Update .env.example

Author: aditya452007

.env.example

@@ -10,7 +10,11 @@ LOG_LEVEL=INFO  # DEBUG | INFO | WARNING | ERROR | CRITICAL
 # Neo4j Database
 # =============================================================================
 
+# URI Formats:
+# Local: bolt://localhost:7687
+# Cloud (Aura): neo4j+s://<instance-id>.databases.neo4j.io
 NEO4J_URI=bolt://localhost:7687
+
 NEO4J_USER=neo4j
 NEO4J_PASS=your_password_here
 NEO4J_DB=neo4j
@@ -26,6 +30,8 @@ NEO4J_CONNECTION_TIMEOUT=30
 
 # Provider: openai | ollama | sentence_transformer
 EMBEDDING_PROVIDER=ollama
+
+# Note: Dimension must match the specific model used (e.g., 1024 for mxbai, 384 for MiniLM, 1536 for OpenAI)
 EMBEDDING_DIMENSION=1024
 EMBEDDING_BATCH_SIZE=100
 EMBEDDING_CACHE_TTL=3600
@@ -41,25 +47,30 @@ OLLAMA_BASE_URL=http://localhost:11434
 OLLAMA_EMBEDDING_MODEL=mxbai-embed-large
 OLLAMA_TIMEOUT=120
 
-# Sentence Transformer Settings
+# Sentence Transformer Settings (Local CPU/GPU)
+# Common model: sentence-transformers/all-MiniLM-L6-v2 (Requires EMBEDDING_DIMENSION=384)
 SENTENCE_TRANSFORMER_MODEL=sentence-transformers/all-MiniLM-L6-v2
 SENTENCE_TRANSFORMER_DEVICE=cpu  # cpu | cuda | mps
 
 # =============================================================================
 # LLM Configuration (for Question Answering)
 # =============================================================================
 
-# Provider: ollama
-LLM_PROVIDER=ollama  
-
-# Ollama LLM Settings
-LLM_MODEL_OLLAMA=llama3.2
+# Provider: ollama | gemini
+LLM_PROVIDER=ollama
 
 # LLM General Settings
 LLM_TIMEOUT=120
 LLM_MAX_TOKENS=1000
 LLM_TEMPERATURE=0.7
 
+# Ollama LLM Settings
+LLM_MODEL_OLLAMA=llama3.2
+
+# Google Gemini Settings
+GEMINI_API_KEY=your_gemini_api_key_here
+LLM_MODEL_GEMINI=gemini-2.5-flash
+
 # =============================================================================
 # Vector Search Configuration
 # =============================================================================
@@ -121,4 +132,4 @@ FEATURE_EMBEDDINGS=true
 FEATURE_VECTOR_SEARCH=true
 FEATURE_HYBRID_SEARCH=true
 FEATURE_BATCH_PROCESSING=true
-FEATURE_CACHING=false
+FEATURE_CACHING=false