02 feb 12 NuvolaBase: the new no-sql company behind OrientDB launches the Graph Database in the Cloud
London, UK – NuvolaBase Ltd is a London-based startup that is about to revolutionize the database market. Only two years ago this market was dominated by few big players such as Oracle, IBM and Microsoft. Something, in the last 24 months, has changed thanks to the “NoSQL” movement which focused on alternative solutions to the ordinary Relational DBMS’s due to the pressing and increasing demands for better performance and higher scalability.
Today the largest IT companies avail themselves of NoSQL solutions to manage Mission Critical projects. Google, Amazon, Microsoft, Facebook, Twitter, Disney, MTV, Craiglist and FourSquare are amongst the most famous ones.
After just a year of testing, NuvolaBase comes out of Alpha version, offering a NoSQL database of high performance as a cloud-based service. This way the database is no longer a software component that needs installing, configuring and maintaining, but it becomes a distributed service that is always available on the internet.
Web Site: http://www.nuvolabase.com
Follow us on Twitter: https://twitter.com/#!/nuvolabase
LinkedIn: http://www.linkedin.com/company/nuvolabase-ltd
26 gen 12 liborient, OrientDB C library migrated to github
I never said before on those pages that some months ago I migrated liborient to github: liborient project page.
For those who do not know liborient, it’s a LGPLv3 library that can be used by C programs to interact with the OrientDB DBMS Server using the orientdb binary protocol. At the time of this writing it’s in development stage, but almost all low level binary protocol methods are implemented and should be quite working.
After fixing some (well known) memory leaks on the new odocument interface, I’m now working on a high level API that can be used by C programs to manipulate objects going to and coming from OrientDB Server.
You can, for example, put or get records to/from the server containing different data type fields. Those fields are organized into an object that OrientDB calls Document. This Document can include structured types like: integers, shorts, dates, strings, binary, char, float, collections, maps, documents embedded into documents, and more.
The liborient’s new odocument higher level API should make you comfortable to access and manipulate this documents.
This can be, for example, a good starting point to create native bindings for other languages like PHP, python, perl, ruby, etc.
At the moment I am the author and the only developer on this project, but if you are brave you can join and submit patches, test the code, open bugs, put your considerations, and so on. Feel free to send me a mail, add a comment to this page, write to the orientdb mailing list, send me a tweet at @tuxweb, or anything else.
12 ott 11 NuvolaBase project – Thu 20th I’ll be in London
On Thu 20th, I’ll fly to London City, I have to accomplish a interesting task for the NuvolaBase project.
News will come.
31 mag 11 liborient: A simple LGPLv3 linux C library proof of concept
Today i posted to the orientdb mailinglist and I’ve written about liborient, my very first orientdb C library implementation.
We are searching for new developers to join. This is what I putted to the list.
Hi all.
I’m making an attempt to write a proof of concept, simple, LGPLv3
OrientDB C library for linux.
The library is written in best effort, so don’t kill me if you see bad
code for now…
As a starting point, there is already a very first implementation of
some simple binary protocol methods.
For those there are interested, this is the API that it’s just (it
seems…) working with the latest OrientDB SVN version:
http://www.tuxweb.it/temp/apishot/liborient/liborient_8h.html#func-members
You can view development code here:
http://svn.tuxweb.it/cgi-bin/viewvc.cgi/liborient/trunk/main/liborient/src/
INSTALL:
1) Install the latest GNU autoconf, automake and libtool
2) svn co http://svn.tuxweb.it/SVN/projects/liborient/trunk/main/liborient
3) cd liborient
4) ./autogen.sh
5) ./configure –prefix=/tmp/liborient
6) make
7) make check
make install
Warning: this is a very first proof of concept implementation that I
started to study OrientDB. Do not use it in production environments.
Even if I think “the scalable way”, I’m a Linux SysAdmin and not a
full time developer, so may be the API is not well designed and the
code is ugly.
We need people that write code. If you are interested, please join in
and contribute.
This is a sample C program that links liborient… and works 
http://svn.tuxweb.it/cgi-bin/viewvc.cgi/liborient/trunk/main/liborient/test/single_orient.c?view=markup
<snip>
orientdb *oh;
o_conh *och;
unsigned long cid;
// create a new liborient handler
oh = orient_new();
// setup library debug level to “ORIENT_DEBUG”
orient_debug_setlevel(oh, ORIENT_DEBUG);
// setup debug callback
orient_debug_sethook(oh, &your_debug_function);
// preparing to open a new binary connection handler for orientDB
och = orient_prepare_connection(oh, ORIENT_PROTO_BINARY, “localhost”, “2424″);
// setting admin credentials
orient_set_credentials(oh, och, ORIENT_ADMIN, “root”, “pippo”);
// setting user credentials
orient_set_credentials(oh, och, ORIENT_USER, “reader”, “reader”);
// create the real connection with orientdb server
cid = orient_connect(oh, och, timeout);
// open the database “demo”
orient_dbopen(oh, och, cid, “demo”, timeout);
// get the DB size
dbsize = orient_db_size(oh, och, cid, timeout);
// get the total number of records
records = orient_db_countrecords(oh, och, cid, timeout);
// close the database
orient_dbclose(oh, och, cid, timeout);
// free library stuff
orient_free(oh);
</snip>
Any thoughts?
