feat: add some caching

Signed-off-by: Ameya Shenoy <shenoy.ameya@gmail.com>

backend/foldbank/api.py

@@ -4,6 +4,8 @@ from random import randrange
 
 from django.conf import settings
 from django.contrib.auth import get_user_model
+from django.utils.decorators import method_decorator
+from django.views.decorators.cache import cache_page
 from drf_yasg import openapi
 from drf_yasg.utils import swagger_auto_schema
 from foldbank.models import Account, RecurringPayment, Transaction, User
@@ -131,6 +133,7 @@ class TransactionsAPI(generics.ListAPIView):
         },
         tags=["Transactions"],
     )
+    @method_decorator(cache_page(60 * 60 * 2))
     def get(self, request):
         qs = []
 
@@ -190,6 +193,7 @@ class AccountsAPI(generics.ListAPIView):
         },
         tags=["Accounts"],
     )
+    @method_decorator(cache_page(60 * 60 * 2))
     def get(self, request):
         qs = []
 
@@ -240,8 +244,9 @@ class UpcomingRecurringPaymentAPI(generics.ListAPIView):
             },
         )
 
-
-    success_response = openapi.Response("Success Response", UpcomingRecurringPaymentOutputSerializer)
+    success_response = openapi.Response(
+        "Success Response", UpcomingRecurringPaymentOutputSerializer
+    )
 
     @swagger_auto_schema(
         operation_summary="Recurring Payments List",
@@ -250,6 +255,7 @@ class UpcomingRecurringPaymentAPI(generics.ListAPIView):
         },
         tags=["Recurring Payments"],
     )
+    @method_decorator(cache_page(60 * 60 * 2))
     def get(self, request):
         qs = []