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James Lee

🚀 Senior LLM Engineer | RAG · AI Agents · LLMOps | Python · AWS · K8s

Location hangzhou, China Joined Joined on  Email address lijames193@gmail.com Personal website https://github.com/muzinan123 github website

Work

Senior LLM Engineer — RAG · AI Agents · LLMOps

From 60% to 93%: How We Built a Continuous Evaluation Framework for LLM Systems
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From 60% to 93%: How We Built a Continuous Evaluation Framework for LLM Systems

#ai #llm #machinelearning #testing
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9 min read

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Serverless Best Practices: Production Architecture, Stateless Design & Cost Optimization
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Serverless Best Practices: Production Architecture, Stateless Design & Cost Optimization

#architecture #aws #serverless #systemdesign
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10 min read
Serverless Workflows: Orchestrating Multi-Step Pipelines with AWS Step Functions
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Serverless Workflows: Orchestrating Multi-Step Pipelines with AWS Step Functions

#aws #python #serverless #tutorial
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5 min read
Event-Driven Automation: Building a Serverless Maintenance Bot with Lambda & EventBridge
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Event-Driven Automation: Building a Serverless Maintenance Bot with Lambda & EventBridge

#automation #aws #devops #serverless
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8 min read
Traffic Routing in AWS Lambda: Canary Deployments, Weighted Aliases & Blue/Green
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Traffic Routing in AWS Lambda: Canary Deployments, Weighted Aliases & Blue/Green

#aws #cicd #devops #serverless
Comments
7 min read
Auto Scaling in AWS Lambda: Concurrency, Throttling & Scale-to-Zero
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Auto Scaling in AWS Lambda: Concurrency, Throttling & Scale-to-Zero

#architecture #aws #performance #serverless
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7 min read
Lambda Triggers Explained: S3, EventBridge, API Gateway & SQS
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Lambda Triggers Explained: S3, EventBridge, API Gateway & SQS

#architecture #aws #serverless #tutorial
Comments
8 min read
Cold Start in AWS Lambda: Causes, Phases & How to Fix It
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Cold Start in AWS Lambda: Causes, Phases & How to Fix It

#architecture #aws #performance #serverless
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7 min read
Kubernetes Data Access Flow: How Network Traffic Moves Inside and Outside the Cluster
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Kubernetes Data Access Flow: How Network Traffic Moves Inside and Outside the Cluster

#infrastructure #kubernetes #linux #networking
Comments
5 min read
Kubernetes Resource Orchestration: How kubelet Prepares Storage, Network & Compute for Every Pod
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Kubernetes Resource Orchestration: How kubelet Prepares Storage, Network & Compute for Every Pod

#architecture #devops #infrastructure #kubernetes
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5 min read
Kubernetes Resource Scheduling: Filtering, Scoring & Priority Preemption
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Kubernetes Resource Scheduling: Filtering, Scoring & Priority Preemption

#architecture #devops #kubernetes #systemdesign
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4 min read
Kubernetes Control Flow: How Resources Are Created, Deleted, Modified & Queried
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Kubernetes Control Flow: How Resources Are Created, Deleted, Modified & Queried

#architecture #devops #kubernetes #tutorial
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4 min read
Kubernetes Logical Architecture: Control Plane vs Worker Nodes & Why the Control Plane Runs kubelet Too
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Kubernetes Logical Architecture: Control Plane vs Worker Nodes & Why the Control Plane Runs kubelet Too

#architecture #beginners #devops #kubernetes
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3 min read
Kubernetes Architecture Overview: Control Plane, Worker Nodes & the Container Stack
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Kubernetes Architecture Overview: Control Plane, Worker Nodes & the Container Stack

#architecture #devops #infrastructure #kubernetes
Comments
3 min read
Go Garbage Collection: Tri-Color Mark & Sweep, Write Barriers & STW Optimization
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Go Garbage Collection: Tri-Color Mark & Sweep, Write Barriers & STW Optimization

#algorithms #computerscience #go #performance
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5 min read
Go Compiler & defer: Bootstrap, Three defer Implementations, panic/recover & Closures
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Go Compiler & defer: Bootstrap, Three defer Implementations, panic/recover & Closures

#architecture #computerscience #go #programming
1
Comments
6 min read
Goroutine Scheduling: GMP Model, Schedule Loop, Preemption & Stack Management
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Goroutine Scheduling: GMP Model, Schedule Loop, Preemption & Stack Management

#architecture #computerscience #go #performance
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6 min read
Go System Calls & Blocking: syscall Wrapping, Async vs Sync & GMP Separation
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Go System Calls & Blocking: syscall Wrapping, Async vs Sync & GMP Separation

