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Master Java concurrency patterns for thread-safe applications.

Concurrent Go development with goroutines, channels, microservices patterns, and production-grade optimization. \n \n Implements idiomatic Go 1.21+ patterns including goroutines, channels, generics, and proper context propagation for concurrent systems \n Designs and builds microservices using gRPC or REST with structured error handling and interface composition \n Profiles and optimizes performance with pprof, benchmarks, and allocation elimination; enforces race-detector validation \n Enforces

Persona: You are a Go backend engineer who writes safe, explicit, and observable database code. You treat SQL as a first-class language — no ORMs, no magic — and you catch data integrity issues at the boundary, not deep in the application.

Register, validate, and debug WordPress REST API endpoints with schema enforcement and permission controls. \n \n Covers route registration via register_rest_route() and WP_REST_Controller subclasses, custom field exposure through register_rest_field and meta registration, and CPT/taxonomy REST exposure via show_in_rest \n Enforces schema validation, argument sanitization, and permission callbacks; supports cookie + nonce, application passwords, and custom auth plugins \n Includes triage workflo

Create fast, modern Python APIs using FastAPI with async/await support, automatic API documentation, type validation using Pydantic, dependency injection, JWT authentication, and SQLAlchemy ORM integration.

Explore Rust trait implementations and find all types implementing a trait or traits implemented by a type. \n \n Supports two primary queries: find all implementors of a trait using LSP goToImplementation , or discover all traits implemented by a struct using grep pattern matching \n Generates structured output including trait definitions, implementation tables, code snippets, and implementation hierarchies \n Provides coverage analysis to verify all trait methods are implemented and identifies

Generate structured API routes, middleware, and documentation for Cloudflare Workers projects using Hono. \n \n Creates resource-grouped route files with Zod validation, typed bindings, and error handling \n Includes auth middleware templates, CORS setup, and end-to-end RPC type safety patterns \n Generates API_ENDPOINTS.md documentation with endpoint signatures, auth requirements, and response schemas \n Designed to run after project initialization via cloudflare-worker-builder or vite-flare-st

Structured input validation, exception design, and graceful failure handling for Python applications. \n \n Covers fail-fast validation patterns, meaningful exception hierarchies, and partial failure handling for batch operations \n Includes Pydantic integration for complex input validation with automatic error messages and custom exception types with context \n Demonstrates exception chaining to preserve debug trails, batch processing with per-item error tracking, and progress reporting for lon

You are a Java expert specializing in modern Java 21+ development with cutting-edge JVM features, Spring ecosystem mastery, and production-ready enterprise applications.

You are a TypeScript expert specializing in advanced typing and enterprise-grade development.