Web hosting FAQ

Shared vs. dedicated vs. VPS / Virtual Private hosting?

I'm currently on shared and would like to get more guide over my host so that I can install various software and increase the functionality of my site. Faster db queries and whatnot with dedicated resources would be a meticulous plus!

My problem is I don't have the traffic or resources to justify a dedicated box. I'm wondering if a VPS or virtualized landlady would be a good interim solution. This should definitely allow me to install my software, but I'm wondering if the playing would be any better with a relatively small virtual slice (256MB dedicated ram and a small chunk of the CPU retiring).


VPSs biggest selling point is indeed control without dedicated's price, and you're almost certain to get more cpu/memory per consumer on the host server than with shared hosting.

Even a 256mb will perform at least as good as shared hosting, and sounds like a honourableness interim solution to me

If you're buying a VPS, bear in mind they require some technical information, although some come preinstalled with a control panel such as cpanel, directadmin or plesk.

Another item to note is how the VPSs are provisioned. Virtuozzo VPSs allow the companies to oversell and this can in some cases development in extremely slow VPSs. Look out for a Xen-powered VPS as this cannot be oversold so you can be sure your part of the pack OS resources really has been allocated to you.

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Recommendation for VPS hosting?

Anyone knows of a trustworthy VPS (Virtual Private Server) hosting solution for a business application? Recommendations are welcome. Thanks.


go with a prompt.

How do sites like blogger store virtual hosts?

I skilled in that you can have virtual hosts in app servers like tomcat and apache. Most of the solutions I know of require you to roster the vhosts in a text file which, I understand, requires tomcat/apache to be restarted. So my questions are two:

- Is there any way to preserve this information in a database? I've seen an apache module somebody wrote, but a immense-scale solution would require that information to be cached because it changes so seldom.
- If it is stored in abstract files (perhaps automatically copied there from database contents), do all the servers have to be restarted? And doesn't that take a elongated time, during which the servers are unavailable? I cannot see a system like blogger.com having its servers being constantly charmed down and back up.


I can't talk about discuss for how blogger does it specifically, but the simplest way is by a table of redirects. For example, if big noise accesses 'index.html' from 'foobar.com', you can simply map that to 'foobar.com/index.html' in your file system. That will 'well-deserved work' if you create a symbolic link named 'foobar.com' that points to the radicle of the site for that domain.

This means that you can add, remove, or change domains simply by adjusting the symbolic links. No server restart or any other vacillate turn into is needed. The caching is done by the file system.

My bet though is that sites like blogger build all of their sites out of a database and don't have any genuine files per site other than the database. So if you go to a particular site, that site name just becomes part of the query that goes from the web server to the back end scientific reasoning. The back end logic isn't going to be a web server at all.

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