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<div class="section" id="module-paste.cascade">
<span id="paste-cascade-send-requests-to-multiple-applications-until-success"></span><h1><a class="reference internal" href="#module-paste.cascade"><tt class="xref py py-mod docutils literal"><span class="pre">paste.cascade</span></tt></a> – send requests to multiple applications until success<a class="headerlink" href="#module-paste.cascade" title="Permalink to this headline">¶</a></h1>
<p>Cascades through several applications, so long as applications
return <tt class="docutils literal"><span class="pre">404</span> <span class="pre">Not</span> <span class="pre">Found</span></tt>.</p>
<div class="section" id="module-contents">
<h2>Module Contents<a class="headerlink" href="#module-contents" title="Permalink to this headline">¶</a></h2>
<dl class="class">
<dt id="paste.cascade.Cascade">
<em class="property">class </em><tt class="descclassname">paste.cascade.</tt><tt class="descname">Cascade</tt><big>(</big><em>applications</em>, <em>catch=(404</em>, <em>)</em><big>)</big><a class="headerlink" href="#paste.cascade.Cascade" title="Permalink to this definition">¶</a></dt>
<dd><p>Passed a list of applications, <tt class="docutils literal"><span class="pre">Cascade</span></tt> will try each of them
in turn. If one returns a status code listed in <tt class="docutils literal"><span class="pre">catch</span></tt> (by
default just <tt class="docutils literal"><span class="pre">404</span> <span class="pre">Not</span> <span class="pre">Found</span></tt>) then the next application is
tried.</p>
<p>If all applications fail, then the last application’s failure
response is used.</p>
<p>Instances of this class are WSGI applications.</p>
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<dt id="paste.cascade.make_cascade">
<tt class="descclassname">paste.cascade.</tt><tt class="descname">make_cascade</tt><big>(</big><em>loader</em>, <em>global_conf</em>, <em>catch='404'</em>, <em>**local_conf</em><big>)</big><a class="headerlink" href="#paste.cascade.make_cascade" title="Permalink to this definition">¶</a></dt>
<dd><p>Entry point for Paste Deploy configuration</p>
<p>Expects configuration like:</p>
<div class="highlight-python"><pre>[composit:cascade]
use = egg:Paste#cascade
# all start with 'app' and are sorted alphabetically
app1 = foo
app2 = bar
...
catch = 404 500 ...</pre>
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<li><a class="reference internal" href="#"><tt class="docutils literal"><span class="pre">paste.cascade</span></tt> – send requests to multiple applications until success</a><ul>
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