Error rate limiter
Prevents error flooding on high traffic production sites. Particularly useful to prevent clogging email servers etc. See [discussion](http://groups.google.com/group/django-developers/browse_thread/thread/1dabc9139dd750ca/1d86fdca23189a7d?lnk=gst&q=error#1d86fdca23189a7d) and [closed ticket](http://code.djangoproject.com/ticket/11565). Uses memcache if it can, or falls back to local, in-process memory where unavailable (down, etc). Tweak to your needs using setting ERROR_RATE_LIMIT (seconds). Requires Django 1.3+ or trunk r13981+
- error
- logging
- emails