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  1.  Home
  2. WEB400
  3. October 2015

Re: Hosting a Large Number of Node Apps on the IBM i

It's the AIX version. To learn more how to adopt perzl first read this
article: http://bit.ly/how-to-contribute-to-open-source-on-ibmi

Then check out this open source project that holds the code for wwwperzl.sh
(mentioned in the article): https://bitbucket.org/litmis/ibmiperzl



Aaron Bartell
litmis.com - Services for open source on IBM i


On Wed, Oct 14, 2015 at 6:20 AM, Henrik Rützou <hr@xxxxxxxxxxxx> wrote:

Aaron

I don't see any download for IBM I only for Linux and AIX?

On Wed, Oct 14, 2015 at 1:16 PM, Aaron Bartell <aaronbartell@xxxxxxxxx>
wrote:

I have nginx running on IBM i. You can get it from perzl.org.
On Oct 14, 2015 4:39 AM, "Henrik Rützou" <hr@xxxxxxxxxxxx> wrote:

Gents

just because you want to run node.js apache don't disappear.

Most of us would probably want to have a mixed environment and no one
says that you can't run node.js as a proxy under apache - very similar
to
routing CGI requests.

If you want to load balance your environment you can also put a NGiNX
(engine-x) HTTP server in front of both your apache and your node.js
servers.NGiNX is designed to be able to handle C10K+ concurrent
requests

This means that you are able to run concurrent node.js servers on IBM I
very similar to apache's QZSRCGI stack.

Remember that node.js is single treaded and will only use one core at
the time on any hw-platform.

Unfortunately NGiNX hasn't been ported to IBM I yet so you either has
to run it in a Linux/AIX LPAR or on another machine.

On Wed, Oct 14, 2015 at 8:57 AM, Kevin Turner <
kevin.turner@xxxxxxxxxxxxxxx>
wrote:

"Routing steps" is probably acceptable terminology, although I think
they
are referred to as just "routes". We have to careful not to confuse
routes
within an app with the higher level route to the app in the first
place.
The latter is the top level URL:port on which the app is listening
and
the
former is the internal routing to controllers handling the Ui for the
app.
I am sure Kelly is talking about the top level routing to the app and
how
to handle that as opposed to the question of internal routing to
"screens"
within the app.

Sent from my iPad

On 14 Oct 2015, at 05:03, Nathan Andelin <nandelin@xxxxxxxxx> wrote:


We are talking stateless here so you will never have 20.000
routing
steps
to handle at the same time unless you have millions of users..


Henrik,

Maybe "routing steps" is not the right term.

All HTTP requests need to be routed to specific JavaScript
functions
in
Node.js.

The idea is to use URLs to "route" requests appropriately. Say a
URL
pattern such as the following is used to route HTTP requests:

/major-system/module/application/requested-action

Even a moderately scope system could very well exceed 20,000 unique
URLs
for more than 20,000 possible JavaScript functions (request
handlers).

So maybe routing is handled with a a series of nested conditions:

When URL-major-system = "human_resources" ...
When URL-module = "payroll" ...
When URL-application = "maintain_employee_payroll_deductions" ...
When URL-requested-action = "list_employees" ...

Since you mentioned having a "stateless" environment, that raises
the
likelihood of managing state for each user, and possibly for each
application identified in a URL. Wouldn't some part of the URL be
used
as a
key for saving and restoring user state?
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