jmdevelops

Learning & Notes

Knowledge Base.

Everything I study and build — architecture, cloud-native systems, and the engineering decisions behind them. Search or filter by topic.

Go
LIVE

Go, REST & gRPC — Architect's Edition

Interactive dashboard covering the Go mental model, distributed systems, production & observability, cloud-native patterns, ADRs, and 10 system-design scenarios.

GogRPCKubernetesSRE
SD
Planned

System Design Notes

A reusable playbook: requirement → constraints → candidate technologies → tradeoffs → decision.

ArchitectureAWS
OB
Planned

Observability & SLOs

RED metrics, the four golden signals, distributed tracing, and error budgets that actually mean something.

SREPrometheus
K8s
Planned

Kubernetes Operators

The reconcile loop in practice — controllers, CRDs, and controller-runtime for platform engineering.

GoKubernetes
$
Planned

AWS Cost Architecture

Designing through cost: cross-AZ traffic, scale-to-zero, and the spend tradeoffs behind each architecture choice.

AWSCost
GC
Planned

Go Concurrency Patterns

Goroutines, channels, select, worker pools, and context — with the failure modes that bite in production.

GoConcurrency