[GitHub] [apisix] ShaoZeMing commented on issue #3865: bug: Routing priority matching bug

[GitBox <gi...@apache.org>]

ShaoZeMing commented on issue #3865:
URL: https://github.com/apache/apisix/issues/3865#issuecomment-842992553


   > @ShaoZeMing我列出了一个示例来解释原因。
   > 
   > 这里有三条路线（`A`，`B`和`C`），什么是他们的优先级？
   > 我认为您可以和我`A`<`B`和`A`<交谈`C`，这似乎很好。
   > 
   > 在`B`和之间`C`，谁的优先级最高？我认为要回答这个问题并不容易。
   > 机器此时无法准确确定谁的优先级更高。
   > 
   > ```
   > ### router A：only uri
   > {
   >     "uris":[ "/*" ]
   > }
   > 
   > ### router B ：uri + host
   > {
   >     "uris":["/*"],
   >     "hosts":["test-dev-1.apisix.xthktech.cn"]
   > }
   > 
   > ### router B ： uri + header
   > {
   >     "uris":["/*"],
   >     "vars":[
   >         [
   >             "http_app-name",
   >             "==",
   >             "test-header"
   >         ]
   >     ]
   > }
   > ```
   > 
   > 在APISIX中，当URI相同时，需要设置其他优先级。
   > 这是一个示例，然后我们知道：B> C> A。
   > 
   > ```
   > router A：only uri
   > {
   >     "uris":[ "/*" ],
   >     "priority": 0
   > }
   > 
   > router B ：uri + host
   > {
   >     "uris":["/*"],
   >     "hosts":["test-dev-1.apisix.xthktech.cn"],
   >     "priority": 2
   > }
   > 
   > router C ： uri + header
   > {
   >     "uris":["/*"],
   >     "vars":[
   >         [
   >             "http_app-name",
   >             "==",
   >             "test-header"
   >         ]
   >     ],
   >     "priority": 1
   > }
   > ```
   > 
   > _注意_：的`priority`最大值零。
   > 
   > https://github.com/apache/apisix/blob/master/docs/en/latest/admin-api.md#route
   > ![图像](https://user-images.githubusercontent.com/6814606/111908745-52de6980-8a95-11eb-9bd1-211aef035309.png)
   
   
   > @ShaoZeMing I listed an example to explain the reason.
   > 
   > Here are three routes(`A`, `B` and `C`), what is their priority?
   > I think you can talk to me `A` < `B`, and `A` < `C`, it seems fine.
   > 
   > Between `B` and `C`, who has the highest priority? I think it is not easy to reply to this question.
   > The machine cannot accurately determine who has the higher priority at this time.
   > 
   > ```
   > ### router A：only uri
   > {
   >     "uris":[ "/*" ]
   > }
   > 
   > ### router B ：uri + host
   > {
   >     "uris":["/*"],
   >     "hosts":["test-dev-1.apisix.xthktech.cn"]
   > }
   > 
   > ### router B ： uri + header
   > {
   >     "uris":["/*"],
   >     "vars":[
   >         [
   >             "http_app-name",
   >             "==",
   >             "test-header"
   >         ]
   >     ]
   > }
   > ```
   > 
   > In APISIX, when the URI is the same, additional priority needs to be set.
   > Here is an example, then we know that: B > C > A.
   > 
   > ```
   > router A：only uri
   > {
   >     "uris":[ "/*" ],
   >     "priority": 0
   > }
   > 
   > router B ：uri + host
   > {
   >     "uris":["/*"],
   >     "hosts":["test-dev-1.apisix.xthktech.cn"],
   >     "priority": 2
   > }
   > 
   > router C ： uri + header
   > {
   >     "uris":["/*"],
   >     "vars":[
   >         [
   >             "http_app-name",
   >             "==",
   >             "test-header"
   >         ]
   >     ],
   >     "priority": 1
   > }
   > ```
   > 
   > _note_: the default value of `priority` is zero.
   > 
   > https://github.com/apache/apisix/blob/master/docs/en/latest/admin-api.md#route
   > ![image](https://user-images.githubusercontent.com/6814606/111908745-52de6980-8a95-11eb-9bd1-211aef035309.png)
   
   Sorry, I'm here to bother you again. I did configure A and B according to the method in this document, but did not achieve the effect of B>A;


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