llm-app-patterns

# 🤖 LLM Application Patterns > Production-ready patterns for building LLM applications, inspired by [Dify](https://github.com/langgenius/dify) and industry best practices. ## When to Use This Skill Use this skill when: - Designing LLM-powered applications - Implementing RAG (Retrieval-Augmented Generation) - Building AI agents with tools - Setting up LLMOps monitoring - Choosing between agent architectures --- ## 1. RAG Pipeline Architecture ### Overview RAG (Retrieval-Augmented Generation) grounds LLM responses in your data. ``` ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │ Ingest │────▶│ Retrieve │────▶│ Generate │ │ Documents │ │ Context │ │ Response │ └─────────────┘ └─────────────┘ └─────────────┘ │ │ │ ▼ ▼ ▼ ┌─────────┐ ┌───────────┐ ┌───────────┐ │ Chunking│ │ Vector │ │ LLM │ │Embedding│ │ Search │ │ + Context│ └─────────┘ └───────────┘ └───────────┘ ``` ### 1.1 Document Ingestion ```python # Chunking strategies class ChunkingStrategy: # Fixed-size chunks (simple but may break context) FIXED_SIZE = "fixed_size" # e.g., 512 tokens # Semantic chunking (preserves meaning) SEMANTIC = "semantic" # Split on paragraphs/sections # Recursive splitting (tries multiple separators) RECURSIVE = "recursive" # ["\n\n", "\n", " ", ""] # Do...