How Multiple Server Hosting impacts your websites uptime

This article describes the technology behind multiple server hosting and how you may utilize it to maximize your site's security and uptime

Hosting of web sites has essentially become a commodity. There is very little distinguishing one hosting company from the next. Core plans and features are the same and price is no longer a true determining feature. In fact, choosing a host based on the cheapest price can be more expensive in the long term with respect to reliability issues and possible loss of sales as a result of website downtime.

Selecting a host from the thousands of providers and resellers can be a very daunting task, which may result in a hit and miss approach. But although hosting may have become a commodity, one distinguishing feature that you must always look out for is reliability.

At the heart of any hosting company's reliability is redundancy. This ensures that if a problem exists at one point, there will be an alternative which ensures continuity as seemlessly and transparently as possible.

Most hosts do employ redundant network connections. These are the high speed pipes that route data from the server to your web browser. But, redundant 'multiple web servers' have been extremely rare and very expensive, requiring costly routing equipment which has previously been used only in mission critical applications of Fortune 500 companies.

However, a very neat but little known Domain Name Server(DNS) feature called 'round robin' allows the selection and provision of a particular IP address from a 'pool' of addresses when a DNS request arrives.

To understand what this has to do with server reliability it's important to remember that the Domain Name Server (DNS) database maps a host name to their IP address. So instead of using a hard to remember series of numbers (IP address) we just type in your web browser www.yourdomain.com, to get to your website.

Now, typically it takes at at least 2 to 3 days to propagate or 'spread the word' of your DNS info throughout the internet. That's why when you register or transfer a domain name it isn't immediately available to the person browsing the web.

This delay has stymied the security benefits of hosting your site on multiple servers, as your site would be down for a couple of days if something went awry with one server. You would have to change your DNS to reflect your second server and wait days before the change was picked up in routers on the internet.

However, the round robin DNS strategy solves this predicament, by mapping your domain name to more than one IP address.

Select hosting companies now employ the DNS round robin technique in conjunction with'failover monitoring'.

The DNS round robin failover monitoring process starts by a web hosting company setting up your site on two or more independent web servers (preferably with different IP blocks assigned to them). Your domain name will therefore have 2 or more IP Addresses assigned to it.

Then the failover monitor watches your web server(s) by dispatching data to a URL you specify and looking for particular text in the results. When the system detects that one of your IP addresses is returning an error, and the others aren't, it pulls that IP address out of the list. The DNS then points your domain name to the working IP address/s

If any of your IP's come back online they are restored to the IP pool. This effectively and safely keeps your site online ? even if one of your web servers is down.

The average failure detection and recovery time with a system like this can be as low as 15 minutes. This time varies depending on the speed of your site and the nature of the failure and also how long other ISP's cache (save) your DNS information.

The time taken for other ISP's caching your information can be manipulated in the failover monitor by lowering the "time to live" (TTL) cache settings. These are the settings that other ISP's will use to determine how long to cache your DNS information.

Of course you must bear in mind the matter of how frequently data is synchronized between your website's servers. This will be the hosting company's responsibility, and this may become complicated where databases and user sessions are involved.

The very expensive hardware based failover monitoring systems that point a virtual IP address to other ISP's, while behind the scenes juggling a number of unique IP addresses on different servers, is of course the most 'elegant' solution to multi server hosting.

That way, the whole issue of ISP's caching your information does not come into play.

Therefore, for site's that need to have true 99.99995% uptime, without huge outlays of money, the technology is readily available and certain proprietory failure monitoring systems are now relatively cheap to apply.

About The Author

Godfrey Heron is the Website Manager of the Irieisle Multiple Domain Hosting Services company.Signup for your free trial, and host multiple web sites on one account: http://www.irieisle-online.com

In The News:


Cloudbric and eSecureData Announce Partnership to Extend WAF Service to Web Hosting Providers
GlobeNewswire (press release)
22, 2017 (GLOBE NEWSWIRE) -- As a growing global web security service, Cloudbric has continued to respond to increased demand for cloud services and announced today a partnership with eSecureData, Canada's leading web hosting and infrastructure ...

and more »

Bdaily

Web hosting 101: why the public sector needs strong hosting providers
Bdaily
Having a reliable web hosting provider is vital for any organisation with an online presence. Public sector sites that could experience high volumes of traffic must take particular caution, ensuring that their web host can monitor and manage that level ...


Politico

Web hosting company ordered to turn over information on anti-Trump website
Politico
A legal storm is building after a D.C. judge ordered a web hosting company to give the government a broad swath of data about individuals connected to an anti-Trump website despite arguments that doing so would impinge on their First Amendment rights ...
Court orders web hosting company to turn over visitor data on anti-Trump siteThe Independent
Web Hosting Company Claims 'Clear Victory' For Online Privacy In Fight Over Anti-Trump SiteCBS Philly
DreamHost Ordered to Release Some Trump Protest Website Data to USNew York Times
CBS San Francisco Bay Area -Naked Security -NPR -DreamHost
all 130 news articles »

Prolific North

Web hosting specialists to appear at eCommerce Show North
Prolific North
Reliable web hosting is a mission-critical component of eCommerce websites, and the company you choose to host your website matters. Add to this the incredible growth of cloud-based business applications that take systems out of your IT department and ...


