Make panels cache size configurable.

3 files changed, 6 insertions, 2 deletions

diff --git a/debug_toolbar/toolbar/loader.py b/debug_toolbar/toolbar/loader.py
index 870eec3..f9262f8 100644
--- a/debug_toolbar/toolbar/loader.py
+++ b/debug_toolbar/toolbar/loader.py
@@ -100,7 +100,6 @@ def load_panel_classes():
 
 
 toolbar_counter = 0
-toolbar_maxsize = 10            # keep data for the last 10 requests
 toolbar_results = SortedDict()
 
 
@@ -108,7 +107,7 @@ def save_toolbar(toolbar):
     global toolbar_counter, toolbar_results
     toolbar_counter += 1
     toolbar_results[toolbar_counter] = toolbar
-    for _ in range(len(toolbar_results) - toolbar_maxsize):
+    for _ in range(len(toolbar_results) - CONFIG['RESULTS_CACHE_SIZE']):
         # When we drop support for Python 2.6 and switch to
         # collections.OrderedDict, use popitem(last=False).
         del toolbar_results[toolbar_results.keyOrder[0]]
diff --git a/debug_toolbar/utils/settings.py b/debug_toolbar/utils/settings.py
index af9821f..12dc231 100644
--- a/debug_toolbar/utils/settings.py
+++ b/debug_toolbar/utils/settings.py
@@ -20,6 +20,7 @@ CONFIG_DEFAULTS = {
     ),
     'ROOT_TAG_ATTRS': '',
     'SQL_WARNING_THRESHOLD': 500,   # milliseconds
+    'RESULTS_CACHE_SIZE': 10,
 }
 
 
diff --git a/docs/configuration.rst b/docs/configuration.rst
index 310482e..a035727 100644
--- a/docs/configuration.rst
+++ b/docs/configuration.rst
@@ -106,3 +106,7 @@ The debug toolbar has two settings that can be set in ``settings.py``.
            'ENABLE_STACKTRACES': True,
            'HIDDEN_STACKTRACE_MODULES': ('gunicorn', 'newrelic'),
        }
+
+   * ``RESULTS_CACHE_SIZE``
+
+     The toolbar keeps up to this many results in memory. Defaults to 10.