NLP Production

RAG DocumentAnalysis

Production-grade RAG system. Upload documents to query content using Gemini 2.5 Pro. No training required.

Gemini 2.5 Pro
Model
Google's latest multimodal
2M Tokens
Context Window
Full document analysis
PDF & DOCX
File Support
Native parsing
< 2s
Processing
Average extraction time

RAGPipeline Architecture

How we process and retrieve information without vector DBs (for single doc)

Ingestion Layer

Component 1

File parsing and normalization

  • pdf-parse for PDF extraction
  • mammoth for DOCX conversion
  • In-memory buffer processing
  • Whitespace normalization

Context Injection

Component 2

Dynamic prompt engineering

  • Full-text context window insertion
  • System instruction priming
  • Role-based history management
  • Token usage optimization

Gemini 2.5 Pro

Component 3

Reasoning engine

  • 2M token context window
  • Multimodal capabilities
  • Native reasoning on long text
  • Low-latency generation

Server Actions

Component 4

Secure transport layer

  • Direct client-to-cloud communication
  • Type-safe interfaces
  • Streaming response handling
  • Error boundary management

ProductionChallenges

Optimizing RAG for real-world use

File Format Variance

Multi-library parsing strategy

Reliable extraction from dirty PDFs

Context Limits

Gemini 2.5 Pro's extended window

No need for chunking/vector DB for <2M tokens

Latency

Vertex AI streaming API

Reduced round-trip overhead

Data Privacy

Ephemeral processing

Zero data retention on server

Processing WorkflowImplementation Details

Upload & Validation

Client-side checks

Technologies:

React Dropzone
MIME type validation
Size limits (10MB)

Text Extraction

Server-side parsing

Technologies:

Buffer conversion
pdf-parse
mammoth

Context Construction

Prompt assembly

Technologies:

Template interpolation
History formatting

LLM Inference

Answer generation

Technologies:

Vertex AI SDK
Gemini 2.5 Pro
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