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  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

  Get vs Post in HTML form

In HTML, one can specify two different submission methods for a form. The method is specified inside a FORM element, using the METHOD attribute. The difference between METHOD="GET" (the default) and METHOD="POST" is primarily defined in terms of form data encoding. The official recommendations say that "GET" should be used if and only if the form processing is idempotent, which typically means a pure query form. Generally it is advisabl...

   Get,Post,HTML,form,data submission     2011-05-10 11:12:04

  Update & Delete Kubernetes resources in one-line command

It recently troubles me that my GKE cluster is managing more and more resources and causing difficulties in maintenance, one of which involves how to delete resources properly. Next, I will explain step by step the difficulties I encountered in my work and how I finally used the combination of bash commands and kubectl to implement the edition of Kubernetes objects through one-line command. In general The following are the basic operations that almost every Kubernetes user takes. Check ðŸ‘...

   KUBERNETES     2020-11-01 04:16:47

  Useful Bash Scripts

Many people hack together shell scripts quickly to do simple tasks, but these soon take on a life of their own. Unfortunately shell scripts are full of subtle effects which result in scripts failing in unusual ways. It's possible to write scripts which minimise these problems. In this article, I explain several techniques for writing robust bash scripts. Use set -u ...

   Linux,Shell,Bash,Command,Robust     2012-01-15 10:28:00

  Writing robust shellling scripts

Many people hack together shell scripts quickly to do simple tasks, but these soon take on a life of their own. Unfortunately shell scripts are full of subtle effects which result in scripts failing in unusual ways. It's possible to write scripts which minimise these problems. In this article, I explain several techniques for writing robust bash scripts. Use set -u ...

   Robust,Shell script,Set,Commands     2012-03-19 13:25:26

  Top Ten Tips for Correct C++ Coding

Brian Overland, long-time Microsoft veteran and author of C++ Without Fear: A Beginner's Guide That Makes You Feel Smart, 2nd Edition, shares 10 of his most hard-earned, time-saving insights from decades of writing and debugging C++ code.My first introduction to the C family of languages was decades ago (yes, I know this dates me horribly). Later I learned C++. I wish someone back then had steered me around the most obvious potholes; it might have saved me hundreds of frustrating hours.I ca...

   C++,Tips,Top,Ten,Magic number,Integer di     2011-09-03 10:58:35

  VIM Plugins for C/C++ developers

Following up on my previous post on Essential Vim Plugins for Web Developers, I have decided to tell you about the awesomeness of the C / C++ plugin for Vim in this article.Now to get things going, let’s start by thinking what are the basic stuffs that you would be carrying out as a C / C++ developer? Include header files, some functions, loops, conditional statements and a main function. These are some repetitive boring tasks that you would rather have someone else do it for you. We...

   Plugin,Vim,C,C++,developer,Vim for C     2011-09-28 09:23:55

  Fear of Ignorance

This past week, I was interviewing a candidate for a VP role along with two of our engineering leads. Everyone in the room excluding myself was classically “technical” – they could write code, had experience solving hard software problems and a background in computer science. I wrote my last line of PHP in 2004, and it had to be rewritten by a real programmer within 6 months.During the interview, we had the following exchange (due to an imperfect memory, I’ll ...

   Leader,Team,Technical,Leadership,Ignorence     2011-11-21 10:03:03

  Unfortunate Python

Python is a wonderful language, but some parts should really have bright WARNING signs all over them. There are features that just can't be used safely and others are that are useful but people tend to use in the wrong ways. This is a rough transcript of the talk I gave at my local Python group on November 15, with some of the audience feed back mixed in. Most of this came from hanging around the Python IRC channel, something I highly recommend. [update 2011-12-19: improved "array" cr...

   Python,Defects,Deprecated methods,Warning     2011-12-20 08:27:36

  The Great Tech War Of 2012

From left: The late Apple cofounder Steve Jobs, Facebook CEO Mark Zuckerberg, Google CEO Larry Page, and Amazon CEO Jeff Bezos. | Photos courtesy of David Paul Morris/Getty Images (Jobs); Justin Sullivan/Getty Images (Zuckerberg); Chip East/Reuters (Page); Mario Tama/Getty Images (Bezos).Gilbert Wong, the mayor of Cupertino, California, calls his city council to order. "As you know, Cupertino is very famous for Apple Computer, and we're very honored to have Mr. Steve Jobs come here tonight ...

   2012,Tech war,Facebook,Apple,Google,Amazon,Tablet,Cloud,Analysis     2011-10-17 11:06:25

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