Vectorless RAG
Hybrid BM25 + structured retrieval without vector databases
Structured architectural snapshot optimized for enterprise review and generative search synthesis.
Hybrid BM25 + structured retrieval replacing vector stores at 3× lower latency.
Hardened asynchronous microservice topology with end-to-end telemetry and deterministic isolation.
Faster p95: 3× • Vector DBs: 0 • Infra Savings: 70%
Zero Data Leakage / ISO 27001 Aligned
Executive Summary // Architecture Brief
PRODUCTION SPECIFICATIONA retrieval pipeline combining BM25 and structured Postgres retrieval that eliminates vector DB dependencies and cuts p95 latency by 3×.
Key Impact & Verified Metrics // 2026 Telemetry
LIVE PRODUCTION BENCHMARKSVectorless RAG - Deterministic Knowledge Retrieval Architecture
Production knowledge system bypassing vector database overhead through BM25 lexical inverted indexes, structured Knowledge Graphs, and deterministic token citation guarantees.
Vectorless RAG System Topology & Hybrid Inverted Index
Enterprise Knowledge EngineeringEnd-to-end architectural schema illustrating document chunking, BM25 token weighting, Knowledge Graph relation linking, and zero-hallucination citation enforcement.
Vectorless RAG - Architecture Topology
Live topology inspection, microservice mesh, and protocol specifications for Vectorless RAG.
Next.js 16 Edge Client
Global CDN distribution with server-side streaming hydration and sub-second TTFB.
YARP / Envoy Gateway
OAuth2/JWT token verification, mTLS encryption, rate limiting, and dynamic tenant routing.
SignalR WebSocket Hub
Bidirectional streaming for live telemetry, chat broadcast, and instant notifications backed by Redis.
C# .NET 9/10 Core Engine
High-throughput event sourcing with MediatR CQRS pipelines and compiled expression trees.
LangGraph AI Mesh
Stateful multi-agent execution with policy guards, token budget controllers, and tool routing.
vLLM Inference Cluster
Self-hosted Llama-3 & DeepSeek models with continuous batching and FP8 quantization.
Vectorless BM25 Engine
Zero vector database lock-in. SQLite FTS5 / Lucene BM25 index with reranking cross-encoder.
Apache Kafka / RabbitMQ
Log-based partitioned event streams for asynchronous auditing, notifications, and telemetry ingestion.
Redis 7.2 Cluster
Distributed cache with sub-millisecond lookups, distributed locks, and SignalR pub/sub backplane.
PostgreSQL Multi-Tenant DB
Strict tenant schema isolation with connection pooling (PgBouncer) and WAL archiving.
Next.js 16 Edge Client
SSR / Edge Worker
Architectural Specification
Global CDN distribution with server-side streaming hydration and sub-second TTFB.
Downstream Pipe Connectors
Verified Production Impact & Client Endorsements
Real feedback from engineering leaders, CTOs, and founders across 15+ years of production deployments.
“Vijay and the SHIVAM ITCS AI team didn't just execute the project - they elevated our entire platform. Their ability to architect complex multi-agent state machines, eliminate latency bottlenecks, enforce zero-hallucination guardrails, and create an intelligent multi-LLM orchestration layer was extraordinary. The final delivery was resilient, battle-tested, and far beyond expectations. One of the strongest AI systems engineering teams in the industry.”
Related Works & Architectures
Explore interconnected production systems, domain-specific implementations, and technical blueprints from our engineering portfolio.
Ready to Build Enterprise Vectorless RAG?
Consult directly with our principal AI architects to evaluate architecture feasibility, cost optimization paths, and implementation timelines.