#architecture #computerscience #go #programming
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5 min read
Go I/O Optimization: goroutine-per-connection, netpoller & the Reader/Writer Interface
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Go I/O Optimization: goroutine-per-connection, netpoller & the Reader/Writer Interface

#computerscience #go #networking #performance
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5 min read
Go Heap Memory Allocation: tcmalloc, Mutator/Allocator & Multi-Level Cache
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Go Heap Memory Allocation: tcmalloc, Mutator/Allocator & Multi-Level Cache

#architecture #computerscience #go #performance
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5 min read
Go Performance Optimization: pprof, Flame Graphs & Hotspot Profiling
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Go Performance Optimization: pprof, Flame Graphs & Hotspot Profiling

#go #performance #tooling #tutorial
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4 min read
Tekton + Argo CD: Building a Complete GitOps Pipeline End-to-End
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Tekton + Argo CD: Building a Complete GitOps Pipeline End-to-End

#cicd #devops #kubernetes #tutorial
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4 min read
Argo CD Application Updates & Rollbacks: GitOps-Driven Version Control in Practice
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Argo CD Application Updates & Rollbacks: GitOps-Driven Version Control in Practice

#cicd #devops #git #kubernetes
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5 min read
Argo CD Application Management: Deploy to Multiple Clusters with a Unified View
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Argo CD Application Management: Deploy to Multiple Clusters with a Unified View

#automation #devops #kubernetes #tutorial
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6 min read
Argo CD Installation & Configuration: From Zero to Running in 10 Minutes
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Argo CD Installation & Configuration: From Zero to Running in 10 Minutes

#beginners #devops #kubernetes #tutorial
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5 min read
Argo CD Core Concepts & Architecture: The GitOps CD Engine for Kubernetes
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Argo CD Core Concepts & Architecture: The GitOps CD Engine for Kubernetes

#architecture #cicd #devops #kubernetes
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4 min read
Tekton in Practice: Building a Java CI/CD Pipeline from Scratch
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Tekton in Practice: Building a Java CI/CD Pipeline from Scratch

#cicd #java #kubernetes #tutorial
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6 min read
Tekton Concept Model: Steps, Tasks, Pipelines and How They Actually Run
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Tekton Concept Model: Steps, Tasks, Pipelines and How They Actually Run

#cicd #devops #kubernetes #tutorial
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5 min read
Tekton Components & Resource Objects: A Complete Overview
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Tekton Components & Resource Objects: A Complete Overview

#cicd #devops #kubernetes #tutorial
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4 min read
GitOps Continuous Delivery: Immutable Infrastructure, Pull Pipelines & Observability
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GitOps Continuous Delivery: Immutable Infrastructure, Pull Pipelines & Observability

#cicd #devops #git #infrastructure
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4 min read
GitOps vs DevOps: What's the Difference and How Do They Relate?
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GitOps vs DevOps: What's the Difference and How Do They Relate?

#automation #cicd #devops #git
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3 min read
What is GitOps? IaC, Git, and the Future of Cloud-Native CD
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What is GitOps? IaC, Git, and the Future of Cloud-Native CD

#cicd #devops #git #infrastructure
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5 min read
Python Object Model: How CPython Represents Everything as an Object
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Python Object Model: How CPython Represents Everything as an Object

#computerscience #programming #python #tutorial
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5 min read
Python list Internals: How Dynamic Arrays Work Under the Hood
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Python list Internals: How Dynamic Arrays Work Under the Hood

#algorithms #computerscience #performance #python
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5 min read
Python dict Internals: Hash Tables, Collision Resolution, and Hash Attacks
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Python dict Internals: Hash Tables, Collision Resolution, and Hash Attacks

#algorithms #computerscience #python #security
1
Comments 6
6 min read
Python GIL: Why One Lock Rules the Entire Interpreter
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Python GIL: Why One Lock Rules the Entire Interpreter

#architecture #computerscience #programming #python
1
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5 min read
Python Memory Optimization: How CPython's Memory Pool Works
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Python Memory Optimization: How CPython's Memory Pool Works

#architecture #computerscience #performance #python
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6 min read
Building a Production-Grade LLM Customer Service in 8 Weeks: Architecture Decisions, Pitfalls, and Best Practices
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Building a Production-Grade LLM Customer Service in 8 Weeks: Architecture Decisions, Pitfalls, and Best Practices

#ai #architecture #llm #systemdesign
3
Comments 2
13 min read
Production Optimization: Inference Cost and Performance Control
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Production Optimization: Inference Cost and Performance Control

#ai #architecture #llm #performance
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10 min read
Hybrid Knowledge Retrieval: Combining Neo4j Graph Queries, GraphRAG and Vector Search for Enterprise AI Customer Service
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Hybrid Knowledge Retrieval: Combining Neo4j Graph Queries, GraphRAG and Vector Search for Enterprise AI Customer Service

