diff --git a/env.example b/.env.example
similarity index 63%
rename from env.example
rename to .env.example
index 30faaeac..e9315aa9 100644
--- a/env.example
+++ b/.env.example
@@ -1,12 +1,62 @@
-### This is sample file of .env
+# ==============================================
+# LIGHTRAG CONFIGURATION
+# ==============================================
+OPENAI_API_KEY=sk-your-openai-api-key-here
 
-
-### Server Configuration
+# Server Configuration
 HOST=0.0.0.0
 PORT=9621
-WEBUI_TITLE='My Graph KB'
-WEBUI_DESCRIPTION="Simple and Fast Graph Based RAG System"
-OLLAMA_EMULATING_MODEL_TAG=latest
+WEBUI_TITLE=LightRAG - Graph KB
+WEBUI_DESCRIPTION=Graph-based RAG with PostgreSQL and pgvector
+
+# LLM Configuration for LightRAG (OpenRouter)
+LLM_BINDING=openai
+LLM_MODEL=openai/o3-mini
+LLM_BINDING_HOST=https://openrouter.ai/api/v1
+LLM_BINDING_API_KEY=sk-your-openai-api-key-here
+
+
+# Embedding Configuration for LightRAG (OpenAI direct)
+# EMBEDDING_BINDING=openai
+# EMBEDDING_MODEL=text-embedding-ada-002
+# EMBEDDING_DIM=1536
+# EMBEDDING_BINDING_HOST=https://api.openai.com/v1
+# EMBEDDING_BINDING_API_KEY=sk-your-openai-api-key-here
+EMBEDDING_BINDING=openai
+EMBEDDING_MODEL=gemini-embedding-001 
+EMBEDDING_DIM=3072
+EMBEDDING_BINDING_HOST=https://generativelanguage.googleapis.com/v1beta/openai/
+EMBEDDING_BINDING_API_KEY=AI-your-gemini-api-key-here
+
+# Storage Backend Configuration
+LIGHTRAG_KV_STORAGE=PGKVStorage
+LIGHTRAG_VECTOR_STORAGE=PGVectorStorage
+LIGHTRAG_DOC_STATUS_STORAGE=PGDocStatusStorage
+LIGHTRAG_GRAPH_STORAGE=NetworkXStorage
+
+# PostgreSQL Configuration
+POSTGRES_HOST=postgres
+POSTGRES_PORT=5432
+POSTGRES_USER=lightrag_user
+POSTGRES_PASSWORD=lightrag_pass
+POSTGRES_DATABASE=lightrag
+POSTGRES_MAX_CONNECTIONS=12
+
+# LightRAG Processing Configuration
+ENABLE_LLM_CACHE=true
+ENABLE_LLM_CACHE_FOR_EXTRACT=true
+TIMEOUT=240
+TEMPERATURE=0
+MAX_ASYNC=4
+MAX_TOKENS=32768
+CHUNK_SIZE=1200
+CHUNK_OVERLAP_SIZE=100
+TOP_K=60
+
+### ====================================================================================
+
+
+# OLLAMA_EMULATING_MODEL_TAG=latest
 # WORKERS=2
 # CORS_ORIGINS=http://localhost:3000,http://localhost:8080
 
@@ -53,7 +103,7 @@ OLLAMA_EMULATING_MODEL_TAG=latest
 
 ### Entity and ralation summarization configuration
 ### Language: English, Chinese, French, German ...
-SUMMARY_LANGUAGE=English
+# SUMMARY_LANGUAGE=English
 ### Number of duplicated entities/edges to trigger LLM re-summary on merge ( at least 3 is recommented)
 # FORCE_LLM_SUMMARY_ON_MERGE=6
 ### Max tokens for entity/relations description after merge
@@ -66,34 +116,34 @@ SUMMARY_LANGUAGE=English
 # CHUNK_OVERLAP_SIZE=100
 