The Costa Rica News

How to Choose the Perfect Web Hosting Business for Your Online Ventures
The Costa Rica News
When it comes to running an online-based business, it's imperative you choose the right web hosting business for your ventures. Otherwise, you're going to end up wasting time and money in the future when it comes to changing hosts. There's much to ...


BCW

How Are Blog Design, Page Loading Time, And Web Hosting Related?
BCW
The design of a blog, the loading time of its individual pages, and the web hosting responsible for maintaining its existence on the web appear to be different and separate concepts but are actually deeply related. They are very important factors that ...


San Antonio Business Journal

Liquid Web continues to grow in downtown San Antonio (slideshow)
San Antonio Business Journal
Managed cloud hosting company LiquidWeb LLC moved into its downtown San Antonio office a little less than a year ago. Since then, the company has continued to hire employees to accommodate customer growth.


TechSpective

The Best Features to Look for When Choosing Your Web Hosting ...
TechSpective
When it comes to choosing a web-hosting site, it can be a bit overwhelming firstly because there are so many options, and secondly the jargon can be a bit.

and more »

The Daily Dot

Neo-Nazi website Stormfront has been shut down by its hosting provider
The Daily Dot
After more than 20 years as one of the foremost neo-Nazi and white supremacist websites in the U.S., it appears as if Stormfront is no more. On Friday, Network Solutions―the site's host, under the parent company Web.com― reportedly seized the domain, ...
World's oldest neo-Nazi website Stormfront shut downTelegraph.co.uk
Waning Storm: Stormfront.org Loses Its DomainSouthern Poverty Law Center
Stormfront silenced after decades of neo-Nazi hate speechThinkProgress
Slate Magazine (blog) -International Business Times -Stop Hate Project -Knoxville News Sentinel
all 107 news articles »
Google News

Setting up Your Personal Server

There are many things to consider when setting up your... Read More

Useful Tips When Applying For A Web Host Provider

Once you have considered the design for your website and... Read More

What to Look for in a Free Hosting Provider

The first thing that you must realize when looking for... Read More

Linux vs. Windows Web Hosting, Does It Make A Difference?

One of the most confusing decisions someone new to web... Read More

Reseller Web Hosting - A Cheaper Alternative?

There comes a time when the internet bug hits us... Read More

Windows Hosting versus Linux Hosting

The matter of choosing between the operating system (OS) running... Read More

What to Look for in a Web Host

The first questions you have to ask yourself are: how... Read More

Dedicated Web Hosting : The Executive Summary

What is Dedicated Web Hosting? Dedicated web hosting can alleviate... Read More

Tips About Low Cost Web Hosting Services

Here are some things you should know before finding a... Read More

Overselling Web Hosting: What Does It Mean To You?

Overselling is a big trend in the web-hosting world at... Read More

Small And Medium Businesses Embrace Servers Running Linux

Although we are aware of Linux adoption by large enterprises,... Read More

Cheap Web Hosting - When Cheaper is Better

Anyone who has ever shopped for web hosting knows that... Read More

Buyer Beware: Web Hosting, Registration, and Site Building All in One Package Nightmares

Starting out in any type of online marketing or Internet... Read More

Web Hosting Woes for Beginners

Every individual when it starts surfing the net for choosing... Read More

Questions To Ask a Hosting Company Before You Start

There are several types of hosting. Among them are:Free hosting... Read More

What is a Web Host Reseller Account?

A web host reseller account is a web hosting account... Read More

Dedicated Web Hosting Is Easy When You Know These 3 Timesaving Secrets

Dedicated web hosting has its difficulties and problems from time... Read More

4 Critical Things To Look Out For In A Web Hosting Service

1. The reputation of the web hosting company.Most web hosting... Read More

Free Web Hosting

There is no concept of free lunch in the world,... Read More

The Top 10 Essential Ingredients of Every Linux Hosting Plan (Package)

Any website comprises the following ? Domain name, Webspace, Webpages.Lets... Read More

Web Hosting Bandwidth -- How Much Bandwidth Is Enough?

Bandwidth in its simplest terms refers to the amount of... Read More

Managed Hosting

Managed hosting is a dedicated server that is accompanied by... Read More

Dedicated Server vs. Co-location Web Hosting

So - you know shared hosting no longer cuts it,... Read More

Back To School Web Hosting

Every year as school starts web hosts see an up... Read More

Free or Paid Web Hosting?

Just finished your first website? So it's the time to... Read More