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  How to write good requirements

Requirements are pretty ubiquitous in the embedded world. They are used to define tasks, help coordinate large development efforts, and to communicate the behavior of the desired end product between the developers and the customer. When done right, requirements can be very useful. Unfortunately, if you spend much time working in the embedded world you quickly discover that there are a lot of bad requirements. And then when you try to go fix them, you quickly discover that writing good req...

   Requirement gathering,Good requirement     2012-02-18 12:53:15

  Why is single threaded Redis so fast

Redis is a high-performance, in-memory key-value database. According to official test reports, it can support around 100,000 QPS (queries per second) on a single machine. However, Redis uses a single-threaded architecture in its design. Why does Redis still have such high performance with a single-threaded design? Wouldn't it be better to use multiple threads for concurrent request processing? In this article, let's explore why Redis has a single-threaded architecture and still maintains its spe...

   REDIS,SINGLE-THREADED,MULTI-THREADING     2023-02-28 05:16:22

  Speed Hashing

A given hash uniquely represents a file, or any arbitrary collection of data. At least in theory. This is a 128-bit MD5 hash you're looking at above, so it can represent at most 2128 unique items, or 340 trillion trillion trillion. In reality the usable space is substantially less; you can start seeing significant collisions once you've filled half the space, but half of an impossibly large number is still impossibly large. Back in 2005, I wondered about the difference between a checksum and...

   Speed hashing,Security,MD5     2012-04-07 10:35:15

  Code reviews in the 21st Century

There's an old adage that goes something like: 'Do not talk about religion or politics'.  Why?  Because these subjects are full of strong opinions but are thin on objective answers.   One person's certainty is another person's skepticism; someone else's common sense just appears as an a prior bias to those who see matters differently.  Sadly,  conversing these controversial subjects can generate more heat than light.   All too often people can get s...

   Code review,21 Centuary     2012-02-10 06:39:14

  As A Hottest Job Ever, What Should You Know As A Front End Web Developer?

The front end web developers are the openers for the visitors to visit the web page. It is also known as the client-side development, works predominantly with HTML, CSS, and Javascript. The tools and techniques are the important players of the front end web development. The developer must be aware of the updation of web technologies.The scope is evergreen with this technology as every company or business needs a website to showcase their profile. There are many objectives must be measured while ...

   FRONT END DEVELOPER,WEB DEVELOPERS,SOFTWARE DEVELOPERS,TOP SOFTWARE COMPANIES     2019-08-12 05:36:28

  Circumventing browser connection limits for fun and profit

A few days ago, this video hosted by metacafe popped up on digg, explaining how to increase site download times by tweaking your browser settings to increase connection parallelism. To explain why this works, let’s step back a bit to discuss how browsers manage server connections. In building any application, developers are often required to make ‘utilitarian’ choices. Pretentiously paraphrasing Jeremy Bentham, ‘utilitarian’ describes an approach that â...

   HTTP,Concurrent connection limit,Solution,AJAX     2011-12-14 13:01:02

  Stuff The Internet Says On Scalability For September 16, 2011

Between love and madness lies HighScalability:Google now 10x better: MapReduce sorts 1 petabyte of data using 8000 computers in 33 minutes; 1 Billion on Social Networks;Tumblr at 10 Billion Posts; Twitter at 100 Million Users; Testing at Google Scale: 1800 builds, 120 million test suites, 60 million tests run daily.From the Dash Memo on Google's Plan: Go is a very promising systems-programming language in the vein of C++. We fully hope and expect that Go become...

   Scalability,Go,Google,MapReduce,Muppet,M     2011-09-20 11:22:36

  Have you used these JavaScript libraries before?

Are you a vanilla JavaScript developer or a JavaScript library lover?  If you are a vanilla JavaScript developer, please feel free to step away silently because you may not get what you want, but if you are a library or framework lover, please bookmark this page as what we list below are what you may use in the future. There are tons of JavaScript libraries created to ease the headache of developers who have to deal with different browsers on different devices. You may use some of them befo...

   JavaScript,Framework,Library     2014-09-27 22:06:55

  Why I love Common Lisp and hate Java

“Common what?” is a common reply I get when I mention Common Lisp. Perhaps rightly so, since Common Lisp is not all that common these days. Developed in the sixties, it is one of the oldest programming languages out there. In its heydays it was used mostly for Artificial Intelligence research at MIT, Stanford, Carnegie Mellon and the like, and therefore has a lingering association with AI. People not in AI shy away from Lisp. Common Lisp is a powerful and versatile program...

   Lisp,Java,Comparison,Common Lisp     2012-01-30 05:48:16

  5 Ways to Boost MySQL Scalability

There are a lot of scalability challenges we see with clients over and over. The list could easily include 20, 50 or even 100 items, but we shortened it down to the biggest five issues we see.1. Tune those queriesBy far the biggest bang for your buck is query optimization. Queries can be functionally correct and meet business requirements without being stress tested for high traffic and high load. This is why we often see clients with growing pains, and scalability challenges as their site becom...

   MySQL,Scalability,Methods,Implementation,Practice     2011-10-18 02:57:27

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