node data cache time through the Cache-control:max-age fields in the HTTP response header.
When the client requests data from the CDN node, CDN node will determine whether the cached data expires, if the cached data does not expire, the cached data directly back to the client; otherwise, the CDN node will send back the source request to the source station, pull the newest data from the source station, update the local cache, and return the
In Microsoft's newest WIN8 system, users can use the Microsoft account password and the normal password as the power-on password, but also can use the picture password and simpler pin that support to pack up the operation. The following is a detailed description of how to set up picture passwords and pin codes.
Picture cipher is a new way to help users protect their touch Win8 computers. Users can create their own unique passwords by selecting p
Microsoft has recently shown its newest two "Computers" with Windows 10, one of which looks like the image below.
Eh, how is the power plug? Is there really no wrong map?!
This is indeed Microsoft's new product--quanta Compute Plug. Long and plug is no different, but it is a do not give up the mini computer, in the words of Microsoft, the inside is really "computer hardware built-in." However, Microsoft did not disclose its detailed conf
One, scheduled backup MySQL database
For security purposes, execute directly with root:
The code is as follows
Copy Code
/root/mysql_backup.sh# everyday 3:00 AM Execute database backup3 0 * * */root/mysql_backup.sh
The following is automatic automatic backup shell, only the latest 5 days
The code is as follows
Copy Code
#!/bin/sh# mysql_backup.sh:backup MySQL databases and keep newest
The Ylog.net homepage has the newest diary and the newest comment two items, the diary title and the comment content often exceeds the length and automatically wraps the line, can only use the ugly two words to describe, this let me have a headache unceasingly ...
The first thought is to intercept a paragraph and then write this function
This operation with JS, the client can be implemented to ease the burd
motherboard
asus B150 PRO Gaming/aura
¥899
memory
Kingston hacker God strip DDR4 2400 8g*2
¥569
hard Drive
Toshiba Q300 240GB Solid State
¥449
chassis
tt Core V1 black
power
Xin gu gp600g
¥279
monitor
user optional
--
mouse mount
user optional
--
Reference price
5703 $ (without display)
related
.
Inadequate: As a desktop machine, Intel's newest generation of processor energy-saving features can not be reflected, while the display of the stent can not be adjusted space is very large.
Recommended reason: As a large screen, touch operation and have excellent game performance of the Desktop All-in-one, Dell XPS 27 can be said to be the consumer's home all-round good helper.
Lenovo Yoga 2Pro
Price: 1050 USD (about 6400 RMB)
Leno
Scripts are placed in the/home/user/mysql tutorial _backup.sh
Crontab
# crontab-l
# m H Dom Mon Dow command
* * */home/user/mysql_backup.sh
The script is as follows
#!/bin/sh
# mysql_backup.sh:backup MySQL databases and keep newest 5 days backup.
#
# Last updated:20 March 2006
# ----------------------------------------------------------------------
# This are a free shell script under GNU GPL version 2.0 or above
# Copyright (c) 2006 Sam T
on a separate machine to manage multiple master-slave clusters, MHA node runs on each MySQL server, the main role is to process the binary log when switching, to ensure that the switch as little data loss. MHA Manager periodically probes the master node in the cluster, and when master fails, it automatically promotes the slave of the latest data to the new master and then points all the other slave back to the new master. The entire failover process is completely transparent to the application.
correspond, and when you use it you will find that you move to one of the smaller graphs, and the other side of the graph will show up accordingly. This is a very good thing to do. Details are destined to be successful.
Third, visitor sources:
This table can be seen at a glance the proportion of the source of your site traffic.
Four, visitor keywords:
What this table does better than the CNZZ statistic is that a small table shows the top 10 keywords for the source of tra
world to see "face"
Tapping the keyboard and clicking the mouse will make it possible to enter the world of Internet connections. On some enterprise website, not only has the newest industry dynamics, the product release and so on content, its unique individuality color collocation, the link design has left the unforgettable impression. No wonder someone says that corporate web is another face of business. But what can not be neglected is that the pe
();
var regex =/\//g;
(temp.tolocaledatestring () + ' + temp.tolocaletimestring (). Slice (2)). Replace (regex, '-');
"2015-5-7 9:04:10"
Want to convert the time after format to a time object? Directly using the date constructor
New Date ("2015-5-7 9:04:10");
Thu May 2015 09:04:10 gmt+0800 (CST)
Want to convert a standard time object to the Unix timestamp? ValueOf's done.
(new Date). valueof ();
1431004132641
Many friends also remind you that you can quic
number of fans, the first idea is to beautiful said space to leave ads. This is a wrong idea. Because their space comments and reviews are very strict, there is little possibility of advertising. Moreover because of their QQ space access volume is very large, even if you leave the advertisement, within a few minutes will also be pressed down, no use.
The way we use it is to get the QQ of the newest visitors to their space, and then do the precision
= intval ($HTTP _get_vars[post_topic_url]);# }# Else if (isset ($HTTP _get_vars[' topic '))# {# $topic _id = intval ($HTTP _get_vars[' topic '));# }
From the above we can see that if the submitted View=newest and SID set the value, execute the query code like this (if you have not seen the PhpBB source code, I suggest you look at this, the affected system is: PhpBB 2.0.5 and PhpBB 2.0.4).
# $sql = ' Select p.post_id# from '. Posts_table. "P,
_get_vars[post_topic_url])# {# $topic _id = intval ($HTTP _get_vars[post_topic_url]);# }# Else if (isset ($HTTP _get_vars[' topic '))# {# $topic _id = intval ($HTTP _get_vars[' topic '));# }
From the above we can see that if the submitted View=newest and SID set the value, execute the query code like this (if you have not seen the PhpBB source code, I suggest you look at this, the affected system is: PhpBB 2.0.5 and PhpBB 2.0.4).
# $sql =
would want to be violent, unless there's a particularly important reason). Look at the relevant source code first:
# if (Isset ($http_get_vars[post_topic_url]))
# {
# $topic_id = Intval ($http_get_vars[post_topic_url]);
# }
# Else if (isset ($http_get_vars[' topic '))
# {
# $topic_id = intval ($http_get_vars[' topic '));
# }
From the above we can see that if the submitted View=newest and SID set the value, execute the query code like this (if
data structures in computer science, these concepts should be easy to sort out, because the logical structure is linked lists and trees.
First, a commit in the Git repository is a snapshot of the workspace, which is the current workspace file state save. Each commit is made on the basis of the previous commit, so a list structure is formed between commits, and a commit chain is called a branch.
A commit chain can produce a new branch, and the commit of the new branch is based on the commit of t
level two domain names, small sites, such as corporate web site in the form of catalogs. about what is the level two domain name and directory, we can go to Baidu.
Then look at Seowhy's homepage design:
Picture explanation:
Seowhy's homepage mainly has these several modules: Today recommendation, the reader recommendation, week recommended ranking, the newest submission, the month recommended ranking, the basic course, the
discarded. In addition, the switch makes logical operation of the filtering rules through hardware "logic and non-gate", realizes the filtering rules, and does not affect the data forwarding rate at all.
Security Tip Two: 802.1X access control based on ports
In order to prevent illegal users from accessing the LAN and ensuring the security of the network, the port-based access Control protocol 802.1X is widely used in both wired LAN and WLAN. For example, the new generation of switches, such
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