feat(db): reuse connections for 5 minutes

fiesta/fiesta/settings/__init__.py

@@ -72,7 +72,11 @@ class Production(
     @property
     def DATABASES(self):
         return {
-            "default": dj_database_url.parse(self.DATABASE_URL),
+            "default": dj_database_url.parse(
+                self.DATABASE_URL,
+                conn_max_age=self.DATABASE_CONN_MAX_AGE,
+                conn_health_checks=self.DATABASE_CONN_HEALTH_CHECKS,
+            ),
             "wiki": DatabaseConfigMixin.DATABASES["wiki"],
         }
 

fiesta/fiesta/settings/db.py

@@ -1,26 +1,35 @@
 from __future__ import annotations
 
+from configurations.values import Value
+
 
 class DatabaseConfigMixin:
-    DATABASES = {
-        "default": {
-            "ENGINE": "django.db.backends.postgresql",
-            "HOST": "db",
-            "USER": "fiesta",
-            "NAME": "fiesta",
-            "PASSWORD": "fiesta",
-        },
-        "legacydb": {
-            "ENGINE": "django.db.backends.mysql",
-            "HOST": "legacydb",
-            "NAME": "fiesta",
-            # TODO: access to legacy db by standard user
-            "USER": "root",
-            "PASSWORD": "root",
-        },
-        "wiki": {
-            "ENGINE": "django.db.backends.sqlite3",
-            # TODO: pass from ENV
-            "NAME": "/usr/src/wiki/db/wiki.sqlite3",
-        },
-    }
+    DATABASE_CONN_MAX_AGE = Value(default=5 * 60)
+    DATABASE_CONN_HEALTH_CHECKS = Value(default=True)
+
+    @property
+    def DATABASES(self):
+        return {
+            "default": {
+                "ENGINE": "django.db.backends.postgresql",
+                "HOST": "db",
+                "USER": "fiesta",
+                "NAME": "fiesta",
+                "PASSWORD": "fiesta",
+                "CONN_MAX_AGE": self.DATABASE_CONN_MAX_AGE,
+                "CONN_HEALTH_CHECKS": self.DATABASE_CONN_HEALTH_CHECKS,
+            },
+            "legacydb": {
+                "ENGINE": "django.db.backends.mysql",
+                "HOST": "legacydb",
+                "NAME": "fiesta",
+                # TODO: access to legacy db by standard user
+                "USER": "root",
+                "PASSWORD": "root",
+            },
+            "wiki": {
+                "ENGINE": "django.db.backends.sqlite3",
+                # TODO: pass from ENV
+                "NAME": "/usr/src/wiki/db/wiki.sqlite3",
+            },
+        }