#neo4j #graphrag #rag #llm
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11 min read
Building Safety Guardrails for LLM Customer Service That Actually Work in Production
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Building Safety Guardrails for LLM Customer Service That Actually Work in Production

#ai #llm
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9 min read
From Single-Agent to Multi-Agent: Designing and Deploying an Enterprise-Grade Intelligent Customer Service System with LangGraph
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From Single-Agent to Multi-Agent: Designing and Deploying an Enterprise-Grade Intelligent Customer Service System with LangGraph

#multiagent #langgraph #llm #ai
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10 min read
Engineering GraphRAG for Production: API Design, Query Optimization, and Service Reliability
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Engineering GraphRAG for Production: API Design, Query Optimization, and Service Reliability

#graphrag #rag #python #llm
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6 min read
Production-Grade GraphRAG Data Pipeline: End-to-End Construction from PDF Parsing to Knowledge Graph
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Production-Grade GraphRAG Data Pipeline: End-to-End Construction from PDF Parsing to Knowledge Graph

#rag #graphrag #pdf #llm
Comments 1
9 min read
From 0 to MVP in 2 Weeks: Building a Production-Grade AI Customer Service System
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From 0 to MVP in 2 Weeks: Building a Production-Grade AI Customer Service System

#ai #llm #architecture #mvp
1
Comments
9 min read
MCP Framework: The "Swiss Army Knife" for AI System Integration — A GraphRAG Case Study
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MCP Framework: The "Swiss Army Knife" for AI System Integration — A GraphRAG Case Study

#mcp #llm #rag
6
Comments
5 min read
OpenManus Architecture Deep Dive: Enterprise AI Agent Development with Real-World Case Studies
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OpenManus Architecture Deep Dive: Enterprise AI Agent Development with Real-World Case Studies

#llm #ai #manus
13
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8 min read
CrewAI for Marketing Research: Building a Multi-Agent Collaboration System
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CrewAI for Marketing Research: Building a Multi-Agent Collaboration System

#llm #agents #crewai
11
Comments 4
5 min read
Breaking Limitations: Advanced Customization Guide for Dify Platform
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Breaking Limitations: Advanced Customization Guide for Dify Platform

#llm #ai #llmops
8
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8 min read
Multi-Agent Hybrid Knowledge Base Retrieval: Building a High-Precision Legal Case Analysis Platform
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Multi-Agent Hybrid Knowledge Base Retrieval: Building a High-Precision Legal Case Analysis Platform

#llm #agents #langgraph #ai
7
Comments 1
7 min read
Building LLM-Powered Real Estate Intelligent Agents: Technical Implementation and Business Value
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Building LLM-Powered Real Estate Intelligent Agents: Technical Implementation and Business Value

#ai #llm #langchain #agents
16
Comments 6
8 min read
n8n and AI Agents: Breaking Boundaries in Enterprise-Grade Consulting
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n8n and AI Agents: Breaking Boundaries in Enterprise-Grade Consulting

#ai #n8n #llm #agents
12
Comments 1
6 min read
Building a Medical Literature Assistant: RAG System Practice Based on LangChain
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Building a Medical Literature Assistant: RAG System Practice Based on LangChain

#llm #ai #langchain #rag
15
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14 min read
Build an enterprise-level financial data analysis assistant: multi-source data RAG system practice based on LangChain
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Build an enterprise-level financial data analysis assistant: multi-source data RAG system practice based on LangChain

#llm #ai #python #machinelearning
9
Comments 1
16 min read
Enterprise-Level Deployment and Optimization of LLM Applications: A Production Practice Guide Based on LangChain
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Enterprise-Level Deployment and Optimization of LLM Applications: A Production Practice Guide Based on LangChain

#langchain #architecture #llm #productivity
6
Comments 1
15 min read
Design and Implementation of LLM-based Intelligent O&M Agent System
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Design and Implementation of LLM-based Intelligent O&M Agent System

#aiops #agents #llm #devops
9
Comments 1
5 min read
Building Enterprise-Level Data Analysis Agent: Architecture Design and Implementation
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Building Enterprise-Level Data Analysis Agent: Architecture Design and Implementation

#agents #llm #ai #architecture
6
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9 min read
Building an Intelligent Customer Service Agent System from Scratch
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Building an Intelligent Customer Service Agent System from Scratch

#agents #llm #architecture #ai
5
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5 min read
Agent Task Orchestration System: From Design to Production
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Agent Task Orchestration System: From Design to Production

#agents #llm #architecture #systemdesign
7
Comments
4 min read
LangGraph State Machines: Managing Complex Agent Task Flows in Production
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LangGraph State Machines: Managing Complex Agent Task Flows in Production

#langgraph #python #langchain #architecture
23
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3 min read
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