django-scaler 0.2

内容

• Django Scaler
  • Installation
  • Overview
  • Usage
• Authors
• Changelog
  • 0.2
  • 0.1

Installation

1. 在python路径中安装或添加django-scaler。
2. 将scaler添加到INSTALLED_APPS设置中。
3. 将scaler.middleware.ScalerMiddleware添加到MIDDLEWARE_CLASSES设置的顶部。
4. 将（r“^scaler/”，include（'scaler.url'）添加到urlpatterns。

Overview

由于各种原因，服务器有时可能会过载。当那 碰巧你不想让昂贵的请求破坏你的整个网站。这个 站点必须将昂贵的请求重定向到“服务器忙”页，而服务器 处于加载状态，然后在加载后自动删除重定向 掉得够多了。

django-scaler用两种方式解决这种情况。首先，它知道 请求自行重定向。其次，可以指示它重新定向 n最昂贵的要求。它将响应时间数据存储在内存缓存中 使它能够做出这些决定。

Usage

粘贴自test_settings.py：

DJANGO_SCALER = {
    'server_busy_url_name': 'server-busy',

    # How many response times to consider for an URL. A small value means slow
    # response times are quickly acted upon, but it may be overly aggressive.
    # A large value means an URL must be slow for a number of requests before
    # it is acted upon. The default is 100.
    'trend_size': 10,

    # How much slower than average the trend must be before redirection kicks
    # in. The default is 4.0.
    'slow_threshold': 2.0,

    # How many seconds to keep redirecting an URL before serving normally. The
    # default is 60.
    'redirect_for': 10,

    # A function that returns how many of the slowest URLs must be redirected.
    # Depending on the site, data and load on the server this may be a large
    # number. This allows external processes to instruct the middleware to
    # redirect. The default is 0.
    'redirect_n_slowest_function': lambda: 0,

    # A function that returns what percentage of the slowest URLs must be
    # redirected. Depending on the site, data and load on the server this may
    # approach 100. The default is 0.
    'redirect_percentage_slowest_function': lambda: 0,

    # A function that returns a list of regexes. URLs matching the regexes are
    # redirected. Each regex is a simple string. Do not prefix with r''. The
    # default is an empty list.
    'redirect_regexes_function': lambda: [],
}

0.2

1. 用于显式重定向的regex url匹配。
2. 最慢显式重定向百分比。

0.1

1. 第一次释放。