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Posts tagged internet
Mastering clusters of Unix machines part2: the right tools
Oct 12th
After working with unix for years, we noticed it is difficult to get a very uniform approach to unix management.
Often different Linux distributions share very little, configuration is different every time. Worst, some good unix tools (like cron, syslog, etc) can be used in a distributed environment, but are very difficult to configure, very user unfriendly and so on.
OpenPKG is a very clever stuff, because enable you to install multiple copies of the same software with minimal effort.
CFEngine is “an automated suite of programs for configuring and maintaining Unix-like computers.”
One of the strong ideas, is the cfengine ability to “self-repair” configuration, which More >
Mastering clusters of Unix machines part1: the right VM
Oct 5th
One day, we have the need to create a fast cluster of linux machine, specialized and easy to segragate in different networks (for better security). We need web servers, integration servers (running java hudson), huge developer machines (running for instance eclispe) and so on.
It was not easy to find a good environment. This research lead us also to consider a very huge set of different and complex management software. In this series of article, we will show what we discovered.
Or final goal is to have a way to define a set of linux virutal machines, connect them and manage all More >
Erlang Book Review
Jul 19th
This entry is part 2 of 7 in the series Programming Languages
After reading an interesting article on Erlang and Java interoperability, I have decided to dedicate my spare time to Erlang.
O’Reilly has just published a wonderful book on Erlang, so I decided to dive into it.
Evolving concurrency, like memory management did
Jun 11th
As processors become faster and multiprocessor systems become cheaper, the need to take advantage of multithreading in order to achieve full hardware resource utilization only increases the importance of being able to incorporate concurrency in a wide variety of application categories.
In this article we are evaluting a new approach to the concurrency. In the last five years computers are becoming even more parallel. Intel is pushing multi-core achiteture also on commodity personal computers. Neverless the computing power is ofter not well used: one again, hardware is a step head of our day-by-day software development. Remember when the 80286 came into More >
WolframAlpha A new type of search engine
Jun 5th
Hi World. I didn’t lost a bit of grip on edge news, altrought now I am married!
In the first days of May we read about a new serach engine, called WolframAlpha.
The idea behind WolframAlpha are interesting, so we will take a close look to it.
Slashdot is following the engine very tightly (“Wolfram Alpha Launches Tonight, On Camera”, published on May 16) ans so will do Gioorgi.com.
[UPDATED! Google Squared is out of there!!]
First published on May 18th, 2009
A very good hosting provider
Mar 3rd
After my past experience with bad hosting provider, I am happy to say I have find a very good hosting service. If you need VPS hosting, Rimuhosting is a very good choice.
After about two years with Rimuhosting, I can summarize their feature here:
- They have a very good entry-price for a virtual hosting
- System aministrator has a very prompt response: on every issue I get support in 24 hours, also on Sunday
- Rimuhosting uses a Xen virtualization mechanism which is very effective. I have tried other virtualized solution, which are worst.
- Java hosting works well, without problems.
- The default Bandwith is very huge (30GB). There is More >
Statistiche digitali
Jan 31st
Leggendo da ComScore la seguente statistica sul numero di utenti che si connettono ad Intenet, mi sono permesso di fare qualche osservazione:
Popolazione connessa a internet (Fonte comScore) 1. China: 179,7 milioni Ma ricordate la censura… 2. United States: 163,3 milioniMa sono in crisi… 3. Japan: 60 milioni
Ma si sà che sono fanatici della tecnologia 4. Germany: 37 milioni
Precisi al quarto posto. 5. United Kingdom: 36,7 milioni
Ué dietro la germania?! 6. France: 34 milioni 7. India: 32,1 milioni 8. Russia: 29 milioni 9. Brazil: 27,7 milioni 10. South Korea: 27,3 milioni 11. Canada: 21,8 milioni 12. Italy: 20,8 milioni
AAAAAAAAh non siamo More >
Storia Super Rapida di Internet
Dec 15th
Si parla molto di Internet su… Internet, ma tutte le pagine che trattano della storia di Internet hanno due classici difetti: (a) sono verbosissime e (b) sono in inglese. Così abbiamo pensato di fare un riassunto super compatto nelle pagine di Gioorgi.com…
La prima rete interconnessa è quella creata dal dipartimento di difesa americano, e chiamata ARPANET. Siamo all’inizio degli anni 70.
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