performance-optimization

Profiles, reduces frontend/backend costs: split bundles, optimize assets, apply caching, fix Core Web Vitals regressions. Use when profiling Lighthouse/CI regressions, reducing bundle size, or fixing high CLS/LCP/TTI metrics.

1.00x

Quality

96%

Does it follow best practices?

Impact

90%

1.00x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Evaluation results

100%

Live Search Component Overhaul

React search component performance

Criteria

Without context

With context

Debounce input events

100%

Stable key props

100%

CSS classes not inline styles

100%

Dynamic import for heavy component

100%

No eager fetch on every keystroke

100%

Event listener cleanup

100%

No profiling-free memoization

100%

Lazy image loading

100%

GPU CSS animations

100%

Map/Set for lookup

100%

styles.css produced

100%

97%

-3%

Log File Analysis API Endpoint

Node.js log analysis API

Criteria

Without context

With context

No *Sync API usage

100%

Streams for file reading

100%

Map or Set for counting

100%

No O(n²) sort/search

100%

No blocking hot-path ops

100%

Async endpoint handler

100%

70%

Correct JSON response shape

100%

Notes on design choices

100%

Large payload not buffered unnecessarily

100%

Error handling for missing file

100%

73%

-6%

Web Performance Regression Investigation

Lighthouse regression profiling workflow

Criteria

Without context

With context

Profiling workflow documented

100%

92%

Improvement threshold stated

100%

Rollback plan mentioned

50%

font-display: swap

100%

WebP or AVIF images

100%

Lazy image loading

100%

Cache-busting in build config

100%

esbuild or Rollup used

Dynamic import / code split

75%

62%

Font subsetting noted

50%

Long-lived cache headers noted

100%

33%

Measure-first principle

100%

Repository: monkilabs/opencastle
Commit: 7a69a05

Evaluated: about 1 month ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Live Search Component Overhaul Log File Analysis API Endpoint Web Performance Regression Investigation

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