Flooded with 503 errors

[doodlemania2]

Got this email about 150 times over the course of 12 hours.

Bad Gateway: /proxy/identity_icon/151124427182507114/38631d1b32.png

Report at /proxy/identity_icon/151124427182507114/38631d1b32.png Bad Gateway: /proxy/identity_icon/151124427182507114/38631d1b32.png

Request Method: GET Request URL: http://url2836.thedoodleproject.net/ls/click?upn=E-2BIWnGoNaV1xc2v5aE-2B4G1L5stkGveZ0e23BUHk84xW3Q14-2BIZph5-2FvD-2Fa4itIBKIgU5GkZW9ga8psqUv7aprCcGHNxvd3ZC0VS4h-2FX4A7Y2ULOR1LxgbAmV2QMd7C8NNUwY_MTQKioXqYBjSf6sZsbopRxXOuEG0ZOkr5NI5G2u0JGufb2WY6QR-2BCDWo48AX3f9g0N6sMmgDtIJpKA2qENSg08h2HBTVIJFUb16Rx0Y41k9NSUyXdoHFIvuy0HampJVwXIGp-2FJHC9rMDgU20tJt2dK-2F5y0iWKnjnexs9Av09U6ZHEfHv6BzISMGVEk5PaGdprTKlZv4miW0c6mAXuEfv65riaqIxKDBtECegQu5LVLM-3D Django Version: 4.1.7 Python Executable: /usr/local/bin/python3 Python Version: 3.11.2 Python Path: ['/takahe', '/usr/local/bin', '/usr/local/lib/python311.zip', '/usr/local/lib/python3.11', '/usr/local/lib/python3.11/lib-dynload', '/usr/local/lib/python3.11/site-packages'] Server time: Sun, 19 Mar 2023 11:28:05 +0000 Installed Applications: ['django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'corsheaders', 'django_htmx', 'hatchway', 'core', 'activities', 'api', 'mediaproxy', 'stator', 'users'] Installed Middleware: ['core.middleware.SentryTaggingMiddleware', 'django.middleware.security.SecurityMiddleware', 'corsheaders.middleware.CorsMiddleware', 'whitenoise.middleware.WhiteNoiseMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', 'django_htmx.middleware.HtmxMiddleware', 'core.middleware.HeadersMiddleware', 'core.middleware.ConfigLoadingMiddleware', 'api.middleware.ApiTokenMiddleware', 'users.middleware.IdentityMiddleware']

Traceback (most recent call last): None

Raised during: mediaproxy.views.IdentityIconCacheView Request information: USER: [email protected]

