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Questions tagged [keep-alive]

29 questions
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Ubuntu concurrent connections

I'm behind a proxy that is "Enterprise DDoS Protected". On a normal day with normal connections to all my servers the concurrent connections on the proxy is 17,000. Yes 17,000 is normal for the nature of my sites. 90% of the traffic is requesting…
Tabatha M
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Is it better to disable Keep-Alive in IIS 7 for high traffic web applications?

The advice below applies to Apache, but it seems generic enough to apply regardless of system. My architecture is 3 web servers behind a load balancer. My IIS servers currently have keep-alive enabled with the default connection timeout of 2…
dan
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Apache Config for High Page View, Long Session Users - KeepAlive and MaxRequest variables

I am currently running a web app that sees several (~15) users logging in once each day, and then leaving the web app open where it automatically refreshes with new content every 5 minutes. Each user tends to have it open for about 15-18…
JiminyCricket
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On Debian system, keepalived is consuming full cpu usage on both kibana nodes

I have master/slave kibana machines on Debian 10. From few days, cpu usage of keepalived daemon on both nodes are reaching to 100%. After keepalived restart it goes to normal, and this loops forever. I am not sure, what exactly is wrong with my…
Roushan Jha
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AWS ALB and HAProxy Keep-Alive header

Has any one come across this behavior? AWS ALB is sending traffic to HaProxy. HaProxy sets keep-alive header to 29 seconds. Client connected to ALB does not see this header. It can only see "Connection: keep-alive" header. Basically, ALB is…
Sameer Naik
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keepalive_disable parameters nginx for particular useragent/browsers

I am using keepalive_disable in nginx conf this requires for Syntax: keepalive_disable none | browser ...; Default: keepalive_disable msie6; Context: http, server, location Now i have two problems other than safari, msie6 i was not able to…
Shoaib
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Why does Amazon recommends reading 'all data' as soon as possible during S3 download?

While reading up official documentation on Amazon S3 Java SDK, I found an interesting note: Your network connection remains open until you read all of the data or close the input stream. We recommend that you read the content of the stream as…
Juzer Ali
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HTTP client leaking connections when keep-alive is enabled

I have set up an HTTP server for an embedded system to communicate with a known non-malicious remote client application. I have had to disable keep-alive support on my server, as the remote client application always requests keep-alive but never…
Nathan Owen
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how to emulate a browser that doesn't have "Keep alive"

I have a remote webserver listening on port 80, which serves a page which loads 100 individual .png files (from the same server and hostname) via 100 tags. On that remote server I do watch -n 1 "netstat -na | fgrep ":80 " | fgrep…
cherouvim
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Can keep alive be enabled over secure https?

I've been trying to enable Keep Alive on my https site with no luck. Is it possible? Sometimes I see on my test page it says "connection closed." Here's what I have in my htaccess right now that doesn't seem to work: Header set Connection…
Freejoy
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Scriptable FTPS client able to send Keep Alive to control port?

We need a FTP client that satisfies the following constraints: Windows Command-line scriptable, so we can automate it...sorry, FileZilla (?) FTPS, as it seems to perform better than SFTP The ability to send KeepAlive commands to the FTPS control…
iokevins
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keepAlive in Apache causing apache to reach its max_clients

I have an Apache 2.2 running on ubuntu 11.4 with 16Gb RAM, for image hosting from mobile phones through GPRS,since connection is slow i have enabled keepalive and set time out to 6,**based on average loading time.But usually even with 10-20 users…
ananthan
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How to add persistent connection support to a load-balanced HTTP webservice

We are working on an HTTP webservice load-balanced using haproxy. The webservice is accessed via SSL. It is a RESTful HTTP service and simply accepts JSON, does some work, and returns JSON. There is no notion of a session. We have redundant…
jkndrkn
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What's the difference between Nginx 'keepalive_time' and 'keepalive_timeout'?

In official Nginx docs a new directive added since v1.19.10 named keepalive_time 1h: Nginx keepalive_time Doc Limits the maximum time during which requests can be processed through one keep-alive connection. After this time is reached, the…
Mohamad Reza
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