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Do HTML WebSockets maintain an open connection for each client? Does this scale?
... limitation that is usually encountered is the maximum number of file descriptors (sockets consume file descriptors) that can be open simultaneously. This often defaults to 1024 but can easily be configured higher.
Ever tried configuring a web server to support tens of thousands of simultaneous AJA...
How to check if a particular service is running on Ubuntu
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For Ubuntu (checked with 12.04)
You can get list of all services and select by color one of them with 'grep':
sudo service --status-all | grep postgres
Or you may use another way if you know correct name of service:
sudo service postgresql status
...
Nginx 403 error: directory index of [folder] is forbidden
... rewrite ^/(.+)/$ /$1 permanent;
}
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
location ~ \.php$ {
fastcgi_split_path_info ^(.+\.php)(/.+)$;
# # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
# # With php5-fpm:
...
httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for Se
...m
Choose an FQDN and include it both in your /etc/hosts file on both the IPv4 and IPv6 addresses you are using (in your case, localhost or 127.0.0.1), and change your ServerName in your httpd configuration to match.
/etc/hosts:
127.0.0.1 localhost.localdomain localhost host.server4-245.com
::...
Using printf with a non-null terminated string
...rray is null-terminated, it just treats it as a longer array that it's sub-selecting from - which means that if you have a string with nulls in it, this will cause problems.
– lahwran
Mar 16 '16 at 0:39
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How do I update Ruby Gems from behind a Proxy (ISA-NTLM)
... Nov 15 '10 at 17:45
Peter MoresiPeter Moresi
2,32911 gold badge1212 silver badges44 bronze badges
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What is the proper way to use the node.js postgresql module?
...romise boils down to just what's relevant to your business logic:
db.any('SELECT * FROM users WHERE status = $1', ['active'])
.then(data => {
console.log('DATA:', data);
})
.catch(error => {
console.log('ERROR:', error);
});
i.e. you do not need to deal with ...
Linux下安装项目管理工具Redmine - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...默认配置
这里会要求选择默认语言，我选的中文zh：
Select language: bg, ca, cs, da, de, en, es, fi, fr, he, hu, it, ja, ko, lt, nl, no, pl, pt, pt-br, ro, ru, sk, sr, sv, th, tr, uk, vn, zh, zh-tw [en] zh
这个默认设置只是在未登录时的界面语言，当用户登...
Importance of varchar length in MySQL table
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Anytime your select query uses a temporary table (group and order by operations, among other things) it will convert varchar(200) to a char(200) and performance will suffer.
– Jamie
Feb 7 '13 at 20:1...
Where can I get a list of Ansible pre-defined variables?
...les that we can use in playbooks and template files. For example, the host ip address is ansible_eth0.ipv4.address. Googleing and searching the docs I cound't find a list of all available variables. Would someone list them for me?
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