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  Encrypting and decrypting PGP file or text on MacOS

When doing data exchange among different parties, there is a frequent need of encrypting data or file and sending it to partner and asking partner to use corresponding key to decrypt the data or file. A famous way of exchanging data is using asymmetric keys where no secret key needs to be shared. One party can just use the public key shared by partner to encrypt the data and the other party uses the private key to decrypt the data. Today, we will introduce how to use PGP to encrypt and decrypt d...

   TUTORIAL,ENCRYPTION,DECRYPTION,PGP,GPG     2020-10-29 05:06:09

  The difference between System.load and System.loadLibrary in Java

When writing code using native library in Java, normally the first step is loading some native library. static{ 　　System.load("D:" + File.separator + "Hello.dll"); } JDK provides two ways to load libraries: System.load(String filename) System.loadLibrary(String libname) This post will try to explain the differences of these two ways. According to Java Doc on System.load(), it has below description. Loads the native library specified by the filename argument. The filename a...

   NATIVE,JNI,JAVA,SYSTEM.LOAD,SYSTEM.LOADLIBRARY     2019-02-05 05:49:28

  Practice of using spinlock instead of mutex

Spinlock and mutex are two important concepts in multithreading programs. They are used to lock some shared resource to prevent concurrent access which may affect data consistency. But they do have differences, what are the differences? when should we use spinlock instead of mutex? The Theory In theory, when a thread tries to lock a mutex and it does not succeed, because the mutex is already locked, it will go to sleep, immediately allowing another thread to run. It will continue to sleep until...

   Spinlock,Mutex,Concurrency     2014-04-19 21:54:12

  How does Class box get 1 million users with only 4 people?

"Class box" is an app which helps students create course plan developed by 4 Chinese. This app was created in 2012. They get over 1 million users with only 4 people. How do they make this? The co-founder of "Class box" Tianfang Li explains this on Zhihu. Here is what he said: About millions of users, in the mobile Internet era what we need to do is just find a good entry point, rapid iteration and with a little luck, a small team or even an independent developer can make millions user level prod...

   class box,team size,sillicon valley     2013-04-03 08:08:21

  What is Hystrix and How does Hystrix work

Background In distributed systems, there is one effect where the unavailability of one service or some services will lead to the service unavailability of the whole system, this is called service avalanche effect. A common way to prevent service avalanche is do manual service fallback, in fact Hystrix also provides another option beside this. Definition of Service Avalanche Effect Service avalanche effect is a kind of effect where the service provider fails to provide service which causes t...

   AVALANCHE EFFECT,HYSTRIX,DISTRIBUTED SYSTEM     2019-02-04 06:00:38

  Things to Look for in Microsoft .NET Framework 4.7

The .NET Framework 4.7 is the updated version of the .NET Framework 4.6.2.  It can run along with earlier versions of the .NET Framework. On installation it appears as an update for Microsoft Windows under the Installed Updates item in Control Panel. The improvements in the.NET Framework 4.7 includes: High DPI support for Windows Forms applications on Windows 10 Touch support for WPF applications on Windows 10 Enhanced cryptography support Performance improvements .NET Framework Documenta...

   ASP.NET, ASP.NET FRAMEWORK     2017-07-18 05:55:20

  Check mobile device using JavaScript

Sometimes developers want to know whether the user is using a mobile browser or a desktop browser so that they can build corresponding user experience. Although in many cases responsive web design would help solve component alignment issues, there are performance related considerations in some cases where some code should not be ran or some feature should not be available if user is on mobile browser. or vice versa This post will summarize a few ways which are commonly used to check whether a us...

   CHECK,MOBILE BROWSER,MOBILE DEVICE,JAVASCRIPT     2021-10-02 01:36:16

  When You Should Consider Moving From HTML to WordPress Platform?

No matter, you want to introduce big changes in your HTML website or a minor one, you'll have to make the edits in your site's files and then upload all of them by connecting to your FTP server. Now, this can be a pretty time-consuming and a daunting prospect for business owners who requires to make changes to the site on a regular basis. You should think about moving from your static HTML to some dynamic platform that provides you the flexibility to make the process of content editing become a ...

   HTML to Wordpress, HTML to Wordpress Conversion, Convert HTML to Wordpress,     2014-07-29 07:16:30

  How To Make Sure Your Next Date Isn’t A Psychopath Via Online Checks

Online dating is pretty much the norm these days when it comes to looking for love, but it can't be denied there’s still a bit of a stigma attached and most certainly an air of mystery. After all, until you meet face-to-face there’s no real way of knowing who they are. It’s putting your faith in a stranger and, of course, that’s more often than not absolutely fine. Over the years though there have been a number of horror stories and it’s enough to put even the most...

   PROMOTION,DATE     2019-06-12 10:44:11

  Testing LLM on MacOS with Llama

As a programmer, I always believe that the best way to understand something is by actually getting the hands dirty by testing it out ourselves. In past few years, with the introduction of ChatGPT, AI and associated technologies such as LLM come to a hot spot in tech industry and there are lots of platforms available and different models coming out for people to test out. This post I will demonstrate a step-by-step guide on how to run Llama(a Meta LLM) on a MacOS machine with a model. This will j...

   GUIDE,LLAMA,LOCAL,HUGGING FACE,QWEN     2024-11-17 13:36:28

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