GET: No GET data

POST: No POST data

FILES: No FILES data

COOKIES: csrftoken =
sessionid =

META: CSRF_COOKIE = HTTP_ACCEPT = 'image/avif,image/webp,/' HTTP_ACCEPT_ENCODING = 'gzip' HTTP_ACCEPT_LANGUAGE = 'en-US,en;q=0.5' HTTP_CDN_LOOP = 'cloudflare' HTTP_CF_CONNECTING_IP = '172.58.181.116' HTTP_CF_IPCOUNTRY = 'US' HTTP_CF_RAY = '7aa55eab7805e8f9-ORD' HTTP_CF_VISITOR = '{"scheme":"https"}' HTTP_CONNECTION = 'close' HTTP_COOKIE = HTTP_HOST = 'www.ourselves.space' HTTP_PRIORITY = 'u=4' HTTP_REFERER = 'http://url2836.thedoodleproject.net/ls/click?upn=E-2BIWnGoNaV1xc2v5aE-2B4G1L5stkGveZ0e23BUHk84xWBNkARpdeHp4QJJd83h-2FGSceMY_MTQKioXqYBjSf6sZsbopRxXOuEG0ZOkr5NI5G2u0JGufb2WY6QR-2BCDWo48AX3f9g0N6sMmgDtIJpKA2qENSg09JO3HT5qT7T5BQ9rFKUDYNKAikm0ZGIw8fwlUHtB34TLEap8qUmhp-2FRUhHTZ8AxEr-2FJ0a07NEI-2FTnZ84xG5-2BAYcEgZqMnCxpSEbMTLys-2Bw1iNpBu3AGabUcZAAltM-2FUK1RGbHV1clxZIgT-2F42z-2BUdo-3D HTTP_SEC_FETCH_DEST = 'image' HTTP_SEC_FETCH_MODE = 'no-cors' HTTP_SEC_FETCH_SITE = 'same-origin' HTTP_USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/111.0' HTTP_X_FORWARDED_FOR = '172.58.181.116, 172.70.130.208' HTTP_X_FORWARDED_PROTO = 'https' HTTP_X_FORWARDED_SCHEME = 'https' HTTP_X_REAL_IP = '172.70.130.208' PATH_INFO = '/proxy/identity_icon/151124427182507114/38631d1b32.png' QUERY_STRING = '' RAW_URI = '/proxy/identity_icon/151124427182507114/38631d1b32.png' REMOTE_ADDR = '172.20.10.128' REMOTE_PORT = '41644' REQUEST_METHOD = 'GET' SCRIPT_NAME = '' SERVER_NAME = '0.0.0.0' SERVER_PORT = '8000' SERVER_PROTOCOL = 'HTTP/1.1' SERVER_SOFTWARE = 'gunicorn/20.1.0' gunicorn.socket = <socket.socket fd=8, family=2, type=1, proto=0, laddr=('172.20.10.130', 8000), raddr=('172.20.10.128', 41644)> wsgi.errors = <gunicorn.http.wsgi.WSGIErrorsWrapper object at 0x7f9cc2aa75e0> wsgi.file_wrapper = <class 'gunicorn.http.wsgi.FileWrapper'> wsgi.input = <gunicorn.http.body.Body object at 0x7f9cc2d2e3d0> wsgi.input_terminated = True wsgi.multiprocess = True wsgi.multithread = False wsgi.run_once = False wsgi.url_scheme = 'http' wsgi.version = '(1, 0)'

