elli_cache

digraph RFC7232 {
  label="RFC 7232, Section 6. Precedence";
  // compound=true;

  step1 [label="If-Match"];
  sect3_1 [label="Section 3.1"];

  step2 [label="If-Unmodified-Since"];
  sect3_4 [label="Section 3.4"];

  step3 [label="If-None-Match"];

  step4 [label="If-Modified-Since"];

  step5 [label="Range ∧ If-Range"];

  206;
  304;
  412;
  Res;

  subgraph cluster1 {
    label="Step 1";
    step1 -> step3 [color=green];
    step1 -> sect3_1 [color=red];
    step1 -> step2 [style=dashed];
  }

  subgraph cluster2 {
    label="Step 2";
    step2 -> step3 [color=green, style=dashed];
    step2 -> sect3_4 [color=red];
  }

  subgraph cluster3 {
    label="Step 3";
    step3 -> step5 [color=green];
    step3 -> 304 [color=red, label="GET ∨ HEAD"];
    step3 -> 412 [color=red, label="_Method"];
    step3 -> step4 [style=dashed];
  }

  subgraph cluster4 {
    label="Step 4";
    step4 -> step5 [style=dashed, label="_Method"];
    step4 -> step5 [color=green, label="GET ∨ HEAD"];
    step4 -> 304 [color=red, label="GET ∨ HEAD"];
  }

  subgraph cluster5 {
    label="Step 5";
    step5 -> 206 [color=green];
    step5 -> Res [color=red, label="GET"];
    step5 -> Res [style=dashed, label="_Method"];
  }
}