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How can I eliminate slow resolving/loading of localhost/virtualhost (a 2-3 second lag) on Mac OS X L
...server is looking at 127.0.0.1, those hosts need to be at the HEAD of the /etc/hosts file for fast lookups. I have several dozen 127.0.0.1 lines, only when I moved them to the TOP of the /etc/hosts file did they resolve fast for me.
– Joey T
Apr 26 '14 at 3:11...
How to declare a structure in a header that is to be used by multiple files in c?
...used:
struct MyStruct ; /* Forward declaration */
struct MyStruct
{
/* etc. */
} ;
void doSomething(struct MyStruct * p) /* parameter */
{
struct MyStruct a ; /* variable */
/* etc */
}
While a typedef will enable you to write it without the struct keyword.
struct MyStructTag ; /* Forwar...
How do I run a Node.js application as its own process?
...ry Linux distribution comes with systemd, which means forever, monit, PM2, etc. are no longer necessary - your OS already handles these tasks.
Make a myapp.service file (replacing 'myapp' with your app's name, obviously):
[Unit]
Description=My app
[Service]
ExecStart=/var/www/myapp/app.js
Restart...
How Drupal works? [closed]
...s theming/skinning system. There, it's wrapped in sidebars/headers/widgets/etc..
The rendered page is then handed back to apache and it gets sent back to the user's browser.
During that entire process, Drupal and third-party plugin modules are firing off events, and listening for them to respond. ...
psql: FATAL: Ident authentication failed for user “postgres”
...
Edit the file /etc/postgresql/8.4/main/pg_hba.conf and replace ident or peer by either md5 or trust, depending on whether you want it to ask for a password on your own computer or not.
Then reload the configuration file with:
/etc/init.d/p...
Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc
...re looking for is part of the index used to find the data the server will fetch the data right there, if you do a select * it will most likely have to do what is called a bookmark lookup, which requires an extra scan to find the rest of the underlying data, which you may not even need.
...
Design Patterns web based applications [closed]
...bility should be distributed among Servlets, criteria to make new Servlet, etc.
5 Answers
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What is the difference between Google App Engine and Google Compute Engine?
...fferent events, which may include HTTP requests, changes in Cloud Storage, etc.
The biggest difference with App Engine is that functions are priced per 100 milliseconds, while App Engine's instances shut down only after 15 minutes of inactivity. Another advantage is that Cloud Functions execute imm...
R data formats: RData, Rda, Rds etc
...Rda is just a short name for RData. You can just save(), load(), attach(), etc. just like you do with RData.
Rds stores a single R object. Yet, beyond that simple explanation, there are several differences from a "standard" storage. Probably this R-manual Link to readRDS() function clarifies such d...
REDHAT 6.4 X64下ORACLE 11GR2静默安装 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
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修改后不要忘记了重启网络服务
service network restart
3、/etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.8.106 redhat #新增加
/etc/redhat-r...