Update app.py

app.py

@@ -1,9 +1,16 @@
 from flask import Flask, render_template, request, jsonify, Response
 import requests
 from bs4 import BeautifulSoup
+from flask_caching import Cache
 
 app = Flask(__name__)
 
+# Configure caching – here we use a simple in-memory cache.
+# In production you might use Redis or another robust backend.
+app.config['CACHE_TYPE'] = 'SimpleCache'
+app.config['CACHE_DEFAULT_TIMEOUT'] = 300  # Cache responses for 5 minutes
+cache = Cache(app)
+
 # Internal mapping of crops to pests (for the form)
 CROP_TO_PESTS = {
     "Sorgum": ["FallArmyWorm"],
@@ -29,7 +36,7 @@ CROP_MAPPING = {
     "Soybean": "2",
     "Sugarcane": "8",
     "Tur": "5",
-    "Sorgum": "6"  # Adjust if needed
+    "Sorgum": "6"
 }
 
 # Map our internal pest names to external page values per crop.
@@ -96,7 +103,7 @@ def index():
         # Build the external image URL (using HTTP)
         base_url = f"http://www.icar-crida.res.in:8080/naip/gisimages/{crop}/{year}/{pest}_"
         external_image_url = f"{base_url}{param}{week}.jpg"
-        # Instead of using the external HTTP URL directly, we build our proxy URL
+        # Build our proxy URL to avoid direct linking
         image_url = f"/proxy-image?url={external_image_url}"
 
     return render_template('index.html',
@@ -111,7 +118,9 @@ def index():
                            selected_param=param,
                            image_url=image_url)
 
+# Cache this route based on its query string.
 @app.route('/fetch_weeks')
+@cache.cached(timeout=300, query_string=True)
 def fetch_weeks():
     crop = request.args.get('crop', '')
     pest = request.args.get('pest', '')
@@ -140,15 +149,15 @@ def fetch_weeks():
         weeks = [str(i) for i in range(1, 53)]
     return jsonify({"weeks": weeks})
 
+# Cache the fetched image for a short duration to avoid repeated external calls.
 @app.route('/proxy-image')
+@cache.cached(timeout=300, query_string=True)
 def proxy_image():
-    # Get the external URL from the query parameter
     external_url = request.args.get('url')
     if not external_url:
         return "Missing URL", 400
 
     try:
-        # Fetch the image from the external server
         resp = requests.get(external_url, timeout=10)
         return Response(resp.content, mimetype=resp.headers.get('Content-Type', 'image/jpeg'))
     except Exception as e: