The mystery of Duqu Framework solved

The Quest for Identification In my previous blogpost about the Duqu Framework, I described one of the biggest remaining mysteries about Duqu – the oddities of the C&C communications module which appears to have been written in a different language than the rest of the Duqu code. As technical experts, we found this question very interesting and puzzling and we wanted to share it with the community. The feedback we received exceeded our wildest expectations. We got more than 200...

   Duqu,Code mystery,OO C,C++     2012-03-21 09:29:18

  Hadoop or Spark: Which One is Better?

What is Hadoop? Hadoop is one of the widely used Apache-based frameworks for big data analysis. It allows distributed processing of large data set over the computer clusters. Its scalable feature leverages the power of one to thousands of system for computing and storage purpose. A complete Hadoop framework comprised of various modules such as: Hadoop Yet Another Resource Negotiator (YARN MapReduce (Distributed processing engine) Hadoop Distributed File System (HDFS) Hadoop Common Thes...

   COMPARISON,HADOOP,SPARK     2018-11-22 07:08:57

  How DNS lookup works

When accessing a website, a domain name would be needed normally. To get to the actual web server, the domain name must be mapped to an actual IP address and the IP address will be used to reach the web server. The process of finding the IP address from a domain name is called DNS lookup.  How does DNS lookup work? There are tons of domain name and IP address around the world, there must be some well-designed architecture to support fast lookup. This post will explain how this works. DNS Se...

   DNS,DNS LOOKUP     2022-09-09 23:11:03

  The details and analysis of capturing gRPC packets

Introduction If you're only using gRPC at the application layer, I believe studying the examples on the gRPC official website is sufficient. However, when planning to extensively use gRPC within a team, you will face many challenges, such as authentication schemes between services, routing solutions for multi-region services, and compatibility solutions with existing RESTful services. I recently realized that applying a technology stack requires mastering a wealth of information about that stack...

   GRPC,GOOGLE     2024-01-14 05:59:13

  10 Things Beginner Developers Should Know

If you are a novice developer, it might be confusing about where you should start, because the field is broad and provides many options for you. There are so many questions you might ask yourself, such as “What programming language should I learn?” or “Should I also know front-end, or only back-end?” And I am sure there are much more than that. Well, in order for you to be able to start with an advantage against the others, I’ve decided to help you start your ...

   Advice,Software developer,Beginner     2011-12-29 01:41:04

  Why I Won’t Hire You

I will be very honest with you in this post. Most interview articles only show obvious mistakes, as if most people don’t know showing up late is bad form. I will tell you the things I didn’t really know about until I was the one interviewing, and interviewing for a variety of positions and person-types. No interview prep article ever prepared me in the right way for how interviewers really think. That is what I will be sharing with you today. When you first walk in...

   Career,Hire,Preparartion,CV,Resume     2012-01-11 04:38:19

  CSS Selector for Web Scraping

Creating a web scraper is no easy task. This is because it requires precision to identify the specific data points that we intend to collect for the end goal we are working towards.  Whether we are looking to create a marketing content database or analyze market trends, the last thing we need from our scraper is for it to return a lot of unnecessary data that will not help our cause. To avoid the inconvenience of going through huge amounts of data to get what we requested, it is crucial to ...

   CSS,WEB DESIGN,SELECTOR     2023-02-20 07:32:53

  Set up Superset on ubuntu 16.04 LTS

Apache Superset (incubating) is a modern, enterprise-ready business intelligence web application. Compared with business-focused BI tool like Tableau, superset is more technology-navy. It supports more types of visualization and able to work in distributed manner to boost the query performance. Most importantly, it is free of charge! An example dashboard: Let’s go and set it up. Create a virtualenv Assume Anaconda is installed for python management. # create a virtualenv with python 3.6 co...

   TUTORIAL,UBUNTU,SUPERSET     2019-10-19 21:34:55

  Is programmer really profession for youth only?

- dedicated to the new programmers just into the workplace.

One young Chinese friend asked me: is programmer meant only for less experienced youth? Should I consider transition once if I work on it until 30 years old?

   Programmer,Youth,Product,Project,Career,Analysis     2012-03-18 07:06:44

  Why Objective-C is Hard

As an active member of "The Internet" and vocal Objective-C coder, I get a lot of questions surrounding the language. They're often framed around thinking about learning the language or trying to write an app, but they also usually involve a phrase like "Objective-C looks really hard" or "what are all those minus signs about?" Both of these are pretty good questions, and I'd like to address why someone might be more hesitant to jump into iOS or OS X development compared to, say, Ruby or J...

   Objective-C,difficult,hard,reason,analysis     2012-03-07 05:11:28