Chenjp commented on PR #760:
URL: https://github.com/apache/tomcat/pull/760#issuecomment-2408312003
Customize filter to skip remoteAddr obtain:
```java
package filters;
...
public class RateLimiterPerformanceFilter extends RateLimitFilter {
....
private Random random = new Random();
@Override
protected String parseQuotaIdentifier(ServletRequest request) {
return "192.168.0."+(random.nextInt(20) + 1);
}
}
```
Sets policy: `q=1000;w=4`
@isapir Runs tomcat standalone on my notebook, ab results as blow: ***no
significant throughout decrease.***
*************************************************************
--Without rate limiter protection:
ab -n 10000 -c 10
http://localhost:8080/examples/ratelimiter/None/bytecounter.html
Document Path: /examples/ratelimiter/None/bytecounter.html
Document Length: 1456 bytes
Concurrency Level: 10
Time taken for tests: 6.338 seconds
Complete requests: 10000
Failed requests: 0
Total transferred: 17300000 bytes
HTML transferred: 14560000 bytes
Requests per second: 1577.86 [#/sec] (mean)
Time per request: 6.338 [ms] (mean)
Time per request: 0.634 [ms] (mean, across all concurrent requests)
Transfer rate: 2665.72 [Kbytes/sec] received
*************************************************************
Protected by FastRateLimiter
ab -n 10000 -c 10
http://localhost:8080/examples/ratelimiter/Fast/bytecounter.html
Document Path: /examples/ratelimiter/Fast/bytecounter.html
Document Length: 1456 bytes
Concurrency Level: 10
Time taken for tests: 6.393 seconds
Complete requests: 10000
Failed requests: 0
Total transferred: 17300000 bytes
HTML transferred: 14560000 bytes
Requests per second: 1564.21 [#/sec] (mean)
Time per request: 6.393 [ms] (mean)
Time per request: 0.639 [ms] (mean, across all concurrent requests)
Transfer rate: 2642.66 [Kbytes/sec] received
*************************************************************
Protected by ExactRateLimiter
ab -n 10000 -c 10
http://localhost:8080/examples/ratelimiter/Exact/bytecounter.html
Document Path: /examples/ratelimiter/Exact/bytecounter.html
Document Length: 1456 bytes
Concurrency Level: 10
Time taken for tests: 6.464 seconds
Complete requests: 10000
Failed requests: 0
Total transferred: 17300000 bytes
HTML transferred: 14560000 bytes
Requests per second: 1547.12 [#/sec] (mean)
Time per request: 6.464 [ms] (mean)
Time per request: 0.646 [ms] (mean, across all concurrent requests)
Transfer rate: 2613.78 [Kbytes/sec] received
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