Can in this article, please use the technology in a number of hosting servers and how to deliver it to use it to maximize in order to;;;; s situation and the security and availability
Now, the hospitality of the site has become a commodity, where competition has a much higher level and increased ita;;;; It is very difficult to distinguish between hosting packages, based on the designs of the most important features and values . In addition, choosing a host, not based on the best price, the best idea is probably out to be very expensive in terms of reliability and possible loss of sales as a result of website downtime.
The choice of the best of thousands of providers and resellers is a very difficult task, which focus more on hit and trial method. Even if hosting is a commodity, while still must decide on a new host to find the credibility.
Now, in the heart of the credibility of any hosting company is redundant. Redundancy provides an alternative treatment for each problem. This is the continuity of the work to ensure as smooth and transparent as possible.
There are several hosts that redundant network connections are used. These are the effect service pipes with a high-speed data path from server to;;? S Web browser. Against this background, it is frequently used Web server redundancy "very rare and expensive and therefore rare. It is expensive because of the use of costly routing equipment, previously used only in mission critical applications in Fortune 500 companies.
There is still a very nice, but little known Domain Name Server (DNS) feature called "cyclical", which allows the selection and delivery of a specific IP address from the pool when a DNS request face counts.
The domain name server (DNS) database maps a host name to IP address. So instead of recalling a wide range of numbers (IP address) can easily / www browser to the Web. . mydomain com, to deliver to;;;; website.
Now with a request for DNS information on the market, it is usually at least 2 to 3 days. Therefore, if a register or transfer a domain name is not immediately available, the person surfing the Internet.
The delay has frustrated deliver the security of hosting;;;; s location for multiple servers, as the site for a few days in case of a problem with a server. As a means to change / DNS on the second server to reflect on and wait for several days before the change was made on the routers on the Internet.
There is one other solution to this problem ie, the round-robin DNS strategy solves this dilemma by deliver the image? Domain name in more than one IP address.
We must now choose hosting companies that DNS round-robin will be used in monitoring with'failover combination.
The DNS round robin is not in the monitoring process begins with a Web-hosting companies deliver device;;;; found space in two or more independent web servers. These deliver? S domain name is assigned so that 2 or more IP addresses.
Then you would deliver direct the Monitor Watches? S Web server (s) by sending data to specify a URL and looks for a specific text in the results. Now, if an error is returned by an IP address, it pulls the IP address from the list. The DNS then points deliver;;;, domain name for the work on IP / s
If any of the Usera;;? S IP's is back online, restoring the IP pool. This helps in maintaining deliver efficiently and safely;;;; s online site, also are down when one of the web server.
In this case, is an instrument failure detection and recovery time a system is very low and only 15 minutes. However, this time varies depending on the Majestic;;;; s speed, and deliver the type of damage and how long the cache and the other ISP (apart)? S DNS information.
The time required to deliver the temporary storage of other ISPs;;;? S information may be manipulated to Live "(TTL) cache settings on the failure to reduce the" Time Monitor. These are the settings of other ISP used to determine the time to deliver cache? S DNS information.
One must also keep in view the question of how frequently data is synchronized between the web site on the servers. This is now under the responsibility of the hosting company, and this is complicated when it comes to databases and user sessions.
The most elegant solution for multi-server hosting is very expensive hardware based failover monitoring systems that point a virtual IP address with any other ISP, and behind the scenes juggling a number of unique IP addresses on different servers.
Deliver in this way, the whole question of temporary custody of the ISP;;;? S information is not brought into the game.
To get to 99th 99.995% uptime, without having a large sum, but the technology is readily available and certain proprietary failure monitoring systems are now relatively inexpensive to implement.