python real time plotting

Definition: First, we define targeted crawling. Targeted crawling is a specific crawling requirement. The target site is known, and the website page is known. This article focuses on how to quickly build a real-time crawling system, and does not include common features such as Link Analysis and site discovery. In the instance system mentioned in this article, we mainly use Linux + MySQL + redis + Django + s

Original link: http://www.656463.com/article/ZJZvIv.htm I. OverviewA lot of data is stored on the MongoDB, need to quickly search out the target content, so build SOLR service.Another point, after using SOLR index data, you can use the data in different projects, directly to the SOLR service to send requests, return XML, JSON and other forms of content, make the use of data more flexible.The description of MongoDB and SOLR is not explained here, this article is intended to provide

typed. 2. Find a code editor Selecting a code editor can save a lot of time. Faced with so many code editors, many new users will feel confused. It is confusing to use other editors in an editor, so it is a good starting point to select a name. No matter which one you choose, you must support flake8 and PEP8 in real time. For more information about how to select

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 Http_refererAverage Body Bytes Sent responses of

Reference address http://www.ttlsa.com/nginx/nginx-modules-ngxtop-ttlsa/ Ngxtop Real-time parsing nginx access log, and the processing results output to the terminal, functions similar to the system command top, so the software named Ngxtop. With Ngxtop, you can immediately understand the current nginx access situation, no longer need to tail log to see screen refresh. 1. Install Ngxtop 1.1 Source Installat

Yesterday I stumbled across the Meteor Web development Framework, I've been exposed to a web development framework of about more than 10 different languages, and this meteor framework shocked me, It's too different from the other frameworks (including some of the same nodejs-based frameworks like Express, new Python-based framework Flask,tornado, etc.). Meteor is a real-

bar.I just want it to show the speed, so customize output: only {net}, you can select the sensors item, then click Add (A), add other items to display, some items seem to show less right. You can also enter it by format in Customize output:.For example, enter: CPU: {CPU} MEM: {mem} net:{net}, then click TestFor example, enter: CPU:{CPU} Memory: {mem} speed: {net}, then click TestTry setting another format, then test until the effect is satisfied and then click Save.Ubuntu 14.04 title bar shows

For Nginx real-time Access data statistics, Ngxtop can be used to monitor Web server access. Ngxtop allows you to parse the access log of NGINX in real time and output useful information similar to top. Ngxtop is a Python script installation package that requires

;height:auto;width:auto; "alt=" 640?wx_fmt=jpeg tp=webpwxfrom=5wx_lazy "/> Sentry's permissions and entity settings basically meet the needs of reality: 1, if a team is responsible for multiple projects, can be achieved through a team of multiple project methods. 2. If a person participates in multiple teams, you can add the user to more than one team. 3. A team or project sets the appropriate owner, and this person can be responsible for the activities within that team o

Recently customers need to use FTP upload video business to me. 0.0 is very tangled why do not give the URL, do not want to give FTP, I also have to download upload to our serverGroped for a moment and wrote a brief script. (finally useless, with someone else's python written) determined to learn python!!!!Script:#!/bin/bashu=p=ip=dir= #本地机器主目录 (directory after CP)backup=#本地机器备份目录 (First update Catalog)rec=

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

die import Dieimport pygal# 实例化两个Die类对象die_1 = Die()die_2 = Die(10) # 注意这里传入10results = []for roll_num in range(50000): result = die_1.roll() + die_2.roll() results.append(result) # 将结果放入results列表frequencies = []max_result = die_1.num_sides + die_2.num_sides# 将实验的结果数据统计出每个数字出现的次数for value in range(2, max_result + 1): frequency = results.count(value) frequencies.append(frequency)# 绘制直方图# 实例化一个bar对象，对该对象的title、x_labels、x_title、y_title属性设置相当于在直方图设置。hist = pygal.Bar()hist.title = "Res

How to output Tomcat logs to the web page in real time Recently, an automatic release system for the Web version was developed. A function is provided to output Tomcat's catlina. out log to the web page. After it is made, it makes a better life. Coders will no longer bother me with reading logs. They will have time to expand and collect and filter logs in a unifi

much information on system resources. But if you are a system administrator who wants to get the overall status of the system from the command line, this tool is definitely a must.Translator note Please do not confuse glances (the tool in this article) with glance (an OpenStack tool) these two packages Ubuntu official Extra Source glances because the problem with the Python library move is not working properly but can be fixed temporaril

, it is necessary to learn. Although HTML5 WebSocket has some limitations, it is a general trend, Microsoft has clearly expressed the future of HTML5 support, and these support we can see in Windows 8 and IE10, we also on a variety of mobile devices, tablets see HTML5 and WebSocket's figure. WebSocket will become the future development of real-time WEB application of the new force should be no suspense, alt

How can I implement real-time alarm functions through shell scripts and enterprises ?, Shell Information At work, we will have some applications running on the server online, so these applications have problems. For example, after the memory and CPU exceed the threshold, we must first know and handle these problems as soon as possible, try to make the user feel the exceptions of the application. Some compan

First, demand:A process with a process name that may correspond to multiple process numbers is monitored on Linux, and output to a log file if there are multiple.The above problem is for a timed program has not run the end, to the next moment the program is running again, to avoid causing repeated calls interface error.Second, the settlement:#!/Bin/sh# (Sh pid_monitor.sh)#被监控的进程放在后台运行 whiletrue #死循环不断监控后台运行的进程do pid_num=' PS-Ef|Grep-V grep|grep root_sub_i2_data|Awk'{print $}'|Wc-l ' #取后台运行程序的进程号

Openpose is a use of OpenCV and Caffe and written in C + + open Source Library, used to achieve multithreading of multiple key real-time detection, the author includes gines Hidalgo,zhe cao,tomas simon,shih-en Joo and Yaser Sheikh. Going to join (but already implemented.) Body + gesture + face estimation display: Although the library uses Caffe, the code can easily be ported to other frameworks, such as Te

Most of the site's performance bottlenecks will be on the database, so want to monitor the MySQL, the search for the relevant information.Later and colleagues discussed the next cacti and nagios some old and outdated, graphite more fashionable, and then searched the relevant information, finally made out, the effect is as followsCan see in real time MySQL Open table number, the number of files, is executing

Lightcolorizedstyle, and takes aliases, followed by aliases, which makes it much easier to filename = ' Population_data.json ' with open ( FileName) as F: # function Json.load () converts data (file object) to a format that Python can handle, Pop_data = Json.load (f) # Pop_data is a list, each element contains a dictionary of four keys CC_ populations = {}for pop_dict in pop_data:if pop_dict[' year '] = = ': country_name = pop_dict[' country