Settings: Using settings module takahe.settings ABSOLUTE_URL_OVERRIDES = {} ADMINS = ALLOWED_HOSTS = [''] APPEND_SLASH = True AUTHENTICATION_BACKENDS = ['django.contrib.auth.backends.ModelBackend'] AUTH_PASSWORD_VALIDATORS =
AUTH_USER_MODEL = 'users.User' AUTO_ADMIN_EMAIL = '[email protected]' AWS_ACCESS_KEY_ID =
AWS_DEFAULT_ACL = 'public-read' AWS_QUERYSTRING_AUTH = False AWS_S3_CUSTOM_DOMAIN = None AWS_S3_ENDPOINT_URL = AWS_SECRET_ACCESS_KEY = AWS_STORAGE_BUCKET_NAME = '' BASE_DIR = PosixPath('/takahe') CACHES = {'default': {'BACKEND': 'django.core.cache.backends.memcached.PyMemcacheCache', 'LOCATION': 'cache'}} CACHE_MIDDLEWARE_ALIAS = 'default' CACHE_MIDDLEWARE_KEY_PREFIX =
CACHE_MIDDLEWARE_SECONDS = 600 CORS_ALLOW_CREDENTIALS = True CORS_ORIGIN_ALLOW_ALL = True CORS_ORIGIN_WHITELIST = [] CORS_PREFLIGHT_MAX_AGE = 604800 CSRF_COOKIE_AGE = 31449600 CSRF_COOKIE_DOMAIN = None CSRF_COOKIE_HTTPONLY = False CSRF_COOKIE_MASKED = False CSRF_COOKIE_NAME = 'csrftoken' CSRF_COOKIE_PATH = '/' CSRF_COOKIE_SAMESITE = 'Lax' CSRF_COOKIE_SECURE = False CSRF_FAILURE_VIEW = 'django.views.csrf.csrf_failure' CSRF_HEADER_NAME = 'HTTP_X_CSRFTOKEN' CSRF_TRUSTED_ORIGINS = [] CSRF_USE_SESSIONS = False DATABASES = {'default': {'ENGINE': 'django.db.backends.postgresql', 'HOST': '', 'PORT': , 'NAME': '', 'USER': '', 'PASSWORD': '', 'ATOMIC_REQUESTS': False, 'AUTOCOMMIT': True, 'CONN_MAX_AGE': 0, 'CONN_HEALTH_CHECKS': False, 'OPTIONS': {}, 'TIME_ZONE': None, 'TEST': {'CHARSET': None, 'COLLATION': None, 'MIGRATE': True, 'MIRROR': None, 'NAME': None}}} DATABASE_ROUTERS = [] DATA_UPLOAD_MAX_MEMORY_SIZE = 2621440 DATA_UPLOAD_MAX_NUMBER_FIELDS = 1000 DATA_UPLOAD_MAX_NUMBER_FILES = 100 DATETIME_FORMAT = 'N j, Y, P' DATETIME_INPUT_FORMATS = ['%Y-%m-%d %H:%M:%S', '%Y-%m-%d %H:%M:%S.%f', '%Y-%m-%d %H:%M', '%m/%d/%Y %H:%M:%S', '%m/%d/%Y %H:%M:%S.%f', '%m/%d/%Y %H:%M', '%m/%d/%y %H:%M:%S', '%m/%d/%y %H:%M:%S.%f', '%m/%d/%y %H:%M'] DATE_FORMAT = 'N j, Y' DATE_INPUT_FORMATS = ['%Y-%m-%d', '%m/%d/%Y', '%m/%d/%y', '%b %d %Y', '%b %d, %Y', '%d %b %Y', '%d %b, %Y', '%B %d %Y', '%B %d, %Y', '%d %B %Y', '%d %B, %Y'] DEBUG = False DEBUG_PROPAGATE_EXCEPTIONS = False DECIMAL_SEPARATOR = '.' DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField' DEFAULT_CHARSET = 'utf-8' DEFAULT_EXCEPTION_REPORTER = 'django.views.debug.ExceptionReporter' DEFAULT_EXCEPTION_REPORTER_FILTER = 'django.views.debug.SafeExceptionReporterFilter' DEFAULT_FILE_STORAGE = 'core.uploads.TakaheS3Storage' DEFAULT_FROM_EMAIL = 'webmaster@localhost' DEFAULT_INDEX_TABLESPACE = '' DEFAULT_TABLESPACE = '' DISALLOWED_USER_AGENTS = [] EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend' EMAIL_HOST = EMAIL_HOST_PASSWORD = '' EMAIL_HOST_USER = '' EMAIL_PORT = 587 EMAIL_SSL_CERTFILE = None EMAIL_SSL_KEYFILE = '' EMAIL_SUBJECT_PREFIX = '[Django] ' EMAIL_TIMEOUT = None EMAIL_USE_LOCALTIME = False EMAIL_USE_SSL = False EMAIL_USE_TLS = True FILE_UPLOAD_DIRECTORY_PERMISSIONS = None FILE_UPLOAD_HANDLERS = ['django.core.files.uploadhandler.MemoryFileUploadHandler', 