Cloud computing is a general term for anything that involves delivering hosted services over the Internet. These services are broadly divided into three categories: Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS) and Software-as-a-Service (SaaS). The name cloud computing was inspired by the cloud symbol that’s often used to represent the Internet in flow charts and diagrams.

A cloud service has three distinct characteristics that differentiate it from traditional hosting. It is sold on demand, typically by the minute or the hour; it is elastic — a user can have as much or as little of a service as they want at any given time; and the service is fully managed by the provider (the consumer needs nothing but a personal computer and Internet access). Significant innovations in virtualization and distributed computing, as well as improved access to high-speed Internet and a weak economy, have accelerated interest in cloud computing.

A cloud can be private or public. A public cloud sells services to anyone on the Internet. (Currently, Amazon Web Services is the largest public cloud provider.) A private cloud is a proprietary network or a data center that supplies hosted services to a limited number of people. When a service provider uses public cloud resources to create their private cloud, the result is called a virtual private cloud. Private or public, the goal of cloud computing is to provide easy, scalable access to computing resources and IT services.

Infrastructure-as-a-Service like Amazon Web Services provides virtual server instances with unique IP addresses and blocks of storage on demand. Customers use the provider’s application program interface (API) to start, stop, access and configure their virtual servers and storage. In the enterprise, cloud computing allows a company to pay for only as much capacity as is needed, and bring more online as soon as required. Because this pay-for-what-you-use model resembles the way electricity, fuel and water are consumed, it’s sometimes referred to as utility computing.

Platform-as-a-service in the cloud is defined as a set of software and product development tools hosted on the provider’s infrastructure. Developers create applications on the provider’s platform over the Internet. PaaS providers may use APIs, website portals or gateway software installed on the customer’s computer. Force.com, (an outgrowth of Salesforce.com) and GoogleApps are examples of PaaS. Developers need to know that currently, there are not standards for interoperability or data portability in the cloud. Some providers will not allow software created by their customers to be moved off the provider’s platform.

In the software-as-a-service cloud model, the vendor supplies the hardware infrastructure, the software product and interacts with the user through a front-end portal. SaaS is a very broad market. Services can be anything from Web-based email to inventory control and database processing. Because the service provider hosts both the application and the data, the end user is free to use the service from anywhere.

1. Go to Help -> Install New Software…
2. In the “Work with:” text box, enter: http://update.aptana.com/install/studio
3. Click Add…
4. Specify the Name of the Update site (i.e. Aptana Studio Plugin)
5. Click OK
6. Select the “Aptana Studio” checkbox
7. Click the Next Button
8. Confirm the items you are installing
9. Click the Next Button once more
10. Accept the terms and conditions
11. Click the Finish Button

http://www.venukb.com/2006/08/20/install-eclipse-plugins-the-easy-way/

Download it here.

File -> New -> Other

Under Remote System Explorer, select “connection” and click next.

Select connection type (SSH only for me)

Then, add RSE perspective,

you can browse remote files, have shells and remote terminals.

1. better  search engine

- many different opinions on this, but it looks that dedicated IP seems to be helpful for search engine result

2. SSL support

- e-commerce website needs SSL which requires a unique IP address.

One note is that webfaction.com does not provide dedicated IP but private IP address.

Private IP address is a bit different from dedicated IP.

If you typed http://64.233.187.99/ into your web browsers address bar you would see Goggle’s web site come up. This is their dedicated IP address and no one else’s.

Private IP address does not support the above (#1) but it can support SSL (#2).

For example,

Publisher – Book

—-

class Book(models.Model):

publisher = models.ForeignKey(Publisher)

—–

There are two cases:

>>> b = Book.objects.get(id=78)

>>>b.publisher

>>>p=Publisher.objects.get(name=’Aplus’)

>>>p.book_set.all()

Note that book_set

is just a QuerySet.

Thus it can be filtered and sliced.

>>>p.book_set.filter(name__icontains=’django’).order_by(‘name’)[0:2]

objects.order_by()

—————-

e.g.,

>>>Card.objects.order_by(“name”)

for reverse order

>>>Card.objects.order_by(“-name”)

File

2. Select

Import

3. select

Existing project into workspace

Then, follow your instinct.

—————–

if you can’t see the window,

try to select

Window

and then

New window

check if ‘templatetags’ directory has

__init__.py file or not.