Sponsorised links
May 2008
April 2008
scalr - Google Code
Scalr is a fully redundant, self-curing and self-scaling hosting environment utilizing Amazon's EC2.
It allows you to create server farms through a web-based interface using prebuilt AMI's for load balancers (pound or nginx), app servers (apache, others), databases (mysql master-slave, others), and a generic AMI to build on top of.
The health of the farm is continuously monitored and maintained. When the Load Average on a type of node goes above a configurable threshold a new node is inserted into the farm to spread the load and the cluster is reconfigured. When a node crashes a new machine of that type is inserted into the farm to replace it.
4 AMI's are provided for load balancers, mysql databases, application servers, and a generic base image to customize. Scalr allows you to further customize each image, bundle the image and use that for future nodes that are inserted into the farm. You can make changes to one machine and use that for a specific type of node. New machines of this type will be brought online to meet current levels and the old machines are terminated one by one.
The project is still very young, but we're hoping that by open sourcing it the AWS development community can turn this into a robust hosting platform and give users an alternative to the current fee based services available.
ZSFA -- Vellum
Vellum is a simple build tool like make but written in Python using a simple yet flexible YAML based format. Rather than attempt a full AI engine just to get some software built, I went with the simpler algorithm of a “graph”.
Sponsorised links
February 2008
ONLamp.com -- Using Xen for High Availability Clusters
The idea of using virtual machines to build high available clusters is not new. Some software companies claim that virtualization is the answer to your HA problems, off course that's not true. Yes, you can reduce downtime by migrating virtual machines to another physical machine for maintenance purposes or when you think hardware is about to fail, but if an application crashes you still need to make sure another application instance takes over the service. And by the time your hardware fails, it's usually already too late to initiate the migration.
January 2008
ClusterMonkey - Building A Virtual Cluster with Xen (Part One)
This guide is the first of a series in which I give you detailed step-by-step instructions on how to build a virtual cluster with Xen. The cluster thus built might not be appropriate for your case, and does reflect the author's preferences and/or needs, but if you are new to clusters or Xen, it will hopefully help you get started with both.
The goal is to start it simple and then add more complexity as we progress, so in this first guide I show you how to get do the basics:
* A Xen installation, the creation of 5 virtual machines (one to act as the master and four slaves),
* Shared storage through NFS,
* The network configuration on which to build the virtual cluster.
The network structure of this first attempt will be very simple, the master having two network cards, one to the outside world and the other one connected through a switch to the slaves.
December 2007
Valencia Property For Sale
Valencia Property For Sale - Property For Sale Valencia Spain Spanish Property
November 2007
Interface elements for jQuery - About Interface
Interface is a collection of rich interface components which utilizes the lightweight JavaScript library jQuery. With this components you can build rich client web applications and interfaces with the same simplicity as writing JavaScript with jQuery.
~jk flv streaming
High performance flv-streaming with lighttpd is possible since lighttpd 1.4.11.
With lighty you can easily handle 10000 parallel downloads of your movies including protection against hot-linking with mod_secdownload. This is basicly all you need to build the free video.google.com for yourself.
August 2007
Visual Studio Macro for Build Command
Contains a list of macros which useful for building project in Visual Studio
June 2007
May 2007
April 2007
How To Build A Homemade Hydroponics System
How To Build A Homemade Hydroponics System
Maisons à ossature bois dans les Landes - Mayom
Spécialiste des maisons en bois dans le sud ouest de la France (Landes, 40), Mayom Habitat fournit des constructions de qualité; et écologiques avec ses ossatures bois. Créateur d'espaces de bien-être depuis 1975.