Ciao, Dino Ciuffetti.
18 mag 11 orientdb svn build
OrientDB is a fast, scalable, open source object / graph database server written in Java.
After more than 20 years of RDBMS predominance it’s now time to switch to non relational database systems, specially where scalability and query response time are two fundamental things to achieve a better user (web or not) experience.
So, how to get up and running quickly with orientdb?
Here we will build on a linux system the latest development version from source in no time: the simple way ™.
First thing to do is to download JDK Java Standard Edition 6 from http://www.oracle.com/technetwork/java/javase/downloads/index.html.
Please note that you will need the JDK and not JRE.
After that you will need Apache Ant. Download it from here: http://ant.apache.org/bindownload.cgi.
# cd /opt
# tar jxf apache-ant-1.8.2-bin.tar.bz2
Installed? Good. Now install subversion (svn). You can install it for example using your favorite distribution specific package manager, for example if you are using debian or ubuntu you could use apt-get utility, like that:
# apt-get update; apt-get install subversion
You have now to create a directory where you like on the system and begin to download the OrientDB development snapshot:
# mkdir /home/dino/orientdb-source
# cd /home/dino/orientdb-source
# svn checkout http://orient.googlecode.com/svn/trunk/ orient-read-only
When finished cd to orient-read-only.
You have now to set your JDK and ANT bin directories into your PATH system variable. You can do it by this way:
# export PATH=/opt/apache-ant-1.8.2/bin:/opt/jdk1.6.0_25/bin:$PATH
You can now begin to compile orient source code.
# ant clean
# ant
# ant test
# ant install
Ok. If compiled successfully, you now have to startup orient for the first time.
# cd /home/dino/releases/1.*-SNAPSHOT/bin
# chmod 754 *.sh
# ./server.sh
Ok. Now stop it with CTRL+C and modify the configuration file as you like:
# cd ../config
# vi orientdb-server-config.xml
The first thing to configure, if you need to publish the service on your network/internet, is the bind address. For example, to bind on any ip on the system: <listener ip-address=”0.0.0.0″ port-range=”2424-2430″ protocol=”distributed”/>
The second parameter to change is the root password: <user name=”root” password=”pippo” resources=”*”/>
Now start orientdb again:
# cd /home/dino/releases/1.*-SNAPSHOT/bin
# nohup ./server.sh 1>/dev/null 2>/dev/null &
You should now have done.
Connect your browser to http://127.0.0.1:2480/ and begin to play with your brand new orientdb studio web console:
host: localhost
user: writer
password: writer
database: demo
You can find open and solved issues here: http://code.google.com/p/orient/issues/list
Subscribe yourself to the orientdb users mailing list service: http://groups.google.com/group/orient-database, and enjoy!!
28 feb 11 ajax_proxy: the cross domain PHP ajax proxy
Hi all.
Maybe all web developers know the security restriction that any browser enforce: ajax requests must be destinated to the calling application domain.
We may need for example an external HTTP/REST, RSS, generic low level XML or json encoded web provider, distributed database, and so on. So, how can a web developer design an application that make use of an external HTTP provider from the browser?
Obviously we can use a reverse proxy on the calling domain, like squid or apache mod_proxy (ProxyPass /yoururl http://destination:port/yoururl) and point the javascript XMLHttpRequest to the proxy that is inside the calling domain, or we can create a DNS third level A record in our domain that point to the destination server.
[WARNING!!!]
Working with proxy servers is very very very dangerous, so let do this to a good sysadmin! You are warned!
[/WARNING!!!]
While this is true, generally the web developer it’s not a system administrator or simply he wants to go on stage quickly and without too much effort.
So how can we solve the problem? We could implement a simple web proxy at the application layer that pick the request inside our domain and forward it to the destination server, then reply to the caller.
Let’s go on. Here at NuvolaBase.com we have developed the first version of a simple but powerful PHP script that aims to resolve the problem of having a javascript request that tries to retrieve a HTTP page published on an external domain. It’s called ajax_proxy and it’s open source (LGPLv3).
http://svn.tuxweb.it/cgi-bin/viewvc.cgi/ajax_proxy/ajax_proxy.php?view=markup
You can download it here:
svn co http://svn.tuxweb.it/SVN/projects/ajax_proxy/
or
http://svn.tuxweb.it/SVN/projects/ajax_proxy/ajax_proxy.php
It’s young but it implements GET/POST request, may be PUT/DELETE/etc. More tests to come.
Please let me know your stories and considerations.
I’m at: dino@tuxweb.it
Ciao, Dino.
08 feb 11 NuvolaBase.com, the OrientDB on the Cloud
So this is finally there. NuvolaBase.com (alpha release) has been published yesterday at UIM-GDB in Barcelona by Luca Garulli, the OrientDB author.
I am really excited as TuxWeb cofounder for joining our technical collaboration with him for the alpha realization of this project.
I personally cover all the system administration and low level stuff.
- dAm2K!!
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