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@@ -105,8 +105,15 @@ is used to manage Linux containers at the kernel level using a similar strategy
as the Linux kernel user space program "lxc". CF also consists of many
configuration files in YAML format.
-The vmc client is written in Ruby and speaks JSON to a Cloud Foundry HTTP endpoint.
-
+The vmc client is written in Ruby and speaks JSON to a Cloud Foundry-compatible
+HTTP endpoint. It is at this layer which many companies are competing for your
+business. Thankfully, almost all have free for non-commercial use, academic,
+non-profit and other free tiers, so you can "test drive" their flavor of the
+cloud before forking over your money.
+
+A common misconception is that VMWare Cloud Foundry needs to be run on VMware
+infrastructure. That is not the case. While VMware vCloud is supported, Amazon
+(and compatible APIs) are also supported out of the box.
## Features
### Supported Languages
@@ -119,7 +126,7 @@ Supported languages in mainline:
* NodeJS 0.4.x, 0.6.x
* PHP 5.3, 5.4 (ActiveState, AppFog, paas.io)
* Erlang
-* Java
+* Java and JVM-based languages, such as Groovy
Supported languages in forks:
@@ -156,7 +163,9 @@ Mainline:
Forks:
-?
+Currently awaiting data.
+
+As for missing services in mainline, I would greatly like to see CouchDB supported.
## Deploying your App to a Cloud Foundry Instance
@@ -175,10 +184,12 @@ do that from the command line:
## How Do I Choose a Cloud Foundry Provider?
-This question depends on:
+This question depends on these questions in the following order:
* Do you need complete privacy?
* Do you want to DIY it or pay somebody else to worry?
+ * Which languages do I need supported?
+ * Do I need value-add services such as dynamic scaling?
In theory, you can run Cloud Foundry on servers nested inside a Faraday cage in
your basement. You would have a totally isolated private cloud. The opposite
@@ -193,6 +204,26 @@ compliant, complete isolation and privacy is required. But if you are writing a
social-networking web application, running in a shared cloud environment is
perfectly reasonable.
+At this point, you will know if you need to be private or not-private. Now you
+will need to choose a provider that supports the set of languages that you
+want. For instance, currently only ActiveState Stackato support Perl 5, so if
+you want to use Perl, your current only option is to run your own cloud or use
+Stackato. On the other hand, both AppFog and Paas.io support PHP, so you could
+choose between either. New Cloud Foundry based startups and forks are being
+announced almost weekly, so the options are constantly changing.
+
+The last question to answer is the need for value-add services such as
+auto-scaling. Auto-scaling is the process of the application being monitored
+and dynamically scaled as needed. For instance, usually your web app is fine
+with a single PostgreSQL database and a single web server. But then you get
+Slashdot'ed! (The author does not read Reddit). Auto-scaling would spin up as
+many slave read-only database servers, load balancers and web servers to handle
+the tsunami of traffic. When the traffic spike is over, auto-scaling reduces
+the number of servers to the needed amount. This process, if it works right,
+can greatly reduce costs, since you only need to pay for virtualized hardware
+when you actually need it. If you had to own the physical hardware to support
+your highest traffic spike, your resources would sit around unused most of the
+time.
## Installation
@@ -464,6 +495,11 @@ resources.
VMware's Cloud Application Platform. This is the central Git repository which
contains the Cloud Foundry codebase.
+### vcloud
+
+VMWare's IaaS which is comprised of various VMWare products together with a
+vCloud API.
+
### [vmc](https://github.com/cloudfoundry/vmc)
Stands for "VMware Cloud" or "VMware controller" or whatever you want it to mean,

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