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  A journey to investigate a goroutine leakage case

In Go, creating goroutines is straightforward, but improper usage may result in a large number of goroutines unable to terminate, leading to resource leakage and memory leaks over time. The key to avoiding goroutine leaks is to manage the lifecycle of goroutines properly. By exporting runtime metrics and utilizing pprof, one can detect and resolve goroutine leakage issues. This post will go through one real case encountered by the author. The author maintains a service that connects to a targe...

   TIMEOUT,SSH,GUIDE,DEBUG,LEAK,GOROUTINE,PPROF,GOLANG     2024-03-16 11:00:23

  Design Secrets for Engineers

If you are a designer like me, you must be asked on a regular basis to “make it look pretty.” The request can stroke your designer ego, making you feel like a design rockstar with super powers to make this world a more beautiful place. This is especially true at startups, where you are one of the few, maybe the only designer there. However, it can also be really annoying–almost degrading at times. Thoughts like “why the hell can’t engineers do this on their o...

   Design,UI,pretty,engineer,designer font     2011-10-24 11:18:25

  So you want to write JavaScript for a living?

What do you need to know if you are interviewing for a job that involves Javascript development? What kind of expectations do employers have of candidates now that the state of client side development has been changed with the rise of asynchronous JavaScript and the often slick, supporting interfaces? These were questions I was asking myself after a friend pointed me to an interesting job posting over at Meebo that included some JavaScript puzzlers on logical operators, DOM odditi...

   JavaScript,Career,Skills,Knowledge     2011-10-22 12:53:11

  Static Code Analysis

The most important thing I have done as a programmer in recent years is to aggressively pursue static code analysis.  Even more valuable than the hundreds of serious bugs I have prevented with it is the change in mindset about the way I view software reliability and code quality.It is important to say right up front that quality isn’t everything, and acknowledging it isn’t some sort of moral failing.  Value is what you are trying to produce, and quality is only one a...

   Static code,Analysis,Quality,Microsoft 360,Value     2011-12-24 06:50:18

  The First Bite on etcd Code

Etcd, one of the crucial components of Kubernetes. If APIServer is the heart, then etcd is the blood vessel that sends the end state of Kubernetes resources to various “organs”, providing high-speed, stable storage, and supporting APIServer’s high load performance. What if the etcd is not working properly? Just the condition as someone has a vascular disease. The deeper you know about them, the better diagnose you can make when issues occur. from unspl...

   SOURCE CODE,ETCD     2022-02-12 01:03:14

  Python internals: how callables work

[The Python version described in this article is 3.x, more specifically - the 3.3 alpha release of CPython.] The concept of a callable is fundamental in Python. When thinking about what can be "called", the immediately obvious answer is functions. Whether it’s user defined functions (written by you), or builtin functions (most probably implemented in C inside the CPython interpreter), functions were meant to be called, right? Well, there are also methods, but they’re not very ...

   Python,Callable work,Rationale     2012-03-24 05:20:27

  How to Ace a Google Interview

Imagine a man named Jim. He's applying for a job at Google. Jim knows that the odds are stacked against him. Google receives a million job applications a year. It's estimated that only about 1 in 130 applications results in a job. By comparison, about 1 in 14 high-school students applying to Harvard gets accepted. Jim's first interviewer is late and sweaty: He's biked to work. He starts with some polite questions about Jim's work history. Jim eagerly explains his short career. The intervi...

   Google,Interview,Questions and answers,Job     2011-12-26 09:17:36

  Introducing JavaScript native file management

TL;DR The Mozilla Platform keeps improving: JavaScript native file management is an undergoing work to provide a high-performance JavaScript-friendly API to manipulate the file system. The Mozilla Platform, JavaScript and Files The Mozilla Platform is the application development framework behind Firefox, Thunderbird, Instantbird, Camino, Songbird and a number of other applications. While the performance-critical components of the Mozilla Platform are developed in C/C++, an increasing number o...

   JavaScript,File,Local file,Firfox,Mozilla     2011-12-06 09:05:48

  Be Aware of these 10 mistakes while designing Your Mobile App!

So you have finally decided to enter the world of technology and you are going to design an application for your business. The time has become when you have to give all the nitty-gitty grins a look and design your own mobile app for promoting your business online. Well when you have finally decided to design your mobile application, here are some mistakes that you are not allowed to make. Have a look:   Do Not Start Designing Your App Without Wireframes Normal 0 false ...

       2014-12-11 02:12:02

  10 Ways to Be a More Productive Web Developer

We could all be more productive. There are many things we can do — some big, some small — that will enhance the way we work and improve the outcomes of our activities.Although I can’t promise that I’ll be able to help you cure all your productivity ailments, I do hope that I can provide you with a few useful, solid tips on streamlining your web development workflow and making every part of the development cycle move quickly and smoothly.Follow each one of these tips a...

   Ways,Efficiency,Web development,API,Fram     2011-09-26 11:25:29

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