Higress Transformer vs Spring Cloud Gateway

application.yaml

# test reqeust:
# "http://<SCG-IP>:<Port>/response-headers?X-Test-Dedupe=1&X-Test-Dedupe=2&X-Test-Dedupe=3&X-Test-Dedupe=4&testKey=1&testKey=2&testKey=4&testKey=4" \
# -H 'X-Header-From: 1' -H 'X-Header-From: 2' -H 'X-Header-From: 3' -H 'X-Header-From: 4'

spring:
  application:
    name: scg
  cloud:
    nacos:
      discovery:
        server-addr: xxx.xxx.xxx.xxx:8848
    gateway:
      routes:
        - id: test_route
          uri: lb://httpbin-svc
          predicates:
            - Path=/**
          filters:
            - AddRequestHeader=X-Header-1, 1
            - AddRequestHeader=X-Header-2, 2
            - AddRequestHeader=X-Header-3, 3
            - AddRequestHeader=X-Header-4, 4
            - DedupeResponseHeader=X-Test-Dedupe, RETAIN_FIRST
            - MapRequestHeader=X-Header-From, X-Header-To
            - RemoveRequestParameter=testKey
server:
  port: 18085

transformer.yaml

# test request: 
# "http://<Higress-Gateway-IP>:<Port>/response-headers?X-Test-Dedupe=1&X-Test-Dedupe=2&X-Test-Dedupe=3&X-Test-Dedupe=4&testKey=1&testKey=2&testKey=4&testKey=4" \
# -H 'X-Header-From: 1' -H 'X-Header-From: 2' -H 'X-Header-From: 3' -H 'X-Header-From: 4'

type: request
rules:
- operate: remove
  querys:
  - key: testKey
- operate: add
  headers:
  - key: X-Header-1
    value: 1
  - key: X-Header-2
    value: 2
  - key: X-Header-3
    value: 3
  - key: X-Header-4
    value: 4
- operate: map
  headers:
  - key: X-Header-From
    value: X-Header-To
---
type: response
rules:
- operate: dedupe
  headers:
  - key: X-Test-Dedupe
    value: RETAIN_FIRST

watch-by-pid.sh

#!/bin/bash

PID=$1
FILE_NAME="result-$PID.csv"
echo "%CPU,%MEM,RES" > $FILE_NAME
for (( i = 0; i < 120; i++ )) do
    # The positions of %CPU, %MEM, and RES may be different, 
    # adjusted according to the actual situation.
    res=`top -n 1 -p $PID | awk '{ if (NR == 8) { printf "%.2f,%.2f,%.2f", $10, $11, $7 } }'`
    echo "$res" >> $FILE_NAME
    echo "$res"
    sleep 1
done