 ### LLM Configuration
-ENABLE_LLM_CACHE=true
-ENABLE_LLM_CACHE_FOR_EXTRACT=true
+# ENABLE_LLM_CACHE=true
+# ENABLE_LLM_CACHE_FOR_EXTRACT=true
 ### Time out in seconds for LLM, None for infinite timeout
-TIMEOUT=240
+# TIMEOUT=240
 ### Some models like o1-mini require temperature to be set to 1
-TEMPERATURE=0
+# TEMPERATURE=0
 ### Max concurrency requests of LLM
-MAX_ASYNC=4
+# MAX_ASYNC=4
 ### MAX_TOKENS: max tokens send to LLM for entity relation summaries (less than context size of the model)
 ### MAX_TOKENS: set as num_ctx option for Ollama by API Server
-MAX_TOKENS=32768
+# MAX_TOKENS=32768
 ### LLM Binding type: openai, ollama, lollms, azure_openai
-LLM_BINDING=openai
-LLM_MODEL=gpt-4o
-LLM_BINDING_HOST=https://api.openai.com/v1
-LLM_BINDING_API_KEY=your_api_key
+# LLM_BINDING=openai
+# LLM_MODEL=gpt-4o
+# LLM_BINDING_HOST=https://api.openai.com/v1
+# LLM_BINDING_API_KEY=your_api_key
 ### Optional for Azure
 # AZURE_OPENAI_API_VERSION=2024-08-01-preview
 # AZURE_OPENAI_DEPLOYMENT=gpt-4o
 
 ### Embedding Configuration
 ### Embedding Binding type: openai, ollama, lollms, azure_openai
-EMBEDDING_BINDING=ollama
-EMBEDDING_MODEL=bge-m3:latest
-EMBEDDING_DIM=1024
-EMBEDDING_BINDING_API_KEY=your_api_key
+# EMBEDDING_BINDING=ollama
+# EMBEDDING_MODEL=bge-m3:latest
+# EMBEDDING_DIM=1024
+# EMBEDDING_BINDING_API_KEY=your_api_key
 # If the embedding service is deployed within the same Docker stack, use host.docker.internal instead of localhost
-EMBEDDING_BINDING_HOST=http://localhost:11434
+# EMBEDDING_BINDING_HOST=http://localhost:11434
 ### Num of chunks send to Embedding in single request
 # EMBEDDING_BATCH_NUM=32
 ### Max concurrency requests for Embedding
@@ -120,19 +170,19 @@ EMBEDDING_BINDING_HOST=http://localhost:11434
 # TIDB_WORKSPACE=default
 
 ### PostgreSQL Configuration
-POSTGRES_HOST=localhost
-POSTGRES_PORT=5432
-POSTGRES_USER=your_username
-POSTGRES_PASSWORD='your_password'
-POSTGRES_DATABASE=your_database
-POSTGRES_MAX_CONNECTIONS=12
+# POSTGRES_HOST=localhost
+# POSTGRES_PORT=5432
+# POSTGRES_USER=your_username
+# POSTGRES_PASSWORD='your_password'
+# POSTGRES_DATABASE=your_database
+# POSTGRES_MAX_CONNECTIONS=12
 ### separating all data from difference Lightrag instances(deprecating)
 # POSTGRES_WORKSPACE=default
 
 ### Neo4j Configuration
-NEO4J_URI=neo4j+s://xxxxxxxx.databases.neo4j.io
-NEO4J_USERNAME=neo4j
-NEO4J_PASSWORD='your_password'
+# NEO4J_URI=neo4j+s://xxxxxxxx.databases.neo4j.io
+# NEO4J_USERNAME=neo4j
+# NEO4J_PASSWORD='your_password'
 
 ### Independent AGM Configuration(not for AMG embedded in PostreSQL)
 # AGE_POSTGRES_DB=
@@ -146,21 +196,21 @@ NEO4J_PASSWORD='your_password'
 # AGE_GRAPH_NAME=lightrag
 
 ### MongoDB Configuration
-MONGO_URI=mongodb://root:root@localhost:27017/
-MONGO_DATABASE=LightRAG
+# MONGO_URI=mongodb://root:root@localhost:27017/
+# MONGO_DATABASE=LightRAG
 ### separating all data from difference Lightrag instances(deprecating)
 # MONGODB_GRAPH=false
 
 ### Milvus Configuration
-MILVUS_URI=http://localhost:19530
-MILVUS_DB_NAME=lightrag
+# MILVUS_URI=http://localhost:19530
+# MILVUS_DB_NAME=lightrag
 # MILVUS_USER=root
 # MILVUS_PASSWORD=your_password
 # MILVUS_TOKEN=your_token
 
