|  | digraph G {
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							|  | 
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							|  |   node [style=filled, shape=box, fillcolor="#ffffcc", fontname=Sans];
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							|  |   edge [fontname="Sans"];
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							|  | 
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							|  |   browser [label="browser", shape=tab, fillcolor=aliceblue];
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							|  |   rp      [label="reverse proxy"];
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							|  |   static  [label="static files", shape=folder, href="url to configure static files", fillcolor=lightgray];
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							|  |   uwsgi   [label="uwsgi", shape=parallelogram href="https://docs.searxng.org/utils/searx.sh.html"]
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							|  |   redis     [label="redis DB", shape=cylinder];
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							|  |   searxng1  [label="SearXNG #1", fontcolor=blue3];
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							|  |   searxng2  [label="SearXNG #2", fontcolor=blue3];
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							|  |   searxng3  [label="SearXNG #3", fontcolor=blue3];
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							|  |   searxng4  [label="SearXNG #4", fontcolor=blue3];
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							|  | 
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							|  |   browser -> rp [label="HTTPS"]
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							|  | 
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							|  |   subgraph cluster_searxng {
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							|  |       label = "SearXNG instance" fontname=Sans;
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							|  |       bgcolor="#fafafa";
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							|  |       { rank=same; static rp };
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							|  |       rp -> static  [label="optional: reverse proxy serves static files", fillcolor=slategray, fontcolor=slategray];
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							|  |       rp -> uwsgi [label="http:// (tcp) or unix:// (socket)"];
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							|  |       uwsgi -> searxng1 -> redis;
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							|  |       uwsgi -> searxng2 -> redis;
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							|  |       uwsgi -> searxng3 -> redis;
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							|  |       uwsgi -> searxng4 -> redis;
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							|  |   }
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							|  | 
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							|  | }
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