Session 7d: Audit fixes - rate limiting, error leak, parallel parlays, analyze cache, bundle analyzer

src/routes/analyze.js

@@ -1,8 +1,39 @@
 const express = require('express');
 const { analyzeProp } = require('../services/propAnalyzer');
+const { cacheGet, cacheSet } = require('../utils/redis');
+const { createRateLimit } = require('../middleware/rateLimit');
 
 const router = express.Router();
 
+// SEC-1 (Session 7d): /prop and /batch are public — both proxy to the
+// prop analyzer which makes upstream API calls. Cap to 10 requests per
+// IP per minute so a single bad actor can't burn analyzer credits.
+const analyzeLimit = createRateLimit({ windowMs: 60_000, max: 10 });
+router.use(analyzeLimit);
+
+// PERF-1 (Session 7d): cache analyzeProp results in Redis. Same prop hit
+// twice within 60s reuses the previous analysis instead of re-doing the
+// upstream chain. 60s is short enough that line moves still surface.
+const ANALYZE_TTL_SECONDS = 60;
+function analyzeCacheKey(prop) {
+  const sport = (prop.sport || 'nba').toLowerCase();
+  const player = String(prop.player || '').trim().toLowerCase();
+  const stat = String(prop.stat_type || '').trim().toLowerCase();
+  const line = Number(prop.line);
+  const direction = String(prop.direction || '').toLowerCase();
+  return `analyze:${sport}:${player}:${stat}:${line}:${direction}`;
+}
+async function cachedAnalyze(prop) {
+  const key = analyzeCacheKey(prop);
+  const cached = await cacheGet(key);
+  if (cached) return { ...cached, _cache: 'HIT' };
+  const result = await analyzeProp(prop);
+  // cacheSet swallows failures (degraded Redis) — analysis still flows
+  // even when the cache is down.
+  await cacheSet(key, result, ANALYZE_TTL_SECONDS);
+  return { ...result, _cache: 'MISS' };
+}
+
 const VALID_STAT_TYPES = new Set([
   'points', 'rebounds', 'assists', 'threes', 'blocks',
   'steals', 'pra', 'turnovers',
@@ -32,7 +63,7 @@ router.post('/prop', async (req, res) => {
   }
 
   try {
-    const result = await analyzeProp(req.body);
+    const result = await cachedAnalyze(req.body);
     return res.json(result);
   } catch (err) {
     if (err.response && err.response.status === 404) {
@@ -61,7 +92,7 @@ router.post('/batch', async (req, res) => {
     }
 
     try {
-      const result = await analyzeProp(prop);
+      const result = await cachedAnalyze(prop);
       results.push(result);
     } catch (err) {
       results.push({