SEARCH KEYWORD -- Application field


  Create cron job on CentOS

These two days, I am building a website and deploying it on a VPS server which uses CentOS 5. I don't have cPanel or Plesk for my account, so I need to install and configure everything myself including Apache, PHP, MySQL and FTP server, also today's topic cron job. Since my website has a ranking algorithm to calculate the rankings of each link and update the ranking on database and I need to calculate the rankings every 5 minutes, so I think to use cron jobs. Here are what I have done which may ...

   cron job,crontab,CentOS,linux,php,example     2012-06-11 09:23:45

  A trick of building multithreaded application on Solaris

Firstly, Let’s see a simple multithreaded application: #include <stdio.h> #include <pthread.h> #include <errno.h> void *thread1_func(void *p_arg) { errno = 0; sleep(3); errno = 1; printf("%s exit, errno is %d\n", (char*)p_arg, errno); } void *thread2_func(void *p_arg) { errno = 0; sleep(5); printf("%s exit, errno is %d\n", (char*)p_arg, errno); } int main(void) { pthread_t t1, t2; ...

   C, Solaris     2014-10-14 02:59:40

  Instagram has more than 100 million users

On TechCrunch Disrupt, Facebook CEO Mark Zuckerberg said that Instagram users is over $100 million.According to comScore data, Instagram traffic in July rose 38%, it becomes the 56th site in United States. And Instagram official said that the number of users was 80 million and over four billion photos uploaded to the server in July.Last week, Facebook formally completed the acquisition of Instagram, the final cost is $735 million. Zuckerberg says he wants to help the growth of the application, ...

   Facebook,Instagram,Users     2012-09-11 19:50:57

  Differences among Enter,F5 and Ctrl+F5 in webpage refresh

When we press Enter, F5 or Ctrl+F5 to refresh a webpage, is there any difference among them? Actually it's yes, we can find the difference from the request header and response header information. There are two cases about pressing Enter in the address bar. First if the page requested is cached and not expired in the browser, we can find the header information sent by the browser is : Host 192.168.3.174:8080 User-Agent Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Accept ...

   Refresh,F5,Ctrl+F5     2013-06-13 22:03:35

  Google Allo - Changing the way people chat

Google released a new smart messaging application a couple of weeks ago -- Google Allo. At first glance, it has no much difference than other mature messaging applications on the market such as What's App, Line, WeChat. It has a concise and easy to use user interface and comes with stickers, doodles, and HUGE emojis & text. But do we really need a new messaging application which is similar to others in most aspects? The answer is MAYBE. From its description, it claims it's a SMAR...

   GOOGLE,AI,GOOGLE ALLO,GOOGLE ASSISTANT     2016-10-03 09:44:51

  Spurring the Consumer Feedback Loop with Connected Devices

In a press release from earlier this year, Gartner had predicted that by the year 2018 mobile devices would account for initiating 5% of consumer services cases, registering a marginal rise of 0.02% from 2014. Research shows that most businesses lose around a whopping $83 billion owing to poor consumer services (Source: kissmetrics) in the US alone while globally, the average cost of losing a consumer is $243. It is only viable to think of automating support services as a way to lower the costs ...

   Big Data Analytics Solutions, Loyalty Programs for Customers     2015-08-18 07:11:35

  Google releases new app to improve the accuracy of indoor positioning

Google Maps, Bing Maps, and some map providers have offered indoor map service such as in  the airport, major shopping malls and stadiums for some time. The problem is that these indoor maps can not precisely tell you which floor you are on a map, the GPS obviously can not work very well in this environment, WiFi and GPRS positioning is not very precise. Google announced the improvement program of Google Maps for accurate indoor positioning. The current owners of these places will cooperat...

   Google Map,Indoor service,Positioning     2012-04-08 09:46:53

  Why TCP needs 3 handshakes

Prerequisite Knowledge First, let's look at the control bits and state machine of TCP, which form the basis for understanding the three-way handshake of TCP. TCP Packet Control Bits The control bits in the TCP packet header are used to control the status of the TCP connection and can indicate various control information such as connection establishment, termination, reset, etc. There are six common control bits: SYN (Synchronize Sequence Numbers): Requests to establish a connection (part of the...

   REASON,NETWORK,TCP,EXPLANATION,HANDSHAKE     2024-09-28 08:57:52

  Why to Build Modern Web Apps with ASP.NET?

ASP.NET offers multiple options for fabricating cloud-based web applications. Its features such as the ability to cope up with different platforms including Mac, Linux, and Windows along with its open source nature indicate its efficiency. The various architectural modifications in the core framework have made the system more affable, and modular components make the job easier by simplifying the various implications.  Microsoft has worked on the roots of this software to render a sophistica...

   WEB DEVELOPMENT,ASP.NET DEVELOPMENT, WEB APPLICATION DEVELOPMENT,.NET DEVELOPMENT     2016-01-25 03:43:26

  When and Where to Use Pointers in Go

When declaring variables in Go, we usually have two syntax options: In some scenarios, pointers; in others, reference; sometimes, either. It’s great to have choices, but it is also confusing sometimes as to which one in which scenario. To be more reasonable in choice-making, I started from pointers, walked through their natures, and summarized some rules in using them in Go. from unsplash, Jordan Ladikos Pointers Go has pointers. A pointer holds the memory address of a ...

   POINTER,GOLANG     2022-05-01 02:24:43

RECENT