# Debug Toolbar setup
INSTALLED_APPS += ['debug_toolbar']
MIDDLEWARE = [
'debug_toolbar.middleware.DebugToolbarMiddleware',
] + MIDDLEWARE
# Show toolbar only for localhost
INTERNAL_IPS = ['127.0.0.1', '::1']
# Custom callback for showing toolbar
def show_toolbar(request):
return DEBUG and request.META.get('REMOTE_ADDR') in INTERNAL_IPS
DEBUG_TOOLBAR_CONFIG = {
'SHOW_TOOLBAR_CALLBACK': show_toolbar,
'SHOW_TEMPLATE_CONTEXT': True,
}
DEBUG_TOOLBAR_PANELS = [
'debug_toolbar.panels.versions.VersionsPanel',
'debug_toolbar.panels.timer.TimerPanel',
'debug_toolbar.panels.settings.SettingsPanel',
'debug_toolbar.panels.headers.HeadersPanel',
'debug_toolbar.panels.request.RequestPanel',
'debug_toolbar.panels.sql.SQLPanel',
'debug_toolbar.panels.staticfiles.StaticFilesPanel',
'debug_toolbar.panels.templates.TemplatesPanel',
'debug_toolbar.panels.cache.CachePanel',
'debug_toolbar.panels.signals.SignalsPanel',
'debug_toolbar.panels.logging.LoggingPanel',
'debug_toolbar.panels.redirects.RedirectsPanel',
'debug_toolbar.panels.profiling.ProfilingPanel',
]
Django Debug Toolbar reveals query counts, cache hits, and template rendering time. I add it only in development settings. The toolbar shows all SQL queries which helps identify N+1 problems. I use the profiler panel to find slow code. The cache panel shows hit rates. For AJAX requests, I enable SHOW_TOOLBAR_CALLBACK to display toolbar selectively. I avoid running it in production—the performance overhead is significant. This tool is essential for Django performance optimization during development.