 ### Qdrant
-QDRANT_URL=http://localhost:16333
+# QDRANT_URL=http://localhost:16333
 # QDRANT_API_KEY=your-api-key
 
 ### Redis
-REDIS_URI=redis://localhost:6379
+# REDIS_URI=redis://localhost:6379
diff --git a/.gitignore b/.gitignore
index a498b0f6..e96b5a11 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,8 +15,9 @@ rag_storage_test/
 .venv/
 env/
 venv/
-*.env*
-.env_example
+.env*
+!.env.template
+
 
 # Build / Distribution
 dist/
diff --git a/k8s-deploy/lightrag-minimal/values.yaml b/k8s-deploy/lightrag-minimal/values.yaml
index fcddc577..c50bd6b0 100644
--- a/k8s-deploy/lightrag-minimal/values.yaml
+++ b/k8s-deploy/lightrag-minimal/values.yaml
@@ -83,42 +83,54 @@ env:
   # Server configuration
   HOST: "0.0.0.0"
   PORT: "9621"
-  
+
   # Web UI configuration
-  WEBUI_TITLE: "Apolo Copilot - LightRAG"
+  WEBUI_TITLE: "LightRAG - Graph Knowledge Base"
   WEBUI_DESCRIPTION: "Simple and Fast Graph Based RAG System for Apolo Documentation"
-  
+
   # LLM configuration (OpenRouter)
   LLM_BINDING: "openai"
-  LLM_MODEL: "openai/o3-mini"
+  LLM_MODEL: "openai/gpt-4o"
   LLM_BINDING_HOST: "https://openrouter.ai/api/v1"
   # LLM_BINDING_API_KEY: Set via secret
-  
+  # OPENAI_API_KEY: Set via secret
+
   # Embedding configuration (Gemini)
   EMBEDDING_BINDING: "openai"
   EMBEDDING_MODEL: "gemini-embedding-001"
   EMBEDDING_DIM: "3072"
   EMBEDDING_BINDING_HOST: "https://generativelanguage.googleapis.com/v1beta/openai/"
   # EMBEDDING_BINDING_API_KEY: Set via secret
-  
+
   # Storage configuration - Minimal setup
   LIGHTRAG_KV_STORAGE: "PGKVStorage"
   LIGHTRAG_VECTOR_STORAGE: "PGVectorStorage"
   LIGHTRAG_DOC_STATUS_STORAGE: "PGDocStatusStorage"
-  LIGHTRAG_GRAPH_STORAGE: "NetworkXStorage"  # Local storage, no external DB needed
-  
+  LIGHTRAG_GRAPH_STORAGE: "NetworkXStorage" # Local storage, no external DB needed
+
   # PostgreSQL connection (internal service)
-  POSTGRES_HOST: "{{ include \"lightrag-minimal.fullname\" . }}-postgresql"
+  POSTGRES_HOST: '{{ include "lightrag-minimal.fullname" . }}-postgresql'
   POSTGRES_PORT: "5432"
   POSTGRES_USER: "lightrag_user"
   POSTGRES_DATABASE: "lightrag"
   POSTGRES_WORKSPACE: "default"
 
+  # LightRAG Processing Configuration
+  ENABLE_LLM_CACHE: true
+  ENABLE_LLM_CACHE_FOR_EXTRACT: true
+  TIMEOUT: 240
+  TEMPERATURE: 0
+  MAX_ASYNC: 4
+  MAX_TOKENS: 32768
+  CHUNK_SIZE: 1200
+  CHUNK_OVERLAP_SIZE: 100
+  TOP_K: 60
+
 # Secret configuration for API keys
 secrets:
   # Create a secret with your OpenAI API key
-  openaiApiKey: ""  # Set this or create manually
-  
+  openaiApiKey: "" # Set this or create manually
+
 # Node selector and affinity
 nodeSelector: {}
 tolerations: []
@@ -152,4 +164,4 @@ healthCheck:
   initialDelaySeconds: 60
   periodSeconds: 30
   timeoutSeconds: 10
-  failureThreshold: 5
\ No newline at end of file
+  failureThreshold: 5