performance▌

Identifies and eliminates performance bottlenecks in Flutter apps through systematic profiling and targeted optimization. \n \n Provides a decision tree to diagnose jank on UI thread, Raster (GPU) thread, or both, with specific fixes for each \n Includes integration test templates using traceAction and TimelineSummary to establish performance baselines and measure frame budgets \n Covers UI optimization (localizing state, const constructors, StringBuffer usage) and Raster optimization (replacing

Scan C#/.NET code for performance anti-patterns and produce prioritized findings with concrete fixes. Patterns sourced from the official .NET performance blog series, distilled to customer-actionable guidance.

Caches configuration phase across builds (AGP 8.0+):

Profile and optimize Python code using cProfile, memory profilers, and performance best practices. \n \n Covers CPU profiling with cProfile, line-by-line profiling with line_profiler, memory tracking with memory_profiler, and production profiling with py-spy \n Includes 20+ optimization patterns: list comprehensions, generators, string concatenation, dictionary lookups, NumPy vectorization, caching, multiprocessing, and async I/O \n Provides database optimization techniques including batch opera

Diagnose and fix performance bottlenecks across React frontends and database backends. \n \n Covers frontend optimization: React.memo, useMemo, useCallback, lazy loading, code splitting, image optimization, and bundle analysis \n Includes backend strategies: N+1 query fixes, database indexing, Redis caching, and API compression \n Provides measurement tools and workflows using Lighthouse, Web Vitals, and webpack-bundle-analyzer \n Emphasizes profiling first, incremental improvements, and continu

High-performance React Native animations and 2D graphics with Reanimated v4 and Shopify Skia. \n \n Covers gesture-driven interactions, spring/timing transitions, layout animations, and Reanimated CSS transitions/keyframe animations without custom worklets \n Supports Skia Canvas scenes with runtime effects, shader uniforms, path interpolation, and animated drawing primitives \n Includes dev-mode tuning panels with sliders for real-time animation config and shader uniform adjustment \n Provides

Comprehensive performance optimization guide for Expo React Native applications. Contains 42 rules across 8 categories, prioritized by impact to guide automated refactoring and code generation.

Diagnose and fix SwiftUI performance issues through code review and Instruments profiling guidance. \n \n Classifies symptoms (slow rendering, janky scrolling, CPU spikes, memory growth, hangs, excessive view updates) and performs code-first review against common anti-patterns like invalidation storms, unstable list identity, and layout thrash. \n Guides users through Instruments profiling when code review alone is inconclusive, with structured intake checklists and trace analysis. \n Provides r

Apply when optimizing GSAP animations for smooth 60fps, reducing layout/paint cost, or when the user asks about performance, jank, or best practices for fast animations.

Optimize JVM performance through profiling, GC tuning, and memory analysis.