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  Good ways to build communities around a web product

If a product wants to be successful, there are must be a group of loyal users of the product. Though their influence, more and more people get to know and product and start to use the product and again promote the product. The most difficult thing to promote a product after building an excellent product is to find the first bunch of users. For web products, same conditions apply, but the ways to promote the product may be more abundant. Besides the advertisement, there are other ways a web produ...

   Web product,Community,Promotion     2014-03-12 07:37:05

  PHP's Output Buffering

While profiling our application I came across a a rather strange memory usage by the ob_start() function. We do use ob_start() quite a bit to defer output of data, which is a common thing in many applications. What was unusual is that 16 calls to ob_start() up chewing through almost 700kb of memory, given that the data being buffered rarely exceeds 1-2kb, this was quite unusual. I started looking at the C code of the ob_start() function and found this interesting bit of code inside php_sta...

   PHP,Memory,ob_start(),source,40kB     2011-12-08 10:20:32

  Is Scala Only for Computer Scientists?

I have experience struggling through these kinds of things andI know enough about the subject that I can understand why they did it that way. But my concern is that this should be an example that a beginner could understand, and they can't. There's too much depth exposed. Here's the example, which is written as a script: import scala.io.Source._ case class Registrant(line: String) { val data = line.split(",") val first = data(0) val last = data(1) val email = data(2) val payment = da...

   Scala,Application field,Computer science     2012-02-17 07:46:40

  var in JavaScript

Geoff published an article sometime ago--"How one missing var ruined our launch". This article described one case where MelonCard uses Node.js as their backend system, suddenly there was a small registration peak period--50-100 people registered concurrently, then the entire website stopped responding and many other strange problems showed up. When they were investigating the source of the problem, they found one missing var in the following code.app.all(‘/apps/:user_id/status’, fun...

   JavaScript,Scope,variable     2012-05-26 12:35:36

  Get Facebook, Twitter and YouTube back

Facebook, Twitter and YouTube have become part of many people's daily network life. People hang around these sites to network with known and unknown friends, to know about the latest news and to relax with fancy video clips. But what will you feel if all of a sudden you cannot access them? Want to experience this? Go behind the GFW(Great Firewall) of China. Just a joke, but it's real. Huh, you are out of China? Don't worry. Change your DNS server to those located in China. I just experienced it,...

   DNS spoofing, GFW, YouTube, 37.61.54.158     2014-12-20 21:41:34

  Funny Linux commands

1. sl You will see a train moving from the right to left on the screen. Install : $ sudo apt-get install sl Run : $ sl It has options like -aiFe: -a An accident seems to happen. You'll feel pity for people who cry for help.-l shows little one.-F It flies.-e Allow interrupt by Ctrl+C. We can also make fun of other people by setting an alias like below: $alias ls=sl When the user types ls, he will see the train instead of the file list. 2. fortune Output one statement, it can be a joke, or famous...

   Linux,funny command,figlet,sl     2013-06-08 21:30:26

  The 5 types of programmers

In my code journeys and programming adventures I’ve encountered many strange foes, and even stranger allies. I’ve identified at least five different kinds of code warriors, some make for wonderful comrades in arms, while others seem to foil my every plan. However they all have their place in the pantheon of software development. Without a healthy mix of these different programming styles you’ll probably find your projects either take too long to complete, are not stable enou...

   Programmer,Type,Anti-Programmer,OCD     2012-01-11 04:40:09

  Understanding PHP's internal function definitions

Welcome to the second part of the “PHP’s Source Code For PHP Developers” series. In the previous part ircmaxell explained where you can find the PHP source code and how it is basically structured and also gave a small introduction to C (as that’s the language PHP is written in). If you missed that post, you probably should read it before starting with this one. What we’ll cover in this article is locating the definitions of internal functions in t...

   PHP,internal function,definition,rationale     2012-03-16 10:46:26

  Singleton Pattern in Golang

Singleton pattern is the simplest design pattern in software design. It ensures that only one instance of an object exists globally, regardless of how many times the object is instantiated. Based on the characteristics of the singleton pattern, it can be applied to scenarios such as global unique configuration, database connection objects, file access objects, etc. In Go language, there are multiple ways to implement the singleton pattern. Today, let's learn together about some of these approach...

   GOLANG,SINGLETON PATTERN,TUTORIAL     2023-08-18 23:52:05

  What Makes A Successful Cryptocurrency?

The cryptocurrency landscape today is a little bit of a maze. There seem to be countless cryptos available — thousands of them, by some estimates — and unless you’re particularly well versed in this technology, it can be difficult to tell what differentiates them. To cut through some of the confusion, we decided to take a closer look at cryptocurrencies. We won’t simply list the most prominent ones, the way so many sites already have. Instead, we’re going to look i...

   BITCOIN,CRYPTOCURRENCY     2020-08-25 05:13:22

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