That sounds great, Tom! I was traveling yesterday and didn't see this
thread and your good list of questions until just now. I was just about
ready to pipe in and say, "These sound like great questions for the User
FAQ!," but I see you've got that covered.
Gail
Tom Amiro wrote:
> Shreedhar,
>
> Super answers. I'll work on getting them into the new user FAQ as Bill
> Shannon suggested.
>
> Tom
>
> Shreedhar Ganapathy wrote:
>
>>
>> I'll try answering some
>>
>> Tom Amiro wrote:
>>
>>> Hi,
>>>
>>> I'd like to share questions we were asked by attendees at our
>>> Glassfish pod during Boston Tech Days. For some, I'd like to get back
>>> to the person with a good answer; for others, it just would be good
>>> to know more.
>>>
>>> * Is there a way to secure communication between client and
>>> service without having to manually install certificates on
>>> systems? Maybe an API to create certificates or a way to
>>> dynamically establish trust?
>>> * Is there a simple way to change the admin user's password using
>>> the Admin Console?
>>> * In reference to the Clusterjsp demo we showed, one attendee
>>> asked what are instances and is there any legitimate use for
>>> having a cluster on a single machine?
>>>
>> Instances are Java EE server processes to which Java EE applications
>> can be deployed and served from. In a clustered environment, a number
>> of instances are created to help distribute the load of incoming
>> requests (assuming these are fronted by a load balancer or an IP
>> sprayer) and to build redundancy for continued availability of service
>> without interruption due failure/crash of one or more instances in the
>> cluster. In other words, a cluster of instances prevents a single
>> point of failure in the software layer of your topology.
>> Going a step further, session state replication provides continued
>> availability of both service and session data so that site's customers
>> can be agnostic to failures of software processes/hardware.
>>
>> Having a cluster on a single machine limits the ability to
>> horizontally scale and creates a single point of failure (that of the
>> machine's failure). So for a non-mission critical business, one may
>> choose to have a (hopefully) multi (core or) cpu, single machine with
>> sufficient RAM to host a cluster of instances to save space, cost and
>> possibly energy costs. Ideally two boxes at the minimum with 2 network
>> interfaces each would help bring hardware redundancy for any software
>> service that is being offered in a cluster of instances.
>>
>>
>>> * A few persons wanted to see lists of who (companies) are using
>>> GF. We showed them the blogs.sun.com/stores page, but is there
>>> a more comprehensive list?
>>>
>> correction on the link : http://blogs.sun.com/stories
>>
>>> * Others asked for statistics on the market share of GF compared
>>> to other Application Servers.
>>> * Of course we got the question from quite a few: What is an
>>> application server?
>>>
>> A piece of software that serves applications through the internet to
>> provide a service.
>> Java EE Application Servers do this by implementing the Java EE
>> Specification.
>>
>>> * Why is glassfish named glassfish?
>>>
>> Its see-through :)
>>
>>> * Does the portal server run on GF?
>>> * Does java.net run on GF?
>>>
>>> * One very interested person asked, do you have a sales kit,
>>> promotional material, brochure, fliers, datasheet, etc that I
>>> can take to my management to get them interested in GF?
>>> * Does GF support Ajax?
>>>
>> Checkout http://ajax.dev.java.net or http://jmaki.dev.java.net and
>> http://blueprints.dev.java.net for real world ways to use /Web 2.0
>> /technologies with Java EE.
>>
>>> * Does GF have something comparable to IBM's JAM plugin to
>>> support mainframe updates?
>>> * For load balancing, does GF have a plugin for Apache web server?
>>>
>> Sun Java System Application Server 9.1 officially supports load
>> balancing using Apache Web Server and mod_jk plugin, also Microsoft
>> IIS 6 and Sun's Web Server 6.1sp5 and 7.0
>> A number of blog entries have been written in blogs.sun.com or
>> java.net on supporting Apache web server for load balancing and
>> proxying to GF.
>> One such example with additional links in it:
>> http://blogs.sun.com/dadelhardt/entry/loadbalancing_with_mod_jk_and_glassfish
>>
>>
>> --Shreedhar
>>
>>> Tom
>>
>>
>
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