Your website content is very valuable, want to be Google, Baidu and other regular search engine crawler included, but do not want those without moral integrity of the cottage crawler to take your data off the free. This article will explore how to add an elegant anti-crawler strategy to your website.IdeasThe following points are considered in the anti-crawler strategy:
Can be Google, Baidu and other regular search engine crawler crawl, unlimited tra
There are many open-source network monitoring tools for Linux operating systems on the Internet. For example, you can use the iftop command to check the bandwidth usage, netstat to view the interface statistics report, and the top monitoring system's current processes. However, if you want to find a real-time process-based system
There are many open-source network monitoring tools for Linux operating system
First download the RPM package for the rpmforge-release extension32-bit operating system: wget http://www.sudu.us/Tools/bmon/rpmforge-release-0.3.6-1.el5.rf.i386.rpm64-bit operating system: wget http://www.sudu.us/Tools/bmon/rpmforge-release-0.3.6-1.el5.rf.x86_64.rpmto install the rpmforge-release extensionRPM-UHV rpmforge-release-0.3.6-1.el5.rf.i386.rpm or rpmforge-release-0.3.6-1.el5.rf.x86_64.rpmThen you can install Bmon using Yum Setup.Yum-y Install Bmonafter the installation, the direct exe
specify the access log file and/or log format, use The-f and-a options.' Top ' like view of Nginx requests$ ngxtop404 request of the first ten$ ngxtop Top Request_path--filter ' status = = 404 'Total flow of top ten requests$ ngxtop--order-by ' avg (bytes_sent) * count 'IP address of top ten of traffic$ ngxtop--group-by REMOTE_ADDRThe request to output more than 400 states and the source of the request$ Ngxtop-i ' status >= ' Print request status Htt
What is Nethogs?
Nethogs is an open source command-line tool (similar to the Linux top command) for real-time statistics of network bandwidth usage by process or program.
From Nethogs Project website:
Nethogs is a small ' net top ' tool that does not slow down each protocol or the speed of each subnet, as most tools do, but to group bandwidth by process. Nethogs Nethogs does not need to rely on loading
, and the client may behave differently during deep sleep (wake lock, Alarm, WiFi switch). )Also recommended Betterbatterystat http://forum.xda-developers.com/showthread.php?t=1179809-Take out the bagafter the capture, because the file is written through the root account, Windows can not see, the MAC itself is not supported, so stop back to the system shellADB pull/sdcard/tmp.pcap.four, real-time view grab
In the network application, sometimes need to monitor the network status of the user device in real time, there are two purposes:(1) Let users know their network status, to prevent some misunderstandings (such as the application of incompetence)(2) According to the user's network status intelligent processing, save user traffic, improve the user experienceWiFi ne
Now with the advent of the terminal (mobile phones, ipads and other tablets), as well as the various terminals of the phone resolution and size are different, now mobile phone user traffic is treasure, there are a variety of online generation of thumbnail features of the architecture, there is a real-time use of PHP generated thumbnails, but also useful nginx + L
private language by the company network management monitoring, and leaked to the whole company colleagues and angrily left. The network administrator who does not know his own behavior has violated the criminal law is using a kind of internet monitoring software which is used in many enterprises. This kind of monitoring software is thus dubbed by the industry as the third Eye of network management.
Software is installed on the LAN server, is the desktop monitoring, which is divided into the fol
We mentioned earlier that there are many Linux system monitoring tools that can be used to monitor system performance. However, we estimate that more users may prefer tools (top commands) that are included in most Linux distributions ). The top command is a real-time task manager in Linux. it is also used to find the system performance in the GNU/Linux release.
We mentioned earlier that there are many Linux
Started a few months ago to do some cacti related work, using cacti to monitor some important network devices and servers. Cacti is based on the SNMP protocol, which is used to poll for information about the monitored device (Traffic server resource usage, etc.). But sometimes there are devices that cause a false positive as SNMP down because the polling response time is long or is not polled at the specifi
Original: http://www.ttlsa.com/nginx/nginx-create-image-on-disk/Now with the advent of the terminal (mobile phones, ipads and other tablets), as well as the various terminals of the phone resolution and size are different, now mobile phone user traffic is treasure, there are a variety of online generation of thumbnail features of the architecture, there is a real-time
Recent research on the Android video recording, another mobile phone real-time viewing, there are a few ideas.1. The Android phone acts as a server, uses NANOHTTPD to act as a server, and another phone or PC is viewed by entering http://Phone's ip:8080 URL.This scheme can refer to Ipcamera-for-android Open source project, URL Http://code.google.com/p/ipcamera-for-android/source/checkoutThe source code that
We mentioned earlier that there are many Linux system monitoring tools that can be used to monitor system performance. However, we estimate that more users may prefer tools (top commands) that are included in most Linux distributions ). The top command is a real-time task manager in Linux. It is also a common system monitoring tool used to find system performance bottlenecks in the GNU/Linux release and to
I. design of state machine for access control system of automobileState machine all states:Entry Gate sensor (two states): Ture False (denoted by ET and EF, respectively)Gate sensor (two states): Ture False (expressed in OT and of)Landing lever (two states): Up-down (indicated by up and DW, respectively)Traffic light (two states): Red Green (denoted by R and G respectively)External events received by the state machine:Car entry and Exit Access System
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