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Lessons (11)

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

  … P[Python / FastAPI] Q -- Maximum performance and safety,<br/ low memory R[Rust] 💡 Team skills beat benchmarks. A …

• Your Practical Kubernetes Workflow

  … Do not delete or restart things until you understand the event or error. Minimum safety rules - Use a …

• GitOps, Progressive Delivery and Observability

  … 10 minutes. - Node NotReady , disk or memory pressure. - CPU throttling and memory near limit. - PVC almost full, certificate …

• Timeouts, Retries & Backpressure

  … Accepting all work in memory makes every user wait and may crash the service. Instead, keep a durable …

• Choosing a Programming Language

  … Go for network services, Rust when performance and memory safety are hard requirements. - Static types catch errors earlier …

• Internals, Upgrades, Resilience and Interview Questions

  … Requests vs limits, and what are QoS classes? Requests drive scheduling; limits are runtime ceilings (CPU throttles, memory …

• 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 …

• Frontend Security

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

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

  … New inspectors (health, fire safety) can visit without changing the businesses. Problem: add new operations to a set …

• Backend Design Scenarios

  … The database unique constraint is the final safety net. A timeout means “unknown,” not “failed.” Use an outbox …

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

  … This is the safety net: even if someone later pastes a public policy by mistake, S3 refuses it …