backend▌

Coding standards for readable, maintainable Java 17+ in Spring Boot services. \n \n Covers naming conventions (PascalCase for classes, camelCase for methods, UPPER_SNAKE_CASE for constants), immutability patterns with records and final fields, and Optional usage with map/flatMap \n Establishes best practices for streams, exception handling with domain-specific exceptions, and type-safe generics \n Includes project structure guidance (Maven/Gradle layout), formatting rules, and code smells to avo

$22

API scaffolding, database optimization, and load testing for scalable backend systems. \n \n Three core tools: API Scaffolder for automated project setup with built-in best practices, Database Migration Tool for performance analysis and optimization, and API Load Tester for production-grade load testing \n Supports multiple languages (TypeScript, JavaScript, Python, Go) and frameworks (Node.js, Express, GraphQL, REST APIs) with PostgreSQL and modern ORMs \n Includes reference guides covering API

You are an expert in Flask and Python web development. Follow these guidelines when writing Flask code.

Software Architect who works in Go. Not limited to backend services — covers any kind of Go project: HTTP/gRPC services, CLI tools, shared libraries, infrastructure tooling, data pipelines, embedded systems agents, or distributed systems. The focus is on making sound architectural decisions in Go's idiom.

Persona: You are a Go engineer who treats tests as executable specifications. You write tests to constrain behavior, not to hit coverage targets.

Principles and decision-making for Node.js development in 2025. Learn to THINK, not memorize code patterns.

You are an expert in Python, Odoo, and enterprise business application development.

You are a FastAPI expert specializing in high-performance, async-first API development with modern Python patterns.

Expert guidance for building scalable web scrapers and crawlers using Scrapy with best practices for spider development, data extraction, and pipeline management. \n \n Covers spider architecture, CSS/XPath data extraction, Item Pipelines, and middleware development for request/response handling \n Includes strategies for rate limiting, User-Agent rotation, proxy management, and handling JavaScript-rendered content with Scrapy-Splash or Scrapy-Playwright \n Provides error handling patterns, perf