AI Dev Tool: PostgreSQL pgvector Hybrid BM25 + Cosine Reranker Pipeline

1. The Production Bottleneck

We engineered this zero-bloat Python 3.12+ / AsyncIO blueprint to enforce bounded concurrency, deterministic exponential backoff with jitter, strict schema validation at the ingestion boundary, and structured JSON telemetry—ready to drop into production without weeks of plumbing.

2. Request & Execution Architecture

3. Production Benchmarks

"""
AI Dev Tool: PostgreSQL pgvector Hybrid BM25 + Cosine Reranker Pipeline.

This module implements a PostgreSQL pgvector hybrid BM25 + Cosine reranker pipeline.
It uses bounded concurrency to manage the number of concurrent requests to the database.
The module can be used from the command line with the following options:
    -h, --help            show this help message and exit
    --db-host DB_HOST     PostgreSQL database host
    --db-port DB_PORT     PostgreSQL database port
    --db-user DB_USER     PostgreSQL database user
    --db-password DB_PASSWORD     PostgreSQL database password
    --db-name DB_NAME     PostgreSQL database name
    --query QUERY         query to execute
    --k K                 number of results to return
    --concurrency CONCURRENCY     bounded concurrency

Example usage:
    python ai_dev_tool.py --db-host localhost --db-port 5432 --db-user user --db-password password --db-name database --query "query" --k 10 --concurrency 5
"""

import argparse
import dataclasses
import json
import logging
import random
import sys
from typing import List, Optional

5. Choose Your Access Tier

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6. Frequently Asked Engineering Questions

7. Related Production Blueprints