A front end won't really slow things down significantly (although you are adding another communication layer). You probably won't need to do it though unless you are, as Aaron suggests, needing load balance across multiple instances. Then Apache is an option as is nginx. Personally I haven't found a need to do that on an IBMi platform yet.
-----Original Message-----
From: WEB400 [mailto:web400-bounces@xxxxxxxxxxxx] On Behalf Of Kelly Cookson
Sent: 21 August 2015 18:24
To: Web Enabling the IBM i (AS/400 and iSeries)
Subject: Re: [WEB400] Starting a node program so it keeps running without interactive jobs staying open.
Aaron,
Thanks again. I really appreciate the help.
I am a little curious about using Apache as a front-end (same as reverse proxy?) for a web server or a REST service running in NodeJS. Would setting up Apache as a reverse proxy diminish the speed associated with the NodeJS event loop? Would the Apache web server slow down requests getting put into the queue of the NodeJS event loop, or slow down the responses coming back from the NodeJS event loop?
I'm asking, not suggesting. I have no idea. It would be nice to know why it would slow things down or why it would not. Maybe it's not even a well formed question.
Thanks,
Kelly Cookson
IT Project Leader
Dot Foods, Inc.
1.217.773.4486 ext. 12676
kcookson@xxxxxxxxxxxx
-----Original Message-----
From: WEB400 [mailto:web400-bounces@xxxxxxxxxxxx] On Behalf Of Aaron Bartell
Sent: Friday, August 21, 2015 12:10 PM
To: Web Enabling the IBM i (AS/400 and iSeries)
Subject: Re: [WEB400] Starting a node program so it keeps running without interactive jobs staying open.
In its simplest form you can do the following. Eventually you will want to add more options (i.e. start multiple instances on different ports for load balancing with a front-ending Apache/nginx instance).
SBMJOB JOB(QSH CMD('/dir/start.sh'))
---start.sh---
#!/usr/bin/sh
cd /dir
node sample.js
Aaron Bartell
litmis.com - Open Source and IBM i. No Limits.
On Fri, Aug 21, 2015 at 12:04 PM, Kelly Cookson <KCookson@xxxxxxxxxxxx>
wrote:
I have developed a "hello world" web server using JavaScript and
NodeJS. I am starting the web server using interactive sessions. I
open a 5250 session, then open an interactive qshell session, then run
the following
command:
node /mydirectory/sample.js
When the "hello world" web server is running, there are three jobs active:
1. My interactive 5250 session.
2. The qshell interpreter (QZSHSH)
3. A job that appears to be the node program (QP0ZSPWT).
But when I end the qshell session the node program (the QPOZSPWT job)
also ends. So my "hello world" web server is no longer running.
How do I get my "hello world" web server to run in NodeJS without me
having to leave an interactive qshell session open?
Thanks,
Kelly Cookson
IT Project Leader
Dot Foods, Inc.
1.217.773.4486 ext. 12676
kcookson@xxxxxxxxxxxx
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