Home
>
Web Hosting
>
How Multiple Server Hosting impacts your websites uptime

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

move in cleaning service Wilmette ..

In The News:

Privacy risks are hiding in plain sight, as your personal data is likely being collected, tracked, and sold without your knowledge.

VenHub, a fully autonomous, AI-powered smart store just opened at the LAX/Metro Transit Center in Los Angeles.

A woman's Facebook account takeover reveals dangerous social engineering tactics and provides lessons on recovery, avoiding scams and enacting stronger security measures.

Shanghai engineers are using 432 walking robots to relocate a complex, preserving Shikumen architecture while creating space for a modern underground hub and cultural center.

Major healthcare data analytics firm Episource had a cybersecurity incident exposing 5 million patients' medical records and personal information in recent breach.

A new sophisticated PayPal scam sends legitimate-looking emails from official PayPal addresses, using phone numbers instead of links to convince victims to download remote access tools.

Fox News' AI Newsletter brings you the latest on this rapidly evolving technology.

The innovative Kara Pod device extracts moisture from air to create mineral-rich water and brew coffee, featuring UV sterilization and compatibility with Nespresso pods.

Gov. Hochul unveiled New York's nuclear power plant project to power a million homes, which faces permit challenges while promising jobs and a cleaner energy future.

SAFE introduces Aerie, an underground luxury bunker combining high-end living with advanced security, wellness amenities and interactive walls simulating panoramic views.

A Facebook scammer posing as Elon Musk tricked a victim with promises of a Tesla and $250,000, requesting gift cards that become untraceable once the codes are shared.

Experience hands-free golfing with the Robera Neo smart caddie that uses AI to follow you, navigate obstacles and carry your clubs with GPS course mapping.

Cybersecurity alert: 16 billion passwords exposed in massive credential database affecting major platforms. Protect your accounts with password managers

The innovative BeBot robot uses electric power to remove pollution from shorelines, covering 20-30 times more area than manual collection while preserving wildlife.

A new ClickFix campaign targets macOS users with fake Spectrum support sites, tricking victims with CAPTCHA failures to paste commands that install information-stealing malware.

AI-powered autonomous trucks from Plus Automation are being tested across the U.S., Europe and Asia to solve logistics challenges while facing regulatory hurdles and labor concerns.

Your health information might feel private and secure with your doctor, but the reality is far more complicated. Data brokers collect a wide range of sensitive health data, from diagnoses and prescription details to personal identifiers, and sell this data to marketers, insurers, and other third parties.

Kepler Robotics has officially introduced its Forerunner K2 "Bumblebee" humanoid robot at the SAIC-GM automotive plant in Shanghai, marking a significant moment in the real-world deployment of advanced robotics.

Scammers never seem to be running out of new ways to try and get their hands on your money – and lately, they've been getting sophisticated.

Thirty people were injured and killed, though the exact number remains currently unknown, when a suicide bomber blew himself up in a Damascus church.

Unexpected password reset alerts signal potential hacking attempts or phishing scams. Learn how to respond and establish stronger security measures for your accounts.

A historic electric airplane flight landed at JFK with passengers, marking a milestone as Beta Technologies demonstrates the practicality and efficiency of electric air travel.

The Chaos ransomware group breached Optima Tax Relief in a double-extortion attack, stealing sensitive customer case files and corporate documents with personal information.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

The first human brain-computer interface by Paradromics was completed in 20 minutes, featuring microelectrodes to help paralyzed individuals control computers with thoughts.

How Multiple Server Hosting impacts your websites uptime

Web Hosting