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My Flask application has a simple feature with a textarea where you input HTML and clicking on a button will strip all the HTML tags and return the text inside the HTML into another textarea, say Text.
When I run my application with:
app.run(debug=True, host='0.0.0.0', port='8000')
it works very fast and smooth. But when I run it with gunicorn like this:
gunicorn -w 3 -b 0.0.0.0:8000 --log-file=- myapp.app:app
after I click the button 'HtmlToText' it takes too much time to return the text value and the larger the HTML the longest it takes.
Context:
The button is a simple JQuery function that does a GET request to 0.0.0.0:8000/htmltotext, that view get's the HTML as a querystring parameter /htmltotext?html=<head>Hi</head> and returns a JSON {text: "Hi"}
What would be the reason for gunicorn being so slow in this issue ?
499
So, what was happening here is that gunicorn had this issue:
Bad Request
Request Line is too large (7385 > 4094)
Since the request was too large it was never happening.
The fix:
gunicorn --limit-request-line 0
0 means unlimited.
188
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