Search

Lessons (40)

• Prompting and Structured Outputs

  Write clear instructions, provide context and examples, constrain responses, and validate model output in code. The big idea …

• Variables, Locals, Outputs, and Validation

  Build a configurable local lab with typed inputs, useful outputs, and clear validation errors. Replace hard-coded values …

• Reusable Modules and Clear Interfaces

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

• Production Capstone and Interview Practice

  … Add root outputs forwarding module.storage.bucket id and module.storage.bucket arn . The trailing hyphen in the …

• Putting AI Systems into Production

  … input validation, retrieval or context, provider calls, output checks, user experience, monitoring, and operational controls. The model is …

• AI Evaluation, Safety, and Security

  … Define what “good” means before reviewing outputs. For a support-answering system, a rubric might check factual support …

• Transformers and Large Language Models

  … Fluent output is not proof that a statement is true. mermaid flowchart LR T[Text] -- TOK[Tokenizer] TOK …

• Secrets, Ephemeral Values, and Least Privilege

  … Hiding a value in ordinary CLI output does not remove it from every artifact. Technique What it provides …

• AI Specialties and Real-World Examples

  … Choose the output your workflow actually needs. For a warehouse camera, split data by relevant conditions such as …

• Neural Networks and Deep Learning

  … Each layer transforms its input; training adjusts the parameters so the network's output reduces a chosen loss …

• Your First Terraform Project

  … The output returns the created file's path. Initialize and preview bash terraform init terraform fmt terraform validate …

• Clean Architecture in Depth

  … shaping the output In the "pure" version, the use case doesn't return data. It calls an output …

• Testing, Preconditions, and Policy Checks

  … Create tests/service.tftest.hcl : hcl run "api filename contract" { command = plan assert { condition = endswith(output.api config …

• Providers and Your First AWS Resources

  … Inspect the actual plan if provider behavior or configuration changes. Verify and clean up Using the output as …

• Onion Architecture & Clean vs Hexagonal vs Onion

  … Hexagonal → ports/adapters and input/output symmetry; Onion → layers inside the core; Clean → the Dependency Rule, use cases …

• What to Learn in AI, and in What Order

  … 5. Generative AI: Learn tokens, transformers, context windows, prompting, structured outputs, embeddings, retrieval-augmented generation (RAG), and tool …

• HCL, Resource Addresses, and Project Layout

  … Exit with exit . Practice: split the local lab across versions.tf , main.tf , and outputs.tf . Run plan …

• AWS Data Pipelines in Plain Language

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

• Big Data: ETL, Warehouses and Streaming

  … Correct the transformation and replay the raw partition into a versioned output. Publish the replacement atomically instead of …

• What Is Artificial Intelligence? A Developer's Guide

  … Validate outputs and enforce permissions in application code. 6. Monitor failures and provide a fallback. Try it yourself …

• Developer Learning Plan and Document-Assistant Capstone

  … 5. Check responses: verify source identifiers, output shape, and cited support. Citation presence alone is not enough. 6 …

• AI Agents and Tool Use

  … Prefer a deterministic workflow when steps are known, outputs must be exact, or actions have high consequences. Autonomy …

• Count, for_each, Functions, and Stable Identities

  … jsonencode({ name = each.key port = each.value.port }) } output "service files" { value = { for name, file in local file …

• Batch vs Stream and Data Modeling

  … Measure stream freshness, late-event count and reconciliation differences; streaming speed is useful only when outputs are correct …

• Dependencies, Data Sources, and Resource Lifecycle

  … vpc id } variable "existing vpc id" { type = string } output "existing cidr" { value = data.aws vpc.existing.cidr block …

• Machine Learning Fundamentals

  … a developer writes rules that turn inputs into outputs. In machine learning, we provide examples and an objective …

• Python Web APIs: FastAPI and Django

  … 201 JSON end 💡 Separate input and output models. response model filters the response, so a field like password …

• Drift, Troubleshooting, and Disaster Recovery

  … apply observed.tfplan Refresh-only updates state and outputs to observed remote values without changing managed infrastructure. It …

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

  … true } } EOF aws cloudfront create-distribution --distribution-config file://distribution.json \ --query 'Distribution.[Id,DomainName]' --output text Save …

• React vs Vue vs Angular

  … defineProps input() Events out callback props defineEmits / $emit output() Conditional {cond && <X/ } v-if @if List items.map …

• L — Liskov Substitution Principle

  … t reject negatives Return the same or narrower outputs Don't loosen postconditions Parent returns an array → child …

• Practical Project: Deploy a Real CRM App on EKS

  … IMAGE: ${{ steps.ecr.outputs.registry }}/${{ env.REPOSITORY }}:git-${{ github.sha }} run: docker build -t "$IMAGE" . docker push "$IMAGE …

• Delivery Guarantees: At-Most, At-Least & Exactly Once

  … Kafka transactions make "write the output + commit the input offset" one atomic step: either both happen or neither …

• TypeScript Essentials

  … They're erased from the output, so TypeScript adds zero runtime cost. ts function total(price: number, quantity …

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

  … The output should identify B and the assumed reader role. Calling assume-role in one command does not …

• Async JavaScript: Promises, async/await and Node's Event Loop

  … console.log("sync"); <details <summary What's the output?</summary text sync nextTick promise timeout (these two can …

• Safe AWS Deployments with IaC and CI/CD

  … academy-lab Outputs: BucketName: Value: !Ref UploadsBucket CloudFormation generates a bucket name, avoiding a hard-coded naming collision …

• TypeScript in Practice

  … the compiler outputs plain JavaScript, and no types exist at runtime . That gives one golden rule: types describe …

• CloudWatch: Know What Your App Is Doing

  … In Lambda, application output is sent to configured logging destinations when its role and settings allow it. In …

• AWS Messaging: Queues, Topics and Events

  … Use deterministic output keys or a provider-supported idempotency key so a retry does not repeat the side …