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        "author": "Robin Peters",
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        "description": "# Flask Server-Timing Header Extension\n\nA Flask extension to easily add the Server-Timing header to allow supported browsers to show backend performance metrics.\n\nFrom the [Mozilla Developer site](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Server-Timing):\n\n> The Server-Timing header communicates one or more metrics and descriptions for a given request-response cycle. It is used to surface any backend server timing metrics (e.g. database read/write, CPU time, file system access, etc.) in the developer tools in the user's browser\n\n\nThe Server-Timing specification is a [W3C draft](https://www.w3.org/TR/server-timing)\n\n## Installation\n\n```\npip install flask-server-timing\n```\n\nPython versions 2.7 and 3.x are supported with Flask from version 0.10.1.\n\n## Browser Support\n\nGenerally all newer, major browsers - excluding IE and Safari - support visualizing the Server-Timing header. For an up-to-date list with specific versions see the [Mozilla Developer](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Server-Timing#Browser_compatibility) site\n\n## Usage\n\n```python\nfrom flask import Flask\nimport time\n\n# Import extension\nfrom from server_timing import Timing\n\napp = Flask(__name__)\n\n# To initialize the extension simply pass the app to it. If the app is in debug\n# mode or the force_debug parameter is True an after-request handler will be added\n# to write the actual header.\nt = Timing(app, force_debug=True)\n\n\n@app.route(\"/examples\")\ndef examples():\n    # explicitly calling start and stop before and after - keys need to be identical\n    t.start('done and done')\n    time.sleep(0.3)\n    t.stop('done and done')\n\n    # context manager support to avoid having to call start and stop explicitly\n    with t.time('context'):\n        time.sleep(0.2)\n\n    # decorated with name being the key\n    named_decoration()\n    # decorated without name so the function is the key\n    unnamed_decoration()\n\n@t.timer(name='named')\ndef named_decoration():\n    time.sleep(0.4)\n\n@t.timer\ndef unnamed_decoration():\n    time.sleep(0.5)\n\n\napp.run(host=\"0.0.0.0\",port=8080)\n```\n\nThe `example/` directory also contains the following file showing how to time functions in other modules:\n\n```python\nimport time\n\n# before this file is imported make sure the extension has been initialized with the Flask app\nfrom server_timing import Timing as t\n\n\n@t.timer\ndef include():\n    time.sleep(0.1)\n```",
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