confirm account, Region, service, and time window. 2. Compare traffic, deployments, and database health. 3. Search affected request …

• AWS Messaging: Queues, Topics and Events

  … standard queue named academy-receipts in your learning Region. Use AWS CLI v2 and an authorized profile. Retrieve …

• AWS Security Building Blocks

  … import json import boto3 client = boto3.client("secretsmanager", region name="ap-southeast-1") response = client.get secret value …