Enable connection pooling

crank/settings/prod.py

@@ -2,6 +2,7 @@
 # Licensed under the MIT License. See LICENSE file in the project root for full license information.
 import os
 import pymysql
+import multiprocessing
 from pathlib import Path
 
 pymysql.install_as_MySQLdb()
@@ -13,15 +14,21 @@
 SESSION_COOKIE_SECURE = True
 SESSION_COOKIE_HTTPONLY = True
 CSRF_COOKIE_SECURE = True
+CPU_COUNT = multiprocessing.cpu_count()
+
 DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.mysql',
         'NAME': os.environ.get('DB_NAME'),
         'HOST': os.environ.get('DB_HOST'),
         'PORT': os.environ.get('DB_PORT'),
         'USER': os.environ.get('DB_USER'),
-        'PASSWORD': os.environ.get('DB_PASS')
-#        'OPTIONS': {'ssl': {'ca': os.environ.get('MYSQL_ATTR_SSL_CA')}}
+        'PASSWORD': os.environ.get('DB_PASS'),
+        'CONN_MAX_AGE': 0,  # Use 0 for connection pooling
+        'OPTIONS': {
+            'MAX_CONNS': CPU_COUNT * 4,  # Maximum number of connections in the pool
+            'REUSE_CONNS': CPU_COUNT * 2,  # Number of connections to reuse
+        },
     }
 }
 ALLOWED_HOSTS = ['*']

requirements.txt

@@ -4,7 +4,7 @@ cffi==1.17.0rc1
 charset-normalizer==3.3.2
 click==8.1.7
 coverage==7.3.2
-cryptography==43.0.1
+cryptography==43.0.3
 defusedxml==0.7.1
 Deprecated==1.2.14
 distlib==0.3.8