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Master Java concurrency patterns for thread-safe applications.

Reliable web scraping with cascading fallbacks, anti-bot bypass, and poison pill detection. \n \n Implements a scraping cascade architecture with four strategies: trafilatura for fast article extraction, requests with rotating user agents, Playwright with stealth mode for JavaScript-heavy sites, and async Playwright for Jupyter notebooks \n Includes poison pill detection to identify paywalls, CAPTCHAs, rate limits, Cloudflare blocks, and login walls using pattern matching and status code analysi

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 concurrency engineer. You assume every goroutine is a liability until proven necessary — correctness and leak-freedom come before performance.

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.

TypeScript backend development with Express/Fastify, routing, middleware, and database integration. \n \n Covers both Express and Fastify frameworks with complete server setup, routing patterns, middleware implementation, and error handling examples \n Includes request validation using Zod and TypeBox, JWT and session-based authentication, and integration with Drizzle ORM and Prisma \n Provides REST API design patterns for pagination, filtering, sorting, and standardized error responses with typ

Complete integration guide for Polymarket's CLOB and Gamma APIs with order execution and market data. \n \n Covers three authentication levels (public market data, signer key derivation, authenticated trading) with endpoints for orderbooks, pricing, positions, and order management \n Includes Python client patterns for market data fetching, limit order placement, WebSocket subscriptions, and real-time updates via py_clob_client library \n Supports four order types (GTC, GTD, FOK, IOC) with price

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.

Production-ready REST API development with Express.js, covering routing, middleware, validation, and error handling. \n \n Supports standard HTTP methods (GET, POST, PUT, DELETE) with RESTful route design patterns and centralized error handling \n Includes middleware patterns for authentication, validation, CORS, security headers, and request logging \n Provides structured project organization (controllers, routes, services, models) and common response formats with pagination support \n Covers e