When migrating web host to a different hosting service’s server or modifying the server’s IP address, the most important consideration to guarantee to retain availability of the websites hosted on the server, minimize the downtime of the web sites, avoid strange troubles such as emails get delivered to either server randomly, or surfing at old server, is how fast DNS (Domain Name System) will be able to read or resolve hostname or domain name into your new IP address, rather than the old IP address. Unluckily, webmasters have limited ability to control or override the DNS propagation process. However, there are still a few tips, tricks and workarounds that guarantee DNS cache will refresh the new IP addresses as soon as possible.
DNS acts in such as aside that when a request for IP address received by DNS resolver, it will then query the root hosts to find the authorized server with detailed knowledge of the specific domain name. If a valid IP address for the domain is returned by the authoritative server, the DNS resolver will cache the DNS propagation for a given time period called TTL (Time To Live) after a successful reply, in what called DNS caching in order to reduce the load on particular DNS server. DNS caching provides resolution of domain name to IP to happen locally using the cached information rather than querying the remote server for subsequent requests, till the TTL duration expires.
Nowadays high-end flagship video cards may price an arm and a leg, but that section of the market isn’t where the actual money is. The big money is made in the low-end and mid-range (or mainstream) segments of the market. It’s simple really: most folks shopping for a video card have budgeted $100-250, although comparatively fewer have $400+ budgets for just graphics.
ATI has finally launched its extremely awaited graphics circuit R600 and the graphics card series Radeon HD 2900. There’s been an almost unbearable await for a lot of gamers, not the least those who are impatient to overclock the new circuit. Someone told us that records are thought of to be broke down and that’s what we are going for in this overclocking article starring ATI’s fresh graphics card.