'django.core.files.uploadhandler.TemporaryFileUploadHandler'] FILE_UPLOAD_MAX_MEMORY_SIZE = 2621440 FILE_UPLOAD_PERMISSIONS = 420 FILE_UPLOAD_TEMP_DIR = None FIRST_DAY_OF_WEEK = 0 FIXTURE_DIRS = [] FORCE_SCRIPT_NAME = None FORMAT_MODULE_PATH = None FORM_RENDERER = 'django.forms.renderers.DjangoTemplates' IGNORABLE_404_URLS = [] INSTALLED_APPS = ['django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'corsheaders', 'django_htmx', 'hatchway', 'core', 'activities', 'api', 'mediaproxy', 'stator', 'users'] INTERNAL_IPS = [] JSONLD_MAX_SIZE = 51200 LANGUAGES = [('af', 'Afrikaans'), ('ar', 'Arabic'), ('ar-dz', 'Algerian Arabic'), ('ast', 'Asturian'), ('az', 'Azerbaijani'), ('bg', 'Bulgarian'), ('be', 'Belarusian'), ('bn', 'Bengali'), ('br', 'Breton'), ('bs', 'Bosnian'), ('ca', 'Catalan'), ('cs', 'Czech'), ('cy', 'Welsh'), ('da', 'Danish'), ('de', 'German'), ('dsb', 'Lower Sorbian'), ('el', 'Greek'), ('en', 'English'), ('en-au', 'Australian English'), ('en-gb', 'British English'), ('eo', 'Esperanto'), ('es', 'Spanish'), ('es-ar', 'Argentinian Spanish'), ('es-co', 'Colombian Spanish'), ('es-mx', 'Mexican Spanish'), ('es-ni', 'Nicaraguan Spanish'), ('es-ve', 'Venezuelan Spanish'), ('et', 'Estonian'), ('eu', 'Basque'), ('fa', 'Persian'), ('fi', 'Finnish'), ('fr', 'French'), ('fy', 'Frisian'), ('ga', 'Irish'), ('gd', 'Scottish Gaelic'), ('gl', 'Galician'), ('he', 'Hebrew'), ('hi', 'Hindi'), ('hr', 'Croatian'), ('hsb', 'Upper Sorbian'), ('hu', 'Hungarian'), ('hy', 'Armenian'), ('ia', 'Interlingua'), ('id', 'Indonesian'), ('ig', 'Igbo'), ('io', 'Ido'), ('is', 'Icelandic'), ('it', 'Italian'), ('ja', 'Japanese'), ('ka', 'Georgian'), ('kab', 'Kabyle'), ('kk', 'Kazakh'), ('km', 'Khmer'), ('kn', 'Kannada'), ('ko', 'Korean'), ('ky', 'Kyrgyz'), ('lb', 'Luxembourgish'), ('lt', 'Lithuanian'), ('lv', 'Latvian'), ('mk', 'Macedonian'), ('ml', 'Malayalam'), ('mn', 'Mongolian'), ('mr', 'Marathi'), ('ms', 'Malay'), ('my', 'Burmese'), ('nb', 'Norwegian Bokmål'), ('ne', 'Nepali'), ('nl', 'Dutch'), ('nn', 'Norwegian Nynorsk'), ('os', 'Ossetic'), ('pa', 'Punjabi'), ('pl', 'Polish'), ('pt', 'Portuguese'), ('pt-br', 'Brazilian Portuguese'), ('ro', 'Romanian'), ('ru', 'Russian'), ('sk', 'Slovak'), ('sl', 'Slovenian'), ('sq', 'Albanian'), ('sr', 'Serbian'), ('sr-latn', 'Serbian Latin'), ('sv', 'Swedish'), ('sw', 'Swahili'), ('ta', 'Tamil'), ('te', 'Telugu'), ('tg', 'Tajik'), ('th', 'Thai'), ('tk', 'Turkmen'), ('tr', 'Turkish'), ('tt', 'Tatar'), ('udm', 'Udmurt'), ('uk', 'Ukrainian'), ('ur', 'Urdu'), ('uz', 'Uzbek'), ('vi', 'Vietnamese'), ('zh-hans', 'Simplified Chinese'), ('zh-hant', 'Traditional Chinese')] LANGUAGES_BIDI = ['he', 'ar', 'ar-dz', 'fa', 'ur'] LANGUAGE_CODE = 'en-us' LANGUAGE_COOKIE_AGE = None LANGUAGE_COOKIE_DOMAIN = None LANGUAGE_COOKIE_HTTPONLY = False LANGUAGE_COOKIE_NAME = 'django_language' LANGUAGE_COOKIE_PATH = '/' LANGUAGE_COOKIE_SAMESITE = None LANGUAGE_COOKIE_SECURE = False LOCALE_PATHS = [] LOGGING = {} LOGGING_CONFIG = 'logging.config.dictConfig' LOGIN_REDIRECT_URL = '/' LOGIN_URL = '/auth/login/' LOGOUT_REDIRECT_URL = '/' LOGOUT_URL = '/auth/logout/' MAIN_DOMAIN = 'www.ourselves.space' MANAGERS = [] MEDIA_ROOT = '/takahe/media' MEDIA_URL = '/media/' MESSAGE_STORAGE = 'django.contrib.messages.storage.fallback.FallbackStorage' MIDDLEWARE = ['core.middleware.SentryTaggingMiddleware', 'django.middleware.security.SecurityMiddleware', 'corsheaders.middleware.CorsMiddleware', 'whitenoise.middleware.WhiteNoiseMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', 'django_htmx.middleware.HtmxMiddleware', 'core.middleware.HeadersMiddleware', 'core.middleware.ConfigLoadingMiddleware', 'api.middleware.ApiTokenMiddleware', 'users.middleware.IdentityMiddleware'] MIGRATION_MODULES = {} MONTH_DAY_FORMAT = 'F j' NUMBER_GROUPING = 0 PASSWORD_HASHERS = '' PASSWORD_RESET_TIMEOUT = '' PREPEND_WWW = False ROBOTS_TXT_DISALLOWED_USER_AGENTS = [] ROOT_URLCONF = 'takahe.urls' SECRET_KEY = '' SECRET_KEY_FALLBACKS = '' SECURE_CONTENT_TYPE_NOSNIFF = True SECURE_CROSS_ORIGIN_OPENER_POLICY = 'same-origin' SECURE_HSTS_INCLUDE_SUBDOMAINS = False SECURE_HSTS_PRELOAD = False SECURE_HSTS_SECONDS = 0 SECURE_PROXY_SSL_HEADER = "('HTTP_X_FORWARDED_PROTO', 'https')" SECURE_REDIRECT_EXEMPT = [] SECURE_REFERRER_POLICY = 'same-origin' SECURE_SSL_HOST = None SECURE_SSL_REDIRECT = False SERVER_EMAIL = '[email protected]' SESSION_CACHE_ALIAS = 'default' SESSION_COOKIE_AGE = 1209600 SESSION_COOKIE_DOMAIN = None SESSION_COOKIE_HTTPONLY = True SESSION_COOKIE_NAME = 'sessionid' SESSION_COOKIE_PATH = '/' SESSION_COOKIE_SAMESITE = 'Lax' SESSION_COOKIE_SECURE = False SESSION_ENGINE = 'django.contrib.sessions.backends.signed_cookies' SESSION_EXPIRE_AT_BROWSER_CLOSE = False SESSION_FILE_PATH = None SESSION_SAVE_EVERY_REQUEST = False SESSION_SERIALIZER = 'django.contrib.sessions.serializers.JSONSerializer' SETTINGS_MODULE = 'takahe.settings' SETUP = Settings(DATABASE_SERVER=None, ENVIRONMENT='development', DEBUG=False, DEBUG_TOOLBAR=False, LOCAL_SETTINGS=False, SECRET_KEY= STATOR_TOKEN=, ALLOWED_HOSTS=[''], CORS_HOSTS=[], CSRF_HOSTS=[], USE_PROXY_HEADERS=True, SENTRY_DSN=None, SENTRY_SAMPLE_RATE=1.0, SENTRY_TRACES_SAMPLE_RATE=0.01, SENTRY_CAPTURE_MESSAGES=False, SENTRY_EXPERIMENTAL_PROFILES_TRACES_SAMPLE_RATE=0.0, MAIN_DOMAIN='www.ourselves.space', EMAIL_SERVER=AnyUrl(, scheme='sendgrid', host=, host_type='int_domain'), EMAIL_FROM='[email protected]', AUTO_ADMIN_EMAIL='[email protected]', ERROR_EMAILS=['[email protected]'], ROBOTS_TXT_DISALLOWED_USER_AGENTS=[], MEDIA_URL='/media/', MEDIA_ROOT='/takahe/media', MEDIA_BACKEND=MediaBackendUrl(, scheme='s3', user='', password='', host='', tld='com', host_type='domain', path='/takahe'), MEDIA_BACKEND_S3_ACL='public-read', MEDIA_MAX_IMAGE_FILESIZE_MB=10, AVATAR_MAX_IMAGE_FILESIZE_KB=1000, EMOJI_MAX_IMAGE_FILESIZE_KB=200, REMOTE_TIMEOUT=5.0, SEARCH=True, CACHES_DEFAULT=CacheBackendUrl('pymemcache://cache', scheme='pymemcache', host='cache', host_type='int_domain'), STATOR_CONCURRENCY=50, STATOR_CONCURRENCY_PER_MODEL=15, PGHOST='', PGPORT=5432, PGNAME='', PGUSER='', PGPASSWORD='') SHORT_DATETIME_FORMAT = 'm/d/Y P' SHORT_DATE_FORMAT = 'm/d/Y' SIGNING_BACKEND = 'django.core.signing.TimestampSigner' SILENCED_SYSTEM_CHECKS = [] STATICFILES_DIRS = [PosixPath('/takahe/static')] STATICFILES_FINDERS = ['django.contrib.staticfiles.finders.FileSystemFinder', 'django.contrib.staticfiles.finders.AppDirectoriesFinder'] STATICFILES_STORAGE = 'django.contrib.staticfiles.storage.ManifestStaticFilesStorage' STATIC_ROOT = PosixPath('/takahe/static-collected') STATIC_URL = '/static/' STATOR_CONCURRENCY = 50 STATOR_CONCURRENCY_PER_MODEL = 15 STATOR_TOKEN = '********************' TAKAHE_ENV_FILE = '.env' TAKAHE_USER_AGENT = 'python-httpx/0.23.3 (Takahe/0.8.0; +http://url2836.thedoodleproject.net/ls/click?upn=E-2BIWnGoNaV1xc2v5aE-2B4G1L5stkGveZ0e23BUHk84xUy2Qr7xxtkflLnE0rcuMvrjohJ_MTQKioXqYBjSf6sZsbopRxXOuEG0ZOkr5NI5G2u0JGufb2WY6QR-2BCDWo48AX3f9g0N6sMmgDtIJpKA2qENSg05URespjcJrh3UpNC9kcXCGFvzybxERJTX6GTNQhJ-2BOQu9ufsf-2FWbQBte-2FdK53I3yy47TRZw7s7s3VnKymSmjhVJ6CstbhEbBQ993bzSRVlCCik3C0JlFrmETpAd4HJ7QkcxgP57RENA2KPVo7PrLjE-3D TEMPLATES = [{'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': [PosixPath('/takahe/templates')], 'APP_DIRS': True, 'OPTIONS': {'context_processors': ['django.template.context_processors.debug', 'django.template.context_processors.request', 'django.contrib.auth.context_processors.auth', 'django.contrib.messages.context_processors.messages', 'core.context.config_context', 'users.context.user_context']}}] TEST_NON_SERIALIZED_APPS = [] TEST_RUNNER = 'django.test.runner.DiscoverRunner' THOUSAND_SEPARATOR = ',' TIME_FORMAT = 'P' TIME_INPUT_FORMATS = ['%H:%M:%S', '%H:%M:%S.%f', '%H:%M'] TIME_ZONE = 'UTC' USE_DEPRECATED_PYTZ = False USE_I18N = True USE_L10N = True USE_THOUSAND_SEPARATOR = False USE_TZ = True USE_X_FORWARDED_HOST = False USE_X_FORWARDED_PORT = False WHITENOISE_MAX_AGE = 3600 WSGI_APPLICATION = 'takahe.wsgi.application' X_FRAME_OPTIONS = 'DENY' YEAR_MONTH_FORMAT = 'F Y'

[andrewgodwin]

Yeah, this is just the other end returning a status code and us not correctly absorbing and ignoring it (as you mentioned on Discord, probably the other Mastodon server). I'll leave this open and say the fix will be to just ignore remote server errors in these cases.

[uda]

What is the desired behavior in this case, a default image or a separate failure image? do we want different behavior based on different responses (4xx vs 5xx)?

[andrewgodwin]

We should probably just forward the failure code to the client - they should be expecting to deal with it, and it prevents us giving them something wrong to put in their cache.

[doodlemania2]

I think this is right, but it might also be advisable to send this to logfile or errlog instead of forcing errors through email. That might help detect patterns?

[andrewgodwin]

Yeah, it needs to somehow circumvent both the email and the sentry integration if it's enabled. These aren't errors that can be handled, so it does not make sense to alert on them.