From af54b30c6c083db24a4e4a5f618eff46d6b0788e Mon Sep 17 00:00:00 2001
From: Samuel Enocsson <samuel.enocsson@consid.se>
Date: Tue, 12 Aug 2025 16:34:36 +0200
Subject: [PATCH] Add comprehensive caching for performance optimization
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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- Cache predicted rating calculations (24 hour duration)
- Cache rating history data to avoid repeated scraping
- Implement separate cache keys for different data types
- Add cache hit logging for monitoring effectiveness
- Update PDGA numbers list with additional players
- Significantly improve performance for repeat visitors
- Reduce load on PDGA servers with intelligent caching

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
---
 pdga-numbers.txt |  3 ++-
 server.js        | 39 ++++++++++++++++++++++++++++++++++++++-
 2 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/pdga-numbers.txt b/pdga-numbers.txt
index 2eaed08..567898b 100644
--- a/pdga-numbers.txt
+++ b/pdga-numbers.txt
@@ -5,4 +5,5 @@
 176006
 201220
 288059
-242229
\ No newline at end of file
+242229
+155816
\ No newline at end of file
diff --git a/server.js b/server.js
index 3813a12..2eee101 100644
--- a/server.js
+++ b/server.js
@@ -511,11 +511,29 @@ function parseRatingHistory(html) {
 app.get('/api/rating-history/:pdgaNumber', async (req, res) => {
   try {
     const { pdgaNumber } = req.params;
-    console.log(`Fetching rating history for PDGA ${pdgaNumber}...`);
+    const cacheKey = `history-${pdgaNumber}`;
+    const cached = cache.get(cacheKey);
     
+    // Check cache first (24 hour cache for rating history)
+    if (cached && Date.now() - cached.timestamp < CACHE_DURATION) {
+      console.log(`Using cached rating history for PDGA ${pdgaNumber}`);
+      res.json({ 
+        pdgaNumber: parseInt(pdgaNumber),
+        history: cached.data
+      });
+      return;
+    }
+    
+    console.log(`Fetching rating history for PDGA ${pdgaNumber}...`);
     const html = await fetchRatingHistory(pdgaNumber);
     const history = parseRatingHistory(html);
     
+    // Cache the result
+    cache.set(cacheKey, {
+      data: history,
+      timestamp: Date.now()
+    });
+    
     res.json({ 
       pdgaNumber: parseInt(pdgaNumber),
       history 
@@ -530,6 +548,19 @@ app.post('/api/predicted-rating/:pdgaNumber', async (req, res) => {
   let browser = null;
   try {
     const { pdgaNumber } = req.params;
+    const cacheKey = `predicted-${pdgaNumber}`;
+    const cached = cache.get(cacheKey);
+    
+    // Check cache first (24 hour cache for predicted ratings)
+    if (cached && Date.now() - cached.timestamp < CACHE_DURATION) {
+      console.log(`Using cached predicted rating for PDGA ${pdgaNumber}`);
+      res.json({ 
+        pdgaNumber: parseInt(pdgaNumber),
+        predictedRating: cached.data
+      });
+      return;
+    }
+    
     browser = await puppeteer.launch({ 
       headless: "new",
       args: [
@@ -549,6 +580,12 @@ app.post('/api/predicted-rating/:pdgaNumber', async (req, res) => {
     await browser.close();
     browser = null;
     
+    // Cache the result
+    cache.set(cacheKey, {
+      data: predictedRating,
+      timestamp: Date.now()
+    });
+    
     res.json({ 
       pdgaNumber: parseInt(pdgaNumber),
       predictedRating