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  To our youth

Youth is the best period in our life for most of us. We have dreams, passions and energies. We can work day and night for our dreams.We can hang out with friends the whole day. But there will always be a day when we are not young anymore, our youth will pass by. We will not be able to go back to our youth any more. Do you have anything to say about your youth? Recently, a Chinese IT engineer @本座 wrote a short code snippet to describe our youth. Here we share what she writes: public vo...

   Youth,Programming,Rollback     2013-05-02 05:26:56

  Handle ”cannot modify header information – headers already sent by”

Man PHP developers should encounter ”Warning: Cannot modify header information – headers already sent by ….” error before when executing a PHP script. Here are some solutions to this error. 1. Blank line Check whether there is any blank line after , especially in the files which are used in include() and require(0, some problems are caused by blank lines. 2. Add exit() after head() header (“Location: xxx”); exit(); 3. Use output cache <?php ob_start(); ...

   header sent, PHP error handle     2012-11-17 08:45:22

  Frequently used Git commands

Git configuration git config --global user.name "robbin" git config --global user.email "fankai@gmail.com" git config --global color.ui true git config --global alias.co checkout git config --global alias.ci commit git config --global alias.st status git config --global alias.br branch git config --global core.editor "mate -w" # Configure Editor to use textmate git config -l #List all configurations User's git configuration file : ~/.gitconfig Frequently used Git commands Check、add...

   Git,Command     2013-03-11 19:41:06

  How to create offline HTML5 web apps in 5 easy steps

Among all cool new features introduced by HTML5, the possibility of caching web pages for offline use is definitely one of my favorites. Today, I’m glad to show you how you can create a page that will be available for offline browsing.Getting startedView DemoDownload files1 – Add HTML5 doctypeThe first thing to do is create a valid HTML5 document. The HTML5 doctype is easier to remember than ones used for xhtml:<!DOCTYPE html> <html> ... Create a file named index...

   Offline store,Steps,demo,Html5,Cache     2011-09-20 13:15:45

  Top rules you can't afford to miss while developing a Magento website

A powerful and attractive website has become a vital necessity of every online entrepreneur. Whether its about boosting the inflow of customers or enhancing the overall profitability of your business, a good website can do all the hardwork. The growing demand and popularity of Magento development services has made online merchants switch to Magento for promoting their business products and services via the internet. As a website creator, it is absolutely essential for you to consider some basic...

   Magento development service, offshore Magento development, outsource Magento development, Magento de     2015-06-19 04:21:55

  What is Hystrix and How does Hystrix work

Background In distributed systems, there is one effect where the unavailability of one service or some services will lead to the service unavailability of the whole system, this is called service avalanche effect. A common way to prevent service avalanche is do manual service fallback, in fact Hystrix also provides another option beside this. Definition of Service Avalanche Effect Service avalanche effect is a kind of effect where the service provider fails to provide service which causes t...

   AVALANCHE EFFECT,HYSTRIX,DISTRIBUTED SYSTEM     2019-02-04 06:00:38

  Deep Understanding of ReentrantLock: Unlocking the Mysteries of Java Concurrent Programming

ReentrantLock introduction ReentrantLock is a class in the Java concurrent package, java.util.concurrent.locks, and is an implementation of the Lock interface. As its name suggests, it is a reentrant mutual exclusion lock. A mutual exclusion lock is a synchronization tool used to protect shared resources, ensuring that only one thread can access the resource at a given time. Reentrant means that a thread can acquire the same lock multiple times without causing a deadlock. This lock provides some...

   JAVA,REENTRANTLOCK,CONCURRENCY,MULTITHREADING     2023-05-22 08:01:13

  37 powerful Linux shell commands

To work on Linux platform, you cannot avoid using shell commands to complete some tasks. These tasks can be as simple as list files in some directories or find some text in some file, or can be as complex as monitoring processes. In this post, we will share 37 powerful Linux shell commands.   Task Commands 1 Delete file with 0 byte(empty file) find . -type f -size 0 -exec rm -rf {} \;find . type f -size 0 -delete 2 Check process memory consumption ps -e -o "%C : %p : %z : %a"|sort -k...

   Linux command,List     2013-09-16 07:47:16

  Cache them if you can

“The fastest HTTP request is the one not made.” I always smile when I hear a web performance speaker say this. I forget who said it first, but I’ve heard it numerous times at conferences and meetups over the past few years. It’s true! Caching is critical for making web pages faster. I’ve written extensively about caching: Call to improve browser caching(lack of) Caching for iPhone Home Screen AppsRedirect caching deep diveMobile cache file sizesImproving app ...

   Cache,HTTP request,Websiite     2012-03-27 12:54:02

  Resolving SVN error "Error validating server certificate for..."

When using SVN to connect secure server, the server needs to send its certificate to the client for verification. In some cases, the certificate sent by the server is not a trusted certificate, the client may choose to trust the certificate if the server is target server for sure.  But users may get "Error validating server certificate for 'https://...'" the next time when they try to connect to the same secure server even if they specified "p" the first time when they are prompted to accep...

   SSL,SVN,SVN.SSL.SERVER     2016-06-27 07:36:49

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