Jonathan Shaffer jonshaffer

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Research: UniFi API CRUD Operations & Terraform Lifecycle Mapping

Verified against live UniFi controller on 2026-03-28. Controller firmware: UniFi Network Application (Dream Machine Pro).

Summary of Findings

The original spec and data-model.md assumptions were partially wrong. Key corrections:

DNS v2 API supports PUT — the bash scripts use delete+recreate but that's a choice, not a constraint

Pull Request Review Time Analysis

Dataset: 76,227 merged PRs from 25 open-source repositories Analysis Date: December 2025 Target Variable: review_time_hours (time from PR creation to merge)

Executive Summary

⏺ Hygiene Signal Types Summary

Based on the signal research in your spec directory, here are the 9 major categories with the best-fit examples for a Backstage plugin:

🔒 Security & Dependencies

Dependabot Alerts - CVEs in npm/pip dependencies
Container Image Vulnerabilities - Trivy/Grype scan results
EPSS Scores - Exploit prediction (likelihood of exploitation within 30 days)

Legend: ★ = must-know, ◇ = nice-to-have.

Core Data Structures

★ Arrays & Dynamic Arrays (indexing, resizing, cache locality)
★ Linked Lists (singly/doubly, cycle detection)
★ Stacks & Queues (array vs. linked, deque)
★ Hash Tables (hashing, collisions, load factor, open addressing vs chaining)
★ Trees (binary tree traversals; BST invariants)
★ Heaps/Priority Queues (binary heap ops; k-way merge; top-k)

Legend: ★ = must-know, ◇ = nice-to-have.

Classification

★ Logistic Regression — linear decision boundary; well-calibrated probs, fast baseline.
◇ k-Nearest Neighbors — vote of nearby points; non-parametric, can be slow at scale.
★ Naive Bayes (Gaussian/Multinomial) — assumes feature independence; great for text.
★ Support Vector Machines (SVM) — max-margin hyperplane; kernels handle nonlinearity.
★ Decision Tree — if-then rules; interpretable, prone to overfit without pruning.
★ Random Forest — bagged trees; strong default, robust to noise, handles mixed types.

Real-Time Updates in SwiftUI

Prompt to Make The Prompt

Used Gemini 2.5 Pro

This came from a convo where I said:

How do people do live updates in swift apps

	# Ignore log directories and files
	*/.logs/
	*/logs/
	*.log

	# Ignore temporary and cache files
	*.tmp
	*.swp
	.DS_Store
	*/.DS_Store

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	CALSCALE:GREGORIAN
	METHOD:PUBLISH
	BEGIN:VEVENT
	UID:munhall-holiday-newyear'sday-2025@chatgpt
	DTSTART;VALUE=DATE:20250101
	DTEND;VALUE=DATE:20250102
	SUMMARY:New Year's Day (Collection Delayed)

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	"title": "Learning Practice Deck Schema (v4 - Deck Object)",
	"description": "A schema for representing a deck of learning practice content (flashcards, quizzes) including metadata about the deck itself and a hierarchical topic structure.",
	"type": "object",
	"properties": {
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	"description": "Unique identifier for the learning deck (e.g., UUID).",
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