SEARCH KEYWORD -- speed


  Some thoughts about competitive programming

Many programmers may have experience in participating different kinds of coding competition while they are in college. Many of them are hired by top IT companies for their excellent performance during these kinds of coding competitions. There are some famous competitions organized by IT companies such as Google Code Jam, Facebook hackathons etc. Coding competitions are places where programmers can show their talents in programming and the skills they have. Usually programmers will solve some to...

   Coding,competition     2014-03-02 07:26:21

  gethostbyname vs getaddrinfo

getaddrinfo is slower than ping when resolving domain names. I think ping uses gethostbyname to resolve a domain name. The question becomes whether getaddrinfo is slower than gethostbyname. After testing with both functions, we find that getaddrinfo is really slow compared to gethostbyname. By strace tracking,  we find getaddrinfo will communicate with DNS server 10 times and gethostbyname will communicate with DNS server communication twice.gethostbyname is an old way to resolve domain nam...

   C++,network,DNS     2012-08-15 14:06:34

  How Kafka achieves high throughput low latency

Kafka is a message streaming system with high throughput and low latency. It is widely adopted in lots of big companies. A well configured Kafka cluster can achieve super high throughput with millions of concurrent writes. How Kafka can achieve this? This post will try to explain some technologies used by Kafka. Page cache + Disk sequential write Every time when Kafka receives a record, it will write it to disk file eventually. But if it writes to disk every time it receives a record, it would ...

   BIG DATA,KAFKA     2019-03-08 09:42:57

  A Brief Guide to Voice Navigation and the Future of UX Design

Voice devices are now everywhere, whether you like them or not. Amazon's Alexa, Google's Assistant, and Apple's Siri have proved that voice interactions are not from science fiction films but part of our new reality. Just as touch screens, voice interaction with devices will completely revolutionize how we interact with our computers, smartphones, and watches (and even cars and houses) in the coming years. But you might ask yourself, why is it evolving at such a fast speed? Well, there are many ...

   UX DESIGN     2021-11-25 02:24:55

  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

  As A Hottest Job Ever, What Should You Know As A Front End Web Developer?

The front end web developers are the openers for the visitors to visit the web page. It is also known as the client-side development, works predominantly with HTML, CSS, and Javascript. The tools and techniques are the important players of the front end web development. The developer must be aware of the updation of web technologies.The scope is evergreen with this technology as every company or business needs a website to showcase their profile. There are many objectives must be measured while ...

   FRONT END DEVELOPER,WEB DEVELOPERS,SOFTWARE DEVELOPERS,TOP SOFTWARE COMPANIES     2019-08-12 05:36:28

  Best practices of front end optimization

1. Use DocumentFragment or innerHTML to replace complex elements insertion DOM operation on browser is expensive. Although browser performance is improved much, multiple DOM elements insertion is still expensive and will affect the page load speed. Assume we have an ul element on our page, we now want to retrieve a JSON list using AJAX and then update the ul using JavaScript. Usually we may write it as : var list = document.querySelector('ul'); ajaxResult.items.forEach(function(item) { // ...

   JavaScript,Front end,Optimization,Tips     2013-07-06 11:26:27

  Show Bootstrap tooltip in AngularJS ng-repeat elements

In contemporary web application development, many front-end frameworks have been used to accelerate the speed of development and circumvent browser compatibility issues. Among them, AngularJS and Bootstrap are two frequently used.  AngularJS is a MVC JavaScript framework developed by Google to provide easy synchronization between user view and data model. While Bootstrap is developed by Twitter and it eases the work of designing a simple and concise UI without much manual design work ...

   BOOTSTRAP,ANGULARJS,TOOLTIP,NG-REPEAT     2016-05-21 10:52:02

  Why Outsourcing .Net Services is a Growing Trend?

IT companies are focusing more on .net for application development. This is because; the .net platform empowers developers with a wide range of tools and libraries to create diverse applications in an easy and efficient manner. The dot net framework allows users i.e. developers, to design and develop applications that can interact with web services and a range of online devices. .Net programming language is richer than others in many contexts. It has several objects oriented features like proper...

   dot net services, outsourcing, .net, framework     2014-10-23 22:30:43

  Simple PHP paging class

Frequently in our web applications, we may have many records in the database to display. In order to imrpove loading speed and efficiency, we may need to display some records at a time, so we need to paginate the records. For example, if we have 1 million book records and when users want to view the book list, it's inefficient to display all the records on the same page, we may need to have some pagination to allow displaying a portion of the records such as 20 records per page. This is a simple...

   PHP,Paging,Class     2012-09-10 20:23:33

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