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补充：ngx.req.get_headers与ngx.var.http_{header_name}的比较 #309

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Miss-you opened this issue Nov 23, 2020 · 0 comments
Open

补充：ngx.req.get_headers与ngx.var.http_{header_name}的比较 #309

Miss-you opened this issue Nov 23, 2020 · 0 comments

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@Miss-you
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ngx.req.get_headers 可以获取header信息
ngx.var.http_{header_name}也可以获取header信息，他们俩有什么异同呢？

  1. 性能上，ngx.var.http_{header_name}性能远远高于ngx.req.get_headers
  2. 获取的值上，ngx.req.get_headers可能有table值，ngx.var.http_{header_name}有多个同名header时只会获取其中一个
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@Miss-you