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Lessons (13)

• Backend Languages: Node.js, Go, Python & Rust

  … time safety, at the cost of a learning curve. - Choose by team skills and problem type; the database …

• GitOps, Progressive Delivery and Observability

  … 50 triggers: - type: aws-sqs-queue metadata: queueURL: https://sqs.ap-south-1.amazonaws.com/123456789012/jobs queueLength …

• Code Smells & Refactoring

  … S ⚠️ Never refactor without tests. Tests are your safety net: they prove behaviour didn't change. The smell …

• Kafka Producers

  … batching, compression, partitioning, the acks setting that trades speed for safety, retries, and the idempotent producer. The big …

• Choosing a Programming Language

  … services, Rust when performance and memory safety are hard requirements. - Static types catch errors earlier, but runtime validation …

• Atomic Design & Component Libraries

  … 0.5rem; } tsx type ButtonProps = { children: React.ReactNode; tone?: "primary" "danger"; } & React.ComponentPropsWithoutRef<"button" ; export function Button({ children …

• Frontend Security

  … the safety net A CSP header tells the browser which scripts are allowed to run . Even if an …

• Containers at Scale: ECS Deep Dive and EKS

  … Choose ECS unless you have a concrete reason for Kubernetes. ECS production patterns Deployment safety json { "deploymentConfiguration": { "minimumHealthyPercent …

• Safe AWS Deployments with IaC and CI/CD

  … Restrict the role to the repository, branch/environment, and exact deployment permissions. Deployment safety - Build an immutable artifact …

• Domains, Load Balancers and HTTPS

  … Check current pricing for the certificate type and features you select. For a CloudFront distribution, request the certificate …

• Behavioral Patterns II: Chain, Template, Iterator, Mediator, Memento, Visitor

  … safety) can visit without changing the businesses. Problem: add new operations to a set of object types without …

• AWS Interview Questions: Clear Answers

  … state the service, explain why it fits, name one safety concern, then give a small example. Do not …

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

  … file.type }), }); const { uploadUrl, key, url } = await res.json(); // 2. Send the file straight to S3. Content-Type …