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Displaying posts with tag: Web Development (reset)
15 Best Visual Studio Code Extensions For Web Development

Visual studio code, arguably the best code editor to use in present time. Due to its wide range of extensions and support from Microsoft this editor is widely adopted.

Visual studio code is built on top of open source Monaco editor by Microsoft. This project receives around 14k stars in Github.

Visual studio code offers a wide range of extensions. Here is how to install the extension.

Press SHIFT+COMMAND (or Windows)+X or just click on the extension icon of visual studio code. Search for the extension and press install.

Here I am listing down 15 best visual studio code extension for web development. The choices of the …

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Jquery Duplicate Fields Form Submit with PHP

This tutorial explains How to submit jquery duplicate/clone field values to form with PHP.  In this example we are going to provide very simple example and using existing jquery plugin, so here we are using relCopy.js jquery plugin to duplicating the existing field.


                                             Download                    …

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How to Manage Session using Node.js and Express

Session handling in any web application is very important and is a must-have feature, without it, we won’t be able to track user and it’s activity.

In this article, I am going to teach you how to handle Session in Node.js. We will use express as a framework and various other modules such as body-parser to handle form data.

YOUTUBE DEMO DOWNLOAD

At the time of writing article, the latest version of Express is 4.16.4.

What we are buiding

To demonstrate Session handling in Node, I have developed a basic Log-in and log-out System. In this User can log-in by providing their email, and that email will be used for further Session tracking. Once User log-out, Session will be destroyed and User will be redirected to home page.

Creating Node …

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The MariaDB Foundation: A turning point for MySQL

Back when Sun Microsystems was setting, some of the programmers who had been involved with the popular and well-known open source MySQL database started a fork of the project called MariaDB.

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Simple jQuery: how to validate IPv4 addresses and netmasks

Unfortunately jQuery doesn’t come with default form validation to check for ip-addresses or subnet masking. So without a long winded explanation here’s the code. Just include this as a separate JS file like the rest of your page’s JS.

// 'ipv4': IPv4 Address Validator
$.validator.addMethod('ipv4', function(value) {
    var ipv4 = /^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/;    
    return value.match(ipv4);
}, 'Invalid IPv4 address');

// 'netmask': IPv4 Netmask Validator
$.validator.addMethod('netmask', function(value) {
    var mask = /^[1-2]{1}[2,4,5,9]{1}[0,2,4,5,8]{1}\.
[0-2]{1}[0,2,4,5,9]{1}[0,2,4,5,8]{1}\.
[0-2]{1}[0,2,4,5,9]{1}[0,2,4,5,8]{1}\.
[0-9]{1,3}$/;    
    return value.match(mask);
}, 'Invalid IPv4 netmask');

You can use it like this.

$("#myform_here").validate({
    rules:{
        ipaddress:{
            required:true,
            ipv4:true
        },
        netmask:{ …
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Welcome to Insatiable Demand

In early 2006 Paul Hurley (ideeli’s CEO) and I (Mark Uhrmacher, CTO) were thinking about a new business. We had the idea to create a community based around great deals for Women’s fashion products where we saw a great deal of potential for great content and product sales. Now, over five years later, we’ve realized much of that vision. Our business success has been chronicled over the years in several places (see here and here). Though we’re very proud of our achievements there, that isn’t what this blog is about.

Insatiable Demand is about a mostly untold story. Over the past five-plus years we’ve built a phenomenal technology platform and team. From two people and three servers to a 70 person team and a 100 instance production environment, …

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Why is my database slow?

Not part of my Don’t Assume series, but when a client states “Why is my database slow”", you need to determine if indeed the database is slow.

Some simple tools come to the rescue here, one is Firebug. If a web page takes 5 seconds to load, but the .htm file takes 400ms, and the 100+ assets being downloaded from one base url, then is the database actually slow? Tuning the database will only improve the 400ms portion of 5,000ms download.

There some very simple tips here. MySQL is my domain expertise and I will not profess to improving the entire stack however perception is everything to a user and you can often do a lot. Some simple points include:

  • Know about blocking assets in your <head> element, e.g. .js files.
  • Streamline .js, .css and images to what’s needed. .e.g. download a 100k image only to resize to a thumbnail via style …
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Upcoming book – Expert PHP and MySQL

This month will see the release of the book Expert PHP and MySQL which I was a co-author of. Initially this will be available for purchase in PDF format from the Wrox website and I am hopeful this will be available in print format for the MySQL Users Conference.

More then just your standard PHP and MySQL there is detailed content on technologies including Memcached, Sphinx, Gearman, MySQL UDFs and PHP extensions. We will be posting more information at www.ExpertPhpandMySQL.com. You can download a PDF version of Chapter 1 Techniques Every Expert Programmer Needs to Know.

The book includes the following content:

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memcached and the client: Database UDFs

NorthScale's own Patrick Galbraith has, for many years now, authored and maintained the MySQL, and now Drizzle, UDFs for memcached.  Last week, Patrick took this one step further with the latest release, version 1.1, which now includes support for "check and set" (a.k.a. CAS) operations.  

User Defined Functions are available for a number of different databases.  This allows some kind of stored procedure language or other triggers to execute other code imported into the DB.  In the case of the memcached UDF, this means giving stored procedures the ability to call memcached operations.

The general idea here is pretty simple.  Most applications start with a database, though it's always possible to use web services or flat files.  Regardless of where the data is persisted, to keep the cache always up to date with the System of …

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Some Drupal observations

I had the opportunity to review a client’s production Drupal installation recently. This is a new site and traffic is just starting to pick up. Drupal is a popular LAMP stack open source CMS system using the MySQL Database.

Unfortunately I don’t always have the chance to focus on one product when consulting, sometimes the time can be minutes to a few hours. Some observations from looking at Drupal.

Disk footprint

Presently, volume and content is of a low volume, but expecting to ramp up. I do however find 90% of disk volume in one table called ‘watchdog’;


+--------------+--------------+--------------+-------------+--------+
| table_schema | total_mb     | data_mb      | index_mb    | tables |
+--------------+--------------+--------------+-------------+--------+
| xxxxx        | 812.95555878 | …
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