scaraflow 0.1.2

Retrieval-first, deterministic RAG infrastructure

Scaraflow

Scaraflow is a retrieval-first RAG infrastructure designed for deterministic, production-grade Retrieval-Augmented Generation.

Scaraflow is not an agent framework, not a prompt playground, and not a demo SDK.
It focuses on one thing and does it rigorously:

Correct, explicit, and scalable retrieval for LLM systems

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Why Scaraflow

Most RAG frameworks prioritize orchestration and abstraction.
Scaraflow prioritizes retrieval correctness, predictability, and streaming readiness.

Design principles

• Retrieval before generation
• Explicit contracts over magic
• Deterministic behavior
• Low-variance latency
• Streaming-ready by design
• Infrastructure consistency across dev, notebooks, and production

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Architecture Overview

scaraflow/
├── scara-core        # strict contracts & invariants
├── scara-index       # vector store backends (Qdrant)
├── scara-rag         # deterministic RAG engine
├── scara-live        # streaming / temporal RAG (planned)
├── scara-graph       # graph-based RAG (planned)
└── scara-llm         # thin LLM adapters

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Installation

pip install scaraflow

Scaraflow requires a real vector database.
The recommended backend is Qdrant.

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Quick Start

Scaraflow supports three official setups.

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Option 1 — Docker (Local Qdrant)

docker run -p 6333:6333 qdrant/qdrant

from sentence_transformers import SentenceTransformer
from scara_index.qdrant_store import QdrantVectorStore
from scara_index.config import QdrantConfig
from scara_rag.engine import RAGEngine
from scara_rag.policies import RetrievalPolicy

model = SentenceTransformer("all-MiniLM-L6-v2")
embedder = type("E", (), {"embed": lambda t: model.encode(t).tolist()})

store = QdrantVectorStore(
    QdrantConfig(
        url="http://localhost:6333",
        collection="quickstart",
        vector_dim=384,
    )
)

rag = RAGEngine(
    embedder=embedder,
    store=store,
    llm=lambda prompt: "Demo answer",
)

texts = [
    "Scaraflow is a retrieval-first RAG system.",
    "Qdrant provides Rust-based HNSW indexing.",
]

vectors = model.encode(texts).tolist()

store.upsert(
    ids=[0, 1],
    vectors=vectors,
    metadata=[{"src": "quickstart"} for _ in texts],
)

response = rag.query(
    "What is Scaraflow?",
    policy=RetrievalPolicy(top_k=2),
)

print(response.answer)

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Option 2 — No Docker (In-Process Qdrant)

from qdrant_client import QdrantClient
from sentence_transformers import SentenceTransformer
from scara_index.qdrant_store import QdrantVectorStore
from scara_index.config import QdrantConfig
from scara_rag.engine import RAGEngine

client = QdrantClient(path="./qdrant_data")

store = QdrantVectorStore(
    QdrantConfig(
        collection="local_demo",
        vector_dim=384,
    ),
    client=client,
)

model = SentenceTransformer("all-MiniLM-L6-v2")
embedder = type("E", (), {"embed": lambda t: model.encode(t).tolist()})

rag = RAGEngine(
    embedder=embedder,
    store=store,
    llm=lambda _: "Demo answer",
)

store.upsert(
    ids=[0],
    vectors=[model.encode("Scaraflow works without Docker").tolist()],
    metadata=[{"mode": "local"}],
)

print(rag.query("How does Scaraflow run locally?").answer)

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Option 3 — Qdrant Cloud / Remote Qdrant

store = QdrantVectorStore(
    QdrantConfig(
        url="https://YOUR_QDRANT_ENDPOINT",
        collection="prod_collection",
        vector_dim=384,
    )
)

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Benchmarks

Scaraflow includes reproducible benchmarks measuring:

• embedding time
• indexing time
• query latency (avg / p95)
• variance

Example (CPU, 10k docs):

Embedding time: ~3.5s
Index time:     ~2.1s
Avg latency:    ~17ms
P95 latency:    ~20ms
Std dev:        low

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License

MIT License

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Author

Built and maintained by Ganesh (K. S. N. Ganesh)
Focus: retrieval systems, streaming RAG, and infrastructure-grade AI tooling.