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Lessons (9)

• Python and Math Foundations with Runnable Examples

  … rain indicator weights = [2.0, 0.5, 4.0] bias = 5.0 prediction = sum(x w for x …

• Message Queues & RabbitMQ

  … each message → EVERY subscriber"] Pr2[Producer] -- X{{exchange}} X -- QA[(email queue)] -- SA[Email svc] X -- QB[(analytics …

• MVC, MVP & MVVM

  … How each works, how data flows, and where you meet them in Rails, Express, Angular, Vue and React …

• Machine Learning Fundamentals

  … 17, "rain mm": 3.0} predicted minutes = model.predict(features) The prediction is useful only if the input …

• Serverless Architecture

  … invest in structured logs, tracing (X-Ray / OpenTelemetry) Cost at sustained high load Containers or VMs can be …

• Rust: Ownership, Borrowing and Lifetimes

  … automatic cleanup (RAII) When an owner goes out of scope, Rust calls drop automatically. This frees memory and …

• Python Fundamentals

  … print(i, item) for a, b in zip(["x", "y"], [1, 2]): iterate two lists together print(a …

• CloudWatch: Know What Your App Is Doing

  … X-Ray/OpenTelemetry traces a request across components. CloudTrail records AWS account actions, such as who changed a …

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

  … Production checklist Done in this lab: - [x] Bucket is private with Block Public Access on - [x] CloudFront reads …