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Lessons (40)

• Providers and Your First AWS Resources

  Configure AWS safely and provision a private, versioned S3 bucket with explicit resource settings. Before running this lab …

• Real-Time, Pub/Sub, Webhooks and CDC

  … A consumer receiving version 8 after version 9 should detect the stale version rather than overwrite newer state …

• S3: Store Files Safely

  … Overwrite the sample, inspect versions in the console, and retrieve an earlier version. Ordinary deletion in a versioned …

• HCL, Resource Addresses, and Project Layout

  Read Terraform blocks, expressions, references, and version constraints, and organize a root module clearly. Read a block Terraform …

• Reusable Modules and Clear Interfaces

  Build and call a small module, expose outputs, and define sensible module ownership and versioning. A module is …

• The Hot SKU Alert Problem

  … Decide whether alerts are per version or coalesced. Practical response 1. Commit one product version and an outbox …

• Message Delivery: Queues, Kafka, Ordering and DLQs

  … OrderPlaced(order id, version, event id) - inventory consumer group - email consumer group - analytics consumer group The outbox prevents …

• Design a File Storage Service

  … On completion verify parts/checksum and scan before marking the metadata version readable. 3. Use versioned metadata and …

• Microkernel (Plugin) Architecture

  … the only thing plug-ins may depend on Registry Knows which plug-ins exist, their versions, and how …

• Production Capstone and Interview Practice

  … It creates a private, encrypted, versioned bucket with owner tags. It publishes bucket id and bucket arn . Move …

• Putting AI Systems into Production

  Design dependable model integrations with fallbacks, observability, versioning, cost controls, and human review. The big idea A production …

• Safe AWS Deployments with IaC and CI/CD

  Keep infrastructure in version control, review changes before applying them, and deploy applications through repeatable automated steps. Two …

• REST API Design

  … resource naming, methods, status codes, pagination, versioning, errors and idempotency. The big idea A good API is like …

• Your First Terraform Project

  … Then check: bash terraform version mkdir terraform-first-lab cd terraform-first-lab These lessons use Terraform 1 …

• Kubernetes: Start Here

  … the short version Kubernetes (K8s) runs containers for you. It runs them on one or many servers, restarts …

• Design a Reliable Notification System

  … Create a durable notification intent with recipient, template version, channel and business-event identity. 2. Route urgent and …

• Deployments: Keep Your App Running

  Use a Deployment to keep app copies alive, release a new version safely, and undo a bad release …

• Practical Project: Deploy a Real CRM App on EKS

  … Prerequisites Install and configure these tools on your machine: Tool Check Used for --- --- --- AWS CLI v2 aws --version …

• API Contracts, Gateways and Security

  Make APIs evolvable and safe with explicit formats, versioning, idempotency, gateway policy, authentication and authorization. The problem in …

• Deploying & Operating Microservices

  CI/CD per service, blue-green and canary releases, feature flags, API versioning, distributed tracing and the production …

• Design a Ride-Sharing Service

  … Attempt a conditional assignment against the driver’s authoritative state, using ride ID and a lease/version. 3 …

• Database Indexing & Transactions

  … Each row has a version ; an update only succeeds if nobody changed the row since you read it …

• Binary Search

  … first bad version Versions 1..n; from some version on, every build is broken. Find the first broken …

• Big Data: ETL, Warehouses and Streaming

  … Land immutable raw events with IDs and schema versions. Separate ingestion from transformations. 2. Create curated datasets with …

• Releases, Observability and Production Safety

  … to prove it worked Exercise rollback with mixed versions and verify migration compatibility. Measure customer failures, detection time …

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

  … A versioned bucket cannot be removed until every version is gone, so use the empty command that handles …

• Event-Driven Architecture

  … store processed event IDs Ordering Partition by entity key (Kafka); include versions/timestamps Lost events when saving + publishing …

• Storage, Search and Location Queries

  … Build text-search and geospatial indexes asynchronously from versioned listing changes. Check authoritative visibility for sensitive or deleted …

• CloudFront: Faster Websites and Safer File Delivery

  … Give versioned assets a long cache lifetime because a new release uses a new filename. Give the HTML …

• AWS Data Pipelines in Plain Language

  … Record input version, transformation version, output location, and row counts. Re-running a job for the same input …

• Internals, Upgrades, Resilience and Interview Questions

  … Upgrade one minor version at a time (1.30 to 1.31, never skipping). 3. Upgrade order: control …

• Run Containers on AWS with ECR and ECS

  … Push an image with a real version tag, such as 1.2.0 , not only latest . 2. Create …

• Imports, Moved Blocks, and Safe Refactoring

  … For S3, public-access settings and versioning are separately managed resources; importing the bucket alone does not import …

• Data Preparation and Model Training

  … Keep preprocessing reproducible and versioned alongside the model. A fitted encoder or vocabulary is part of the model …

• State, Remote Backends, and Locking

  … Enable versioning, encryption, and public-access protection. Do not use the application bucket from lesson 5 as its …

• Secrets, Ephemeral Values, and Least Privilege

  … For a resource offering a write-only password and companion version field, a password rotation typically supplies a …

• Drift, Troubleshooting, and Disaster Recovery

  … Compare cloud inventory, resource addresses, and available backend versions. 4. Restore or repair through a reviewed recovery procedure …

• Extending Kubernetes: CRDs, Operators and Admission

  … backup versions: - name: v1 served: true storage: true subresources: status: {} schema: openAPIV3Schema: type: object properties: spec: type: object …

• Caching & Redis

  … responses safe to share Shared globally; purge or version when content changes In-process memory Tiny, very hot …

• How a Web Request Works

  … max-age=60").json(product); }); HTTP versions at a glance Version Year Key idea --- --- --- HTTP/1.1 1997 …