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MongoDB与内存 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术
...：
shell> sysctl vm.drop_caches=1
平时可以通过mongo命令行来监控MongoDB的内存使用情况，如下所示：
mongo> db.serverStatus().mem:
{
"resident" : 22346,
"virtual" : 1938524,
"mapped" : 962283
}
还可以通过mongostat命令来监控MongoDB的内存使...
Are there console commands to look at whats in the queue and to clear the queue in Sidekiq?
... find them
redis 127.0.0.1:6379> keys *
1) "sidekiq_staging:worker:ip-xxx-xxx-xxx-xxx:7635c39a29d7b255b564970bea51c026-69853672483440:default"
2) "sidekiq_staging:worker:ip-xxx-xxx-xxx-xxx:0cf585f5e93e1850eee1ae4613a08e45-70328697677500:default:started"
3) "sidekiq_staging:worker:ip-...
Setting Django up to use MySQL
...
'PASSWORD': 'DB_PASSWORD',
'HOST': 'localhost', # Or an IP Address that your DB is hosted on
'PORT': '3306',
}
}
You also have the option of utilizing MySQL option files, as of Django 1.7. You can accomplish this by setting your DATABASES array like so:
DATABASES = ...
.htaccess not working apache
...
Looks like require ip overrides require authentication, this behavior are unexpected (allow from certain ip in apache 2.2 dont do this) and in my opinion can be very dangerous, because the ip exception are anulating the authentication, in apach...
Swift 编程语言入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...则基于广受人民群众爱戴的Cocoa和Cocoa Touch框架，展示了软件开发的新方向。
Swift已经存在了多年。Apple基于已有的编译器、调试器、框架作为其基础架构。通过ARC(Automatic Reference Counting，自动引用计数)来简化内存管理。我们的...
How does push notification technology work on Android?
...into my mind is that the device keep server updated with its current path (IP). When google server needs to send notification, it takes its current path and forward message to that path. Am I right to some extent?
– Khawar Raza
Jul 16 '12 at 17:02
...
Use Expect in a Bash script to provide a password to an SSH command
I'm trying to use Expect in a Bash script to provide the SSH password. Providing the password works, but I don't end up in the SSH session as I should. It goes back strait to Bash.
...
Memcached下一站：HandlerSocket！ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...线程了：
mysql> SHOW PROCESSLIST;
也可以通过查询刚配置的端口是否已经被MySQL占用来确认是否安装成功：
shell> lsof -i :9998
shell> lsof -i :9999
完活儿！现在你的MySQL已经具备NoSQL的能力了！
实战
首先创建一个测试用的表：
CREA...
Apache and Node.js on the Same Server
...with the ProxyPass directive in the Apache httpd.conf its not too hard to pipe all requests on a particular URL to your Node.JS application.
ProxyPass /node http://localhost:8000
Also, make sure the following lines are NOT commented out so you get the right proxy and submodule to reroute http req...
How to determine SSL cert expiration date from a PEM encoded certificate?
...
Here's my bash command line to list multiple certificates in order of their expiration, most recently expiring first.
for pem in /etc/ssl/certs/*.pem; do
printf '%s: %s\n' \
"$(date --date="$(openssl x509 -enddate -noout -in "$pem"|cut -d= -f 2)" --iso-8...