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Build Notes

Builder summary

Built an interactive LFU (Least Frequently Used) Cache Visualizer as a single-page HTML app. The implementation includes:

  • O(1) LFU Cache: Proper implementation with frequency buckets (freqMap) and key map for true O(1) get/put operations
  • LRU Comparison Mode: Side-by-side visualization showing how LRU and LFU make different eviction decisions
  • Interactive Controls: Put/Get operations, capacity slider, preset patterns (sequential, hot keys, alternating, random)
  • Pattern Playback: Auto-play and step-through modes for demonstrating cache behavior
  • Visual Feedback: Color-coded hit/miss/eviction indicators, frequency badges with gradient colors
  • Mobile Responsive: Works on 375px+ viewports with touch-friendly controls

Stack: Vanilla HTML/JS/CSS (no build step, no dependencies) Deploy: GitHub Pages via Actions workflow

Code review

  • Cycle 1: APPROVED (manual review - sub-agent unavailable)
  • Cycle 2: N/A
  • Cycle 3: N/A

Smoke tests

  • HTML parse check: PASSED
  • Workflow YAML valid: PASSED

BUILD-DONE: 2026-04-11T12:24:00Z

Writer / Deployment

  • README.md: Written with features, usage, technical details
  • docs/index.md: Written with LFU explanation, visualization guide, preset patterns
  • GitHub Pages: Enabled and deployed
  • Live URL: https://forging-moon.github.io/lfu-cache/
  • Verification: HTTP 200 confirmed with non-trivial content
  • Marketplace: Registered

DEPLOY-DONE: 2026-04-11T12:30:00Z