JamesTryand/GeneralNotes

GeneralNotes

Starting a Company

• Y-Combinator startup school : https://www.youtube.com/playlist?list=PLQ-uHSnFig5NVnJ_cLWM7dLuMQRDeekoX
• Business Model Canvas : https://en.wikipedia.org/wiki/Business_Model_Canvas
• Simon Wardley & Wardley Maps
• Ben Hall
  • katacoda https://www.katacoda.com/

Containerization

• Docker
• Alternative to docker KKT
• Docker Swarm (docker compose)

Kubernetes

• Overview

• Tooling

  • k9s https://github.com/derailed/k9s
  • kubectx https://github.com/ahmetb/kubectx manage contexts
  • kubens https://github.com/ahmetb/kubectx manage namespaces
  • popeye https://github.com/derailed/popeye config linting
  • stern https://github.com/wercker/stern log management
  • k3s https://k3s.io/ kubernetes for IoT
  • Docker for Desktop ( now contains kubernetes)
  • Helm https://helm.sh package management for kubernetes
  • Draft https://draft.sh make k8s projects
  • Kompose https://kompose.io use docker-compose with kubernetes

• Orchestration

• ServiceMesh

  • Istio
  • Envoy
  • Knative

  https://dzone.com/articles/50-useful-docker-tools https://dzone.com/articles/50-useful-kubernetes-tools

Development

• Keep the feedback loop as small as possible
• REPL + test & commit || revert
• Nulls mean keep Redesigning
• Immutability
  • operations to update - return a new object with the new versions.
• Union Types
• Builder Model

Testing

Architecture

• EventStorming Albert Brandolini
  • Event Modelling Adam Dymitruk
• CQRS
  • Split the model
  • Do the work up front
• CAP Theorem ( Consistentcy, Availability and Partition Tolerance )
• CSP ( Communicating Sequential Processes )
• CEP ( complex event processing )
  • Reactive Programming (Rx)
  • fits into the the CQRS readmodel update pattern.
• Eventsourcing

Workflow

• gitops
• gitlab

Bigscale

• Daniel Lemire
• Inverted Indices for Scale
• Lambda Architecture (Batch model + differences from streaming updates merged togteher )
• Kafka
• Cassandra column store
• Druid based upon cassandra, but aggregates results from an eventsource
• Mongo - you're probably doing it wrong document based duplication is good joining is BAD updates based upon CQRS readmodel pattern (ie. background inserts/updates using queue/messagebus fed handlers)

Security

• Keycloak
• Metron (SIEM) https://metron.apache.org/

Web Development

• JAM Stack https://jamstack.org/ JavaScript, reusable APIs, and prebuilt Markup

Languages

• Use better languages 'functional first languages'
  • F# ( .net core is now crazy performant)
  • golang
  • Clojure