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  Writing API clients in Perl and Python

I recently released a couple of API clients for the Ge.tt file sharing service, one in Perl and one in Python. (I am just a fan of the service, not an employee or contractor.) I would judge myself an "intermediate" pythonista mostly due to inexperience. It's a culture shock coming from a background of CPAN. The old joke is that Perl is just a life support system for CPAN and that is arguably true, but I am here to tell you: you may not appreciate how good Perl hackers have it with respe...

   API,Perl,Python,API Writing,Pattern     2011-12-23 08:02:38

  Google releases new app to improve the accuracy of indoor positioning

Google Maps, Bing Maps, and some map providers have offered indoor map service such as in  the airport, major shopping malls and stadiums for some time. The problem is that these indoor maps can not precisely tell you which floor you are on a map, the GPS obviously can not work very well in this environment, WiFi and GPRS positioning is not very precise. Google announced the improvement program of Google Maps for accurate indoor positioning. The current owners of these places will cooperat...

   Google Map,Indoor service,Positioning     2012-04-08 09:46:53

  A handbook on the first day of joining a new internet company as BE engineer

When joining a new internet company, there might be lots of things need to be done to get ready for taking new challenges. These include both culture and tech preparation. in this post, we would focus on how to prepare the first day technically. The first thing to do is to get your laptop or your work machine up, these involves lots of tool setup and accesses. Normally there are three major task categories. Access As an engineer, there are lots of accesses needed to access different resources wi...

   TIPS,CAREER ADVICE,ONBOARDING     2021-12-11 21:32:10

  User experience : Exception handling

Exception handling is the process of handling emergencies or unpredictable operational errors. The specific time of the occurrence of unexpected events and the actual consequences of the specific situation are difficult to predict. How to handle this unexpected crisis is also related to the user experience of your users. Let's first look at how some famous products deal with unexpected exception encountered by users:1. Goodyear tires can automatically expand when leaking.Tire blast is one of the...

   User experience,Exception handling     2013-04-06 05:05:04

  Check whether a remote server port is open on Linux

As a system administrator or network engineer or application developer, there is a need to check whether a port on remote server is open so that you can tell whether the service under check is running or not. In this post, we would cover a few methods to check whether a remote server port is open or not on Linux. telnet telnet is the most frequently used command on both Windows and Linux to check port. The simple usage for this command is  telnet [host] [port] When the port is open, the o...

   LINUX,TELNET,PORT,NC,NMAP     2017-12-23 11:45:20

  Signature sign/verification demo in Java

Digital signature is commonly used in areas where data authentication and integrity are required. It is extremely important to have signature while transferring sensitive data from one peer to other peers through network since there might be malicious applications or man-in-the-middle attacks which may alter the data along the way. Java provides some APIs to generate and verify digital signature. One important class is Signature.  When generating the signature, a private key needs to be pa...

   SECURITY,JAVA,SIGNATURE     2015-11-21 09:48:12

  Telecom elements in WeChat

As an engineer who spends much time on focusing on WeChat like applications(Skype, Fring, Viber, Kik Messenger, WhatsApp, Talkbox, LINE, Kakao Talk) , I would like to share with you the telecom element in WeChat to show the inheritance and integration of traditional telecom services in the Internet service and applications.First, WeChat is an application to send messages, the fully IP-based messaging capabilities may replace the traditional telecom services such as SMS, MMS and VMS ,This is ver...

   WeChat,Telecom operator     2013-04-13 20:29:46

  How Cloud Technologies Are Taking Over the World

Cloud technologies are some of the biggest accelerators of innovation today. The demand for increased speed and service delivery is driving the adoption and development of cloud platforms across industries. Gartner forecasts that the global public cloud service market will reach US$331.2 billion (S$455.83) in 2022, enjoying a 12.6% compounded annual growth rate. In Southeast Asia alone, it is estimated to reach US$40.32 billion (S$55.59 billion) by 2025 with a growing adoption among small and m...

   CLOUD,CLOUD COMPUTING     2019-10-18 12:12:12

  Fix issue docker-credential-desktop not installed or not available in PATH on Mac

Sometimes you may encounter below issue while running docker-compose on MacOS. Traceback (most recent call last): File "docker-compose", line 6, in <module> File "compose/cli/main.py", line 71, in main File "compose/cli/main.py", line 127, in perform_command File "compose/cli/main.py", line 1085, in up File "compose/cli/main.py", line 1081, in up File "compose/project.py", line 527, in up File "compose/service.py", line 354, in ensure_image_exists File "compose/service.py",...

   MACOS,DOCKER,DOCKER-COMPOSE     2020-06-23 03:25:16

  Huateng Ma becomes the richest person in China

On 22 July, Licai Zhoubao, a famous wealth management media in China, released a ranking about Chinese most richest people. In this ranking, Tencent CEO, Huateng Ma for the first time becomes the richest person in China with 46.7 billion RMB(around  $7.6 billion), his wealth was 35.4 billion RMB(around $5.76 billion) last year. That means his wealth increases 11.3 billion RMB($1.84 billion) in one year. In 2012, Tencent Corp had a revenue of 43.9 billion RMB(around $7.15 billion), which inc...

   Tencent,WeChat,Huateng Ma     2013-07-22 08:55:13

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