Click here for books on. DNS-&-BIND

Tuesday, November 16, 2010

SEO TIP Reduce DNS Lookups Rocket Speed Web Page

How to make a rocket speed web page Domain Name System. The DNS charts the hostnames to IP locations, in the same way as the book yellow pages dose map out houses and businesses to their company phone numbers.

After you have opened up your Firefox browser and the entered some thing like www.google.com the Domain Name System resolver sends back the web server IP address, but this dose have a price of time.

The DNS characteristically clocks up around 20-120 milliseconds to complete the DNS lookup request from the hostname chosen IP address location. The pour burning fox has to just site there and can't download the date packagers a web hostname server pending the DNS lookup has been fully accomplished its task, e.g. time to first bit.

The Domain Name System lookups are cached to provide improved webpage performance. The dater record storage system runs on dedicated caching web servers, controlled from your ISP internet-service-provider otherwise a LAN local-area-network, nevertheless in accompaniment to this the file caching also take place for each individuals home computer unit.

The DNS record information stays in your operating system DNS Client cache, the dnsrslvr.dllon Microsoft Windows operating systems. The majority of modern day web browsers include a webpage cache this is independent from your windows operating system file cache. Whilst internet explorer maintains a DNS-record within its own cache, IE has no necessitate asking the operating system for the request record.

The standard cache lookup setting for Internet Explorer is 30 minutes, set with the DnsCacheTimeout registry configuration. The Firefox default cache DNS lookups that are set for 1 minute will be changed by Fasterfox to 1 hour, controlled by the network.dnsCacheExpiration data setup configuration.

At the point were the cache on the client side DNS is empty, both Internet Explorer and the windows system, its quantity figure of DNS lookup resolutions are equal to the number of unique web severs hostnames in your Blog web page. This includes all http requests used in the page's URL, Java, images or script files, and stylesheets, Adobe shockwave Flash objects, any that is required from another source.

The best practice for rocket speed web page performance is to reduce the requests, but having only 1 would be as bad as having 20 of them.

Dropping down your sites page quantity of unique hostnames will equally decrease the amount of name lookups to be implemented by the DNS server.

Sinking the amount of unique web host sever names would-be a decrease in the total number of parallel requests downloading that is happens on your website.

Try to steer clear of large amounts of DNS lookups, they really do cut the response download time, but reducing parallel downloads may increase download response period.
It's really best to do a server waterfall test, to see how your site is loaded, you can only get to things from one place a once.

I think it is good to divide the file components across four to nine hostnames but try not to have much more. Some people say 2 to 4 hostnames but there site will not be very interactive e.g. not nice Face book social network widgets or Youtube videos and so-on.

What is required is a nice loading balanced compromise sandwiched between the reducing of your DNS lookups along with permitting a lofty quantity of parallel sever downloads.

Q. How will Google reward me for this, rocket speed web page reduce DNS Lookups a fast site?
A. I got one of my kids sites speed down from 13 sec to about 4.5 sec and got about 35% increases in traffic.


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DNSSEC Deployment Options

Download BIND 9.3.5-P2-W2

BIND 9.3.5-P2-W2

BIND 9.3 is a previous major release. It is still supported, and bug fixes and security fixes will be made available as minor releases. No new features will be added.

Some of the important features of BIND 9 are: •DNS Security ?DNSSEC (signed zones) ?TSIG (signed DNS requests) •IP version 6 ?Answers DNS queries on IPv6 sockets ?IPv6 resource records (AAAA, DNAME, etc.) ?Experimental IPv6 Resolver Library •DNS Protocol Enhancements ?IXFR, DDNS, Notify, EDNS0 ?Improved standards conformance •Views ?One server process can provide multiple "views" of the DNS namespace, e.g. an "inside" view to certain clients, and an "outside" view to others. •Multiprocessor Support •Improved Portability Architecture

Downloading: BIND 9.3.5-P2-W2 Windows XP/2003/2008 Binary Kit
Click here for books on. DNS-&-BIND

Description The fifth edition covers BIND 9.3.2, the most recent release of the BIND 9 series, as well as BIND 8.4.7. BIND 9.3.2 contains further improvements in security and IPv6 support, and important new features such as internationalized domain names, ENUM (electronic numbering), and SPF (the Sender Policy Framework). Whether you're an administrator involved with DNS on a daily basis or a user who wants to be more informed about the Internet and how it works, you'll find that this book is essential reading.

Description The fourth edition of DNS and BIND covers the new 9.1.0 and 8.2.3 versions of BIND as well as the older 4.9 version. There's also more extensive coverage of NOTIFY, IPv6 forward and reverse mapping, transaction signatures, and the new DNS Security Extensions; and a section on accommodating Windows 2000 clients, servers and Domain Controllers.

Description The DNS & BIND Cookbook presents solutions to the many problems faced by network administrators responsible for a name server. This title is an indispensable companion to DNS & BIND, 4th Edition, the definitive guide to the critical task of name server administration. The cookbook contains dozens of code recipes showing solutions to everyday problems, ranging from simple questions, like, "How do I get BIND?" to more advanced topics like providing name service for IPv6 addresses.

Description DNS on Windows Server 20003 is a special Windows-oriented edition of the classic DNS and BIND, updated to document the many changes to DNS, large and small, found in Windows Server 2003. Veteran O'Reilly authors, Cricket Liu, Matt Larson, and Robbie Allen explain the whole system in terms of the new Windows Server 2003, from starting and stopping a DNS service to establishing an organization's namespace in the global hierarchy.

Description This special Windows-oriented edition of the classic DNS and BIND is a guide to one of the Internet's fundamental building blocks: the distributed host information database responsible for translating names into addresses, routing mail, and many other services. Covers server setup and maintenance along with Windows-specific topics like integration between DNS and Active Directory, conversion from BIND to the Microsoft DNS server, and registry settings.

This Open Source Guide is about DNS and (mostly) BIND 9.x on Linux (Fedora Core), BSD's (FreeBSD, OpenBSD and NetBSD) and Windows (Win 2K, XP, Server 2003). It is meant for newbies, Rocket Scientist wannabees and anyone in between. This Guide was born out of our first attempts a number of years ago at trying to install a much needed DNS service on an early Redhat Linux system. We completed the DNS 'rite of passage' and found it a pretty unedifying and pointless experience.

The Concise Guide to DNS and BIND provides you with the technical depth and expert-level information you need to understand and administer DNS and BIND. Domain Name System (DNS) is a distributed Internet directory service. It is used mainly to translate between domain names and IP addresses, and to control Internet email delivery. Most Internet services rely on DNS to work, and if DNS fails, Web sites cannot be located and email delivery stalls. BIND (Berkeley Internet Name Daemon) is an implementation of the Domain Name System (DNS) protocols.

The BIND 9 DNS Administration Reference Book is based on Internet Systems Consortium's BIND 9 documentation including the Administrator Reference Manual (Bv9ARM). In addition to hundreds of improvements (most integrated upstream) and major reorganization of the original documentation, new content, examples, detailed indexing and more cross-referencing were added. This book is an excellent resource which provides a convenient way to find BIND 9 documentation and to learn DNS basics.

Dru Lavigne's new book is simply the best FreeBSD how-to book out there. This book is well written with specific instruction on how to make things work. Make no mistake about it.....Whether you are a novice or a system administrator, you need this book in your library. Unlike other FreeBSD books out there which basically copy the online handbook, Dru Lavigne compiled literally hundreds of FreeBSD tricks in this new book. You won't be disappointed!

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