SEARCH KEYWORD -- Code coverage


  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

  Image lazy loading plugins on Github

Image lazy loading is a concept where images are getting loaded only when needed. It has been adopted in many web applications to reduce usage of bandwidth. When a web page is loaded in a web browser, not all the page elements would be visible in the view port, hence those resources(images, videos etc) don't need to be loaded.  Currently there are quite a few open source plugins on Github which can help achieve image lazy loading. Today we will introduce a few of them. Echo.js Echo.js is a ...

   JAVASCRIPT,OPEN SOURCE,WEB DEVELOPMENT,IMAGE LOADING     2017-04-22 01:16:04

  Create namespace in JavaScript

A namespace (sometimes also called a name scope) is an abstract container or environment created to hold a logical grouping of unique identifiers or symbols (i.e., names). An identifier defined in a namespace is associated only with that namespace. The same identifier can be independently defined in multiple namespaces. That is, the meaning associated with an identifier defined in one namespace may or may not have the same meaning as the same identifier defined in another namespace. Languag...

   JavaScript,namespace,example     2012-05-10 04:57:17

  Processing Unicode Data in Python - A Primer to Understand Non-English Data Processing

Introduction: Currently we live in a world where people of diverse cultures/backgrounds use electronic devices to express their ideas, do their daily work that earns them their daily bread, and entertain themselves using content that is created using their own language and so on. Naturally, in order to make all these things happen, any computational instrument, be it a laptop or a desktop computer, or a smartphone, or something else, should be capable enough to serve all of these things in a man...

   PYTHON,UNICODE,UTF-8,NON-ENGLISH DATA,ASCII CODE     2019-04-10 00:55:19

  jQuery 2.0 gives up IE 6/7/8

jQuery 2.0 is released after 10 months development. jQuery 2.0 is customized for modern web browsers and also considers about mobile devices. But one big change is that jQuery 2.0 will not be  compatible with old versions of IE and its size is 10% less than the version 1.9.1. The execution efficiency is higher as well. jQuery 1.9.x will still be maintained by jQuery team, they will also provide update for it. Those websites which want to be compatible with all browsers should not upgrade to...

   jQuery 2.0,IE support     2013-04-20 07:58:16

  Free PHP, HTML, CSS, JavaScript editor - Codelobster IDE

In this article, we suggest you to get acquainted with the free editor of web languages - Codelobster IDE. It is presented on the software market for a long time already, and it wins a lot of fans. Codelobster IDE allows you to edit PHP, HTML, CSS and JavaScript files, it highlights the syntax and gives hints for tags, functions and their parameters. This editor easily deals with those files that contain a mixed content. If you insert PHP code in your HTML template, then the editor correctly hig...

   IDE,CODELOBSTER,PHP,HTML     2019-07-27 09:37:14

  First Touch on OpenAI API

It’s been a while since ChatGPT launched, and I’ve been meaning to try out the OpenAI API. Recently, I finally took the plunge, so here’s a walkthrough of my initial experience using it. Objective: I’ve previously used ChatGPT’s interface for language translation tasks between Chinese and English. For this API experiment, I aimed to set up a simple translation function using the OpenAI API. Step 1: Getting the API Key First, to access the API, I created an OpenAI ac...

   TUTORIAL,API,TRANSLATION,OPENAI,FREE ACCOUNT     2024-11-11 22:25:07

  All I Know About Certificates -- Certificate Authority

One of the crucial steps in the TLS handshake is for the server to prove its identity to the client. While there is plenty of content explaining the principles of the handshake, there's less information about certificates, which are a critical component of TLS/SSL. This series of articles aim to explain what certificates are used for, how Google prevents others from impersonating Google, and why certificate issues frequently arise, among other topics. (Postscript: It took me a full 10 hours to w...

   CLIENTS,WEBSITE,CERTIFICATE,SSL CERTIFICATE     2024-07-26 22:22:28

  Load html content properly in iframe

When loading content in an ifrasme, there are normally two ways: loading with src or creating iframe dynamically and set content dynamically. In this post, we will talk about how to properly load content in a dynamically created iframe element, especially on how to fix some issue we faced while in Firefox. To create an iframe dynamically, we would normally use JavaScript and with below piece of cod: let iframe = document.createElement("ifrasme"); iframe.innerHTML = "this is some text"; document...

   IFRAME,HTML,BLANK,FIREFOX,FIX     2021-04-10 02:17:27

  Linus Torvalds apologizes for Linux 4.8 kernel bug

On Oct 2, Linus Torvalds proudly announced the release of Linux 4.8. But just days after the release, a bug was found in the kernel and Linus came out and apologized for this bug. I'm really sorry I applied that last series from Andrew just before doing the 4.8 release, because they cause problems, and now it is in 4.8 (and that buggy crap is marked for stable too). In particular, I just got this kernel BUG at ./include/linux/swap.h:276 and the end result was a dea...

   LINUX,LINUX KERNEL,NEWS,LINUS TORVALDS,BUG_ON     2016-10-07 03:46:17

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