add fast_save option to DbCache backend

1 files changed, 4 insertions, 2 deletions

diff --git a/requests_cache/backends/sqlite.py b/requests_cache/backends/sqlite.py
index 83bab79..bc0c8ee 100644
--- a/requests_cache/backends/sqlite.py
+++ b/requests_cache/backends/sqlite.py
@@ -16,11 +16,13 @@ class DbCache(BaseCache):
     Reading is fast, saving is a bit slower. It can store big amount of data
     with low memory usage.
     """
-    def __init__(self, location='cache', **options):
+    def __init__(self, location='cache', fast_save=False, **options):
         """
         :param location: database filename prefix (default: ``'cache'``)
+        :param fast_save: Speedup cache saving with possibility of data loss.
+                          See :ref:`backends.DbDict <backends_dbdict>` for more info
         """
         super(DbCache, self).__init__()
-        self.responses = DbPickleDict(location, 'responses')
+        self.responses = DbPickleDict(location, 'responses', fast_save=fast_save)
         self.url_map = DbDict(location, 'urls', self.responses)