Thiago Alessio's talk at Fullstack.JS