Webfarms II: Balancing The Load. Okay, so you understand webfarms now. What's the magic that actually distributes the load, and how does it determine how the distribution is handled?
At ORCS Web we use the Foundry Server Iron products to perform our webfarm load-balancing. If one of them fails, the other instantly takes over (In our testing, it had sub-second fail-over!)
So what is this "Server Iron" thing? In simplest terms, it's a layer 4-7 switch. It has multiple network ports on it and can be used literally like other types of switches. But, it can also load-balancing and traffic distribution. A VIP (virtual IP) can be assigned to the SI (Server Iron) and it then handles all traffic sent to that address/VIP. Further configuration is done to tell the SI what to actually do with the traffic sent to the VIP address.
|
|
Internet 4 people 5122 E Shea Blvd Scottsdale , AZ 85254 U.S.A. Phone: (480) 342-9065
|
 Map
|
Read Newsgroup Mentions
Read WHT Forum Posts
Check Alexa Data
Check Ping Time
|
Free Web Hosting Plan
View other plans offered by Internet 4 people |
| Plan Details | |
| Plan: | Free Web Hosting |
| Plan URL: | |
| Plan Type: | Shared |
| Platform: | Unix or Linux |
| Price Per Month: | 0.00 |
| Price Per Year: | 0.00 |
| Setup Fee: | No Set Up Fee |
| Non-Profit Discount: | |
| Disk Space (MB): | 100 |
| Extra Disk Space: | n/a |
| Bandwidth Allowed: | 600 MB |
| Extra Bandwidth: | n/a per GB |
| Backup Frequency: | Daily |
| Account Setup Time: | 0 |
| Minimum Contract: | No minimum |
| Money Back Guarantee: | |
| Email Accounts: | 0 |
| Email Autoresponders: | 0 |
| Email Aliases: | |
| Web-Based Email: | |
| Account Features | |
| Databases Supported: | MS Front Page Extensions |
| Server Component List: | ASPMail |
| Control Panel: |  |
| FTP: | |
| FrontPage® Support: | |
| Telnet Account: | |
| SSH Support: | |
| SSI Support: | |
| ASP Support: | |
| Cold Fusion Support: | |
| PHP Support: | |
| JSP Support: | |
| CGI Support: | |
| Perl Support: | |
| Shopping Cart: | |
| Merchant Account: | |
| Realtime Credit Card Processing: | |
| SSL: | |
| Adult Content Allowed: | |
| Free Domain Parking: | |
| Free Domain Registration: | |
| Private Servers: | |
| Raw Logs Available: | |
| Graphical Web Traffic Reports: | |
| Java Virtual Machine: | |
| Steaming Audio: | |
| Streaming Video: | |
| Network and Servers | |
| Connection Speed: | OC12 |
| Server Hardware: | |
| Server Software: | unix, win2000 |
| Sites per Server: | 100 |
| Technical Support | |
| Business Hours: | |
| Technical Support Hours: | |
| 24 Hour Technical Support: | |
| Tollfree Technical Support: | |
| Technical Support by Phone: | |
| Technical Support by Chat: | |
| Manuals Available: | |
| Browse Hosting Plans |
 HomePrivate/DedicatedCo-LocatedShared/VirtualUnix/LinuxWindowsBudget (<$10)FreeSearchArticlesContactPrivacy PolicyAdd to Favorites |
| Did You Know? |
How Search Engines & Directories WorkThis article is intended as a primer for those interested in how search engines and directories index web sites. It is not a substitute for professional assistance, since the search engine optimization industry is one of the most dynamic on the Internet.
|