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

Maybe he is running it in PASE

-----Original Message-----
From: WEB400 [mailto:web400-bounces@xxxxxxxxxxxx] On Behalf Of Henrik
Rützou
Sent: 14 October 2015 12:20
To: Web Enabling the IBM i (AS/400 and iSeries) <web400@xxxxxxxxxxxx>
Subject: Re: [WEB400] Hosting a Large Number of Node Apps on the IBM i

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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Segensworth East, Fareham
PO15 5TT

Company Registration Number 5021022.
Registered Office:
12-14 Carlton Place
Southampton, UK
SO15 2EA
VAT Registration Number 834 1020 74.
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