Archive | December 2009

Virtual Private Cloud by Amazon

It seems that cloud computing service is a trending topic of the last period between the most famous “internet” companies.

And probably this will regard consumer in the not so far future..

After Ubuntu and Apple (the ones I remember most) are going to develop their own cloud computing services here it comes Amazon, the world famous books and music online retailer.

More specifically Amazon is going to release to the public (to all users of its EC2 cloud-computing services) its Virtual Private Cloud as a beta. This release follows a limited test that began in August. Amazon says that the VPC is one of the most requested feature from enterprise customers.

[more infos]

Google launches Google Public DNS

Google has lauched a new service: a new public DNS resolver.

The Google Public DNS IP addresses are as follows:
8.8.8.8
8.8.4.4

This will make you web pages to load faster, which is a very good news for these days of highly structured HTML web pages full of multimedia contents and any kind of flash widget.

I”m testing it and it seems that it really brings some improvements and speed to the browsing.

In my humble opinion this is very useful for google wave that is still very heavy and slow..

Here is an extract of the google code blog post announcing this service

  • Speed: Resolver-side cache misses are one of the primary contributors to sluggish DNS responses. Clever caching techniques can help increase the speed of these responses. Google Public DNS implements prefetching: before the TTL on a record expires, we refresh the record continuously, asychronously and independently of user requests for a large number of popular domains. This allows Google Public DNS to serve many DNS requests in the round trip time it takes a packet to travel to our servers and back.
  • Security: DNS is vulnerable to spoofing attacks that can poison the cache of a nameserver and can route all its users to a malicious website. Until new protocols like DNSSEC get widely adopted, resolvers need to take additional measures to keep their caches secure. Google Public DNS makes it more difficult for attackers to spoof valid responses by randomizing the case of query names and including additional data in its DNS messages.
  • Validity: Google Public DNS complies with the DNS standards and gives the user the exact response his or her computer expects without performing any blocking, filtering, or redirection that may hamper a user’s browsing experience.

And here there’s a nice guide to setup your system in order to gain the advantages offered by this service.

Today

Ok, today I finally passed the first exam of this series.. Now I have to pass the next two..

It’s a hard period from all the points of view and I hope to go through it as soon as possible..

Sorry for the very few posts.. I promise you a lot of updates..

For the moment just know that Apple bought the brand “TabletMac” and that’s a truly good news for the ones expecting this shining brand-new Apple product..

Hoping you’ll understand me..

Best Wishes,

Slacabos