From 48-Hour Hackathon Prototype to Venture-Backed Startup: The IBA Blueprint

import { Request, Response, NextFunction } from "express";
import { redisClient } from "../lib/redis";

export async function withIdempotency(req: Request, res: Response, next: NextFunction) {
  const idempotencyKey = req.header("X-Idempotency-Key");
  if (!idempotencyKey) {
    return res.status(400).json({ error: "Missing required X-Idempotency-Key header" });
  }

  const cacheKey = `idempotency:${idempotencyKey}`;
  const cachedResponse = await redisClient.get(cacheKey);

  if (cachedResponse) {
    const { status, body } = JSON.parse(cachedResponse);
    return res.status(status).json(body);
  }

  // Intercept response to store result
  const originalJson = res.json.bind(res);
  res.json = (body: any) => {
    if (res.statusCode >= 200 && res.statusCode < 300) {
      redisClient.setEx(cacheKey, 86400, JSON.stringify({ status: res.statusCode, body }));
    }
    return originalJson(body);
  };

  next();
}

### Pilot Partner Charter Summary
- **Partner Scope:** 20 seats across Operations & Compliance teams.
- **Success Criteria:**
  1. 99.5% uptime during business hours (08:00 - 18:00 EST).
  2. >35% reduction in manual data reconciliation hours per week.
  3. P95 API response times under 250ms on dataset sizes <= 10GB.
- **Commercial Conversion Clause:**
  - Upon achieving criteria above within 45 days, partner enters standard annual contract at $1,500/seat/year ($30,000 ARR baseline).