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Apache requires very slow use after using ProxyPass

So, I am running Tomcat (8.0) for Apache (2.4) on Windows Server 2012 and using ProxyPass to go through all the traffic. Everything works fine, but whenever I do nothing for 60 seconds and then hit the server again, I get a delay of 8-20 seconds, for example, apache creates a new process to process the request.

My configuration is pretty much the default one that comes with Apache Haus, with the addition of a proxy file, which I believe is the culprit:

ProxyPass         /static/ !
ProxyPass         /  http://localhost:8088/
ProxyPassReverse  /  http://localhost:8088/

I added

/ static /!

to see if the same problem will occur when serving static files, and apparently this is the case. I also narrowed it down by commenting on all ProxyPass stuff, and checking my static file always loads quickly. Then I uncommented the ProxyPass stuff and only requested my static file and it always returned quickly again. But as soon as I hit the URL that takes me through the proxy server, wait a minute and then hit it again, something will go horribly wrong. Below is the output of the network monitor for two requests, the first of the static files is requested the second time after the delay 1 minute before , and the second after the proxy server was used twice with a delay between proxy requests.

3501   4:17:48 PM 10/21/2015   104.2752287   httpd.exe   HTTP   HTTP:Request, GET /static/index.html 
3502   4:17:48 PM 10/21/2015   104.2760830   httpd.exe   HTTP   HTTP:Response, HTTP/1.1, Status: Not modified, URL: /static/index.html

After (8 seconds to return):

24232   4:26:13 PM 10/21/2015   608.7355960   httpd.exe   HTTP   HTTP:Request, GET /static/index.html 
24775   4:26:20 PM 10/21/2015   616.0896861   httpd.exe   HTTP   HTTP:Response, HTTP/1.1, Status: Not modified, URL: /static/index.html

SynReTransmit , , , :

24226   4:26:13 PM 10/21/2015   608.7286692   httpd.exe   TCP   TCP:[SynReTransmit #24107]Flags=......S., SrcPort=61726, DstPort=HTTP(80), PayloadLen=0, Seq=1157444168, Ack=0, Win=8192 ( Negotiating scale factor 0x2 ) = 8192

, -, 60 , !

?

UPDATE: Apache, 2.4.12, 2.4.17 . keepalive, . apache dev, , , , apache:

http://marc.info/?l=apache-httpd-dev&m=144543644225945&w=2

+4
2

ProxyReceiveBufferSize:

# For increase throughput (bytes)
ProxyReceiveBufferSize 2048
0

httpd :

AcceptFilter http none 
AcceptFilter https none 
EnableSendfile Off 
EnableMMAP off

:

Listen 80

2 , , .

https://www.apachelounge.com/viewtopic.php?p=26601

0

Source: https://habr.com/ru/post/1612781/

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