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Disable content compression of HTML/etc by default due to memory leak between flask_socketio and flask and flask_compress.

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dgtlmoon
2026-02-15 08:19:29 +01:00
parent b6d3d63372
commit 501aa61e19
1 changed files with 10 additions and 6 deletions
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changedetectionio/flask_app.py
+10 -6
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@@ -70,13 +70,17 @@ socketio_server = None
# Enable CORS, especially useful for the Chrome extension to operate from anywhere
CORS(app)
# Super handy for compressing large BrowserSteps responses and others
# Flask-Compress handles HTTP compression, Socket.IO compression disabled to prevent memory leak
# Flask-Compress handles HTTP compression, Socket.IO compression disabled to prevent memory leak.
# There's also a bug between flask compress and socketio that causes some kind of slow memory leak
# It's better to use compression on your reverse proxy (nginx etc) instead.
if strtobool(os.getenv("FLASK_ENABLE_COMPRESSION")):
app.config['COMPRESS_MIN_SIZE'] = 2096
app.config['COMPRESS_MIMETYPES'] = ['text/html', 'text/css', 'text/javascript', 'application/json', 'application/javascript', 'image/svg+xml']
# Use gzip only - smaller memory footprint than zstd/brotli (4-8KB vs 200-500KB contexts)
app.config['COMPRESS_ALGORITHM'] = ['gzip']
compress = FlaskCompress()
app.config['COMPRESS_MIN_SIZE'] = 2096
app.config['COMPRESS_MIMETYPES'] = ['text/html', 'text/css', 'text/javascript', 'application/json', 'application/javascript', 'image/svg+xml']
# Use gzip only - smaller memory footprint than zstd/brotli (4-8KB vs 200-500KB contexts)
app.config['COMPRESS_ALGORITHM'] = ['gzip']
compress.init_app(app)
app.config['TEMPLATES_AUTO_RELOAD'] = False