Sn0rt commented on issue #9226:
URL: https://github.com/apache/apisix/issues/9226#issuecomment-1498360938
## try to fix
### without proxy-cache
```diff
- proxy-mirror # priority: 1010
- - proxy-cache # priority: 1009
+ # - proxy-cache # priority: 1009
- proxy-rewrite # priority: 1008
```
```bash
$ curl http://127.0.0.1:9080/capital -X POST -d '{"country":"foo"}' -v
Note: Unnecessary use of -X or --request, POST is already inferred.
* Trying 127.0.0.1:9080...
* Connected to 127.0.0.1 (127.0.0.1) port 9080 (#0)
> POST /capital HTTP/1.1
> Host: 127.0.0.1:9080
> User-Agent: curl/7.88.1
> Accept: */*
> Content-Length: 17
> Content-Type: application/x-www-form-urlencoded
>
< HTTP/1.1 200 OK
< Content-Type: application/json; charset=utf-8
< Transfer-Encoding: chunked
< Connection: keep-alive
< Date: Wed, 05 Apr 2023 14:55:06 GMT
< Server: APISIX/3.2.0
<
* Connection #0 to host 127.0.0.1 left intact
{"result": "hello"}
$ curl http://127.0.0.1:9080/capital -X POST -d '{"country":"foo"}' -v
Note: Unnecessary use of -X or --request, POST is already inferred.
* Trying 127.0.0.1:9080...
* Connected to 127.0.0.1 (127.0.0.1) port 9080 (#0)
> POST /capital HTTP/1.1
> Host: 127.0.0.1:9080
> User-Agent: curl/7.88.1
> Accept: */*
> Content-Length: 17
> Content-Type: application/x-www-form-urlencoded
>
< HTTP/1.1 200 OK
< Content-Type: application/json; charset=utf-8
< Transfer-Encoding: chunked
< Connection: keep-alive
< Date: Wed, 05 Apr 2023 14:55:08 GMT
< Server: APISIX/3.2.0
<
* Connection #0 to host 127.0.0.1 left intact
{"result": "hello"}
```
### proxy-cache with low priority
```diff
- body-transformer # priority: 1080
- proxy-mirror # priority: 1010
- proxy-cache # priority: 1009
- proxy-rewrite # priority: 1008
```
```bash
$ curl http://127.0.0.1:9080/capital -X POST -d '{"country":"foo"}' -v
Note: Unnecessary use of -X or --request, POST is already inferred.
* Trying 127.0.0.1:9080...
* Connected to 127.0.0.1 (127.0.0.1) port 9080 (#0)
> POST /capital HTTP/1.1
> Host: 127.0.0.1:9080
> User-Agent: curl/7.88.1
> Accept: */*
> Content-Length: 17
> Content-Type: application/x-www-form-urlencoded
>
< HTTP/1.1 200 OK
< Content-Type: application/json; charset=utf-8
< Transfer-Encoding: chunked
< Connection: keep-alive
< Apisix-Cache-Status: MISS
< Date: Wed, 05 Apr 2023 14:56:59 GMT
< Server: APISIX/3.2.0
<
* Connection #0 to host 127.0.0.1 left intact
{"result": "hello"}
$ curl http://127.0.0.1:9080/capital -X POST -d '{"country":"foo"}' -v
Note: Unnecessary use of -X or --request, POST is already inferred.
* Trying 127.0.0.1:9080...
* Connected to 127.0.0.1 (127.0.0.1) port 9080 (#0)
> POST /capital HTTP/1.1
> Host: 127.0.0.1:9080
> User-Agent: curl/7.88.1
> Accept: */*
> Content-Length: 17
> Content-Type: application/x-www-form-urlencoded
>
< HTTP/1.1 200 OK
< Content-Type: application/json
< Transfer-Encoding: chunked
< Connection: keep-alive
< Server: APISIX/3.2.0
< Date: Wed, 05 Apr 2023 14:56:59 GMT
< Age: 1
< Apisix-Cache-Status: HIT
<
* Connection #0 to host 127.0.0.1 left intact
```
### proxy-cache with high priority
```diff
plugins: # plugin list (sorted by priority)
+ - proxy-cache # priority: 24000
- real-ip # priority: 23000
- ai # priority: 22900
- client-control # priority: 22000
```
```shell
$ curl http://127.0.0.1:9080/capital -X POST -d '{"country":"foo"}' -v
Note: Unnecessary use of -X or --request, POST is already inferred.
* Trying 127.0.0.1:9080...
* Connected to 127.0.0.1 (127.0.0.1) port 9080 (#0)
> POST /capital HTTP/1.1
> Host: 127.0.0.1:9080
> User-Agent: curl/7.88.1
> Accept: */*
> Content-Length: 17
> Content-Type: application/x-www-form-urlencoded
>
< HTTP/1.1 200 OK
< Content-Type: application/json; charset=utf-8
< Transfer-Encoding: chunked
< Connection: keep-alive
< Apisix-Cache-Status: MISS
< Date: Wed, 05 Apr 2023 14:58:42 GMT
< Server: APISIX/3.2.0
<
* Connection #0 to host 127.0.0.1 left intact
{"result": "hello"}
$ curl http://127.0.0.1:9080/capital -X POST -d '{"country":"foo"}' -v
Note: Unnecessary use of -X or --request, POST is already inferred.
* Trying 127.0.0.1:9080...
* Connected to 127.0.0.1 (127.0.0.1) port 9080 (#0)
> POST /capital HTTP/1.1
> Host: 127.0.0.1:9080
> User-Agent: curl/7.88.1
> Accept: */*
> Content-Length: 17
> Content-Type: application/x-www-form-urlencoded
>
< HTTP/1.1 200 OK
< Content-Type: application/json
< Transfer-Encoding: chunked
< Connection: keep-alive
< Date: Wed, 05 Apr 2023 14:58:42 GMT
< Server: APISIX/3.2.0
< Age: 1
< Apisix-Cache-Status: HIT
<
* Connection #0 to host 127.0.0.1 left intact
```
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