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  An easy way to log client side information to server

JavaScript debug is a very troublesome thing in web application development. Because many web browsers will not notify you if there is any error in the JavaScript codes you write. They just silently fail and block the following codes execution. In order to debug JavaScript codes, we need a good log mechanism which will help us log the error information,, we often need to log errors in JavaScript codes to server for debug purpose in a production web application, What should we do? The first ...

   JavaScript log, Ajax,Image,Debug     2012-12-30 09:16:50

  Different ways of handling concurrent job in GoLang

GoLang provides very good support of concurrency and the way to make some code to run concurrent is pretty simple and straightforward. Adding a simple go before a normal function call will make the function call asynchronous. In real cases normally people would concurrently run some jobs to improve the speed and efficiency. One important part of running jobs concurrently is about aggregating results so that the consequent function call would be able to proceed. There are multiple ways handling t...

   COMPARISON,WORKER POOL,WAITGROUP,CONCURRENT     2021-05-15 11:13:53

  Do designers need code?

So many problems in software occur because programmers and designers don't communicate well all the time. Why don't more designers learn to code themselves or have engineers build abstractions better suited to them? People's minds work in different ways, they can process thoughts differently, solve problems in completely different but equally valid ways. It's a mistake to assume everyone should possess the same skill set.  Also not everyone should be a full stack engineer although full stac...

   Design,Coding     2014-01-07 06:22:52

  Why Most of us Get Confuse With Data Quality Solutions and Bad Data?

How to fix this misunderstanding is what Big Data professionals will explain in this post. The C-level executives are using data collected by their BI and analytics initiatives to make strategic decisions to offer the company a competitive advantage. The case gets worse if the data is inaccurate or incorrect. It’s because the big data helps the company to make big bets, and it impacts the direction and future together. Bad Data can yield inappropriate results and losses. Some interesting ...

   BIGDATA     2018-02-21 06:01:35

  + operation on JavaScript objects

In JavaScript, there are two types of values: primitive and object. Primitives consist undefined, null, boolean, number and string. Other values such as array and function are objects. When applying + operation on different type of values, there would be three kinds of type conversion. Primitive conversion Number conversion String conversion There three type conversions have corresponding abstract operations in JavaScript: ToPrimitive(), ToNumber(), ToString(). For number additi...

   JAVASCRIPT,PROGRAMMING     2018-10-12 22:19:12

  CASSANDRA data model

Cassandra is an open source distributed database, it combines dynamic key/value and column oriented feature of Bigtable. Features of Cassandra are: Flexible schema, no need to design schema first, it's very convenient to add or delete strings Support range search on keys High usability, extensible. The single node error will not affect the cluster. We can think Cassandra's data model as a 4 or 5 dimensional Hash. COLUMN Columns is the smallest data unit in Cassandra, it is a 3 dimensional data...

   Cassandra,database,sort     2013-06-08 22:07:40

  Life in Apple design team

While in mentioning about Apple, everyone of us will think of the amazing products shipped out by Apple such as iPhone and iPad. We are all impressed by its smooth design and handy user experience. But as a outsider do you know the story behind the amazing design of Apple? Apple has a team of world class designers and they are leading the fashion of design. What's the life in Apple's design team? Ben Williamson from Apple shared one story of him which can give us some hints on what the life is ...

   Apple,Design,Perfect     2014-01-02 07:00:27

  What’s making Drupal gain momentum among government organizations?

Drupal has come up as a big splash in the world of Website development. Whether it’s an informative website or an e-commerce store, Drupal has been successfully utilized for meeting customized web requirements. It’s not surprising to find entrepreneurs, hailing from different business verticals, choosing Drupal for powering their websites. Joining this group of elite Drupal users are the representatives of government organizations. The noticeable popularity of Drupal has indeed made ...

   Drupal     2014-03-12 08:15:43

  Tips for improving PHP efficiency

0. Using single quote to replace double quote to enclose string literal, this will be a bit faster. Because PHP engine will search variables in double quoted string. 1. If a method in class can be declared as static, then make it static, this will be 4 times faster. 2. $row["id"] is 7 times faster than $row[id] 3. echo is faster than print, and you should use multiple parameters instead of string concatenation, i.e use comma(,) instead of dot(.) to concatenate string. For example echo $str1,$str...

   PHP, efficiency, tips     2012-10-01 19:39:06

  Install and setup Kafka on Windows

Kafka has become a very popular distributed message delivery service which decouples different services while making message delivery between service easy, fast and reliable. In this post, we will walk through how to install and set up Kafka on Windows. Pre-requisite Java Apache ZooKeeper Installation Go to Kafka's download link and download the latest stable release, we downloaded 2.2.0 as of this writing. After downloading, copy the installation file to some folder and unzip it.  Sinc...

   KAFKA,STREAM,USER GUIDE     2019-06-01 02:12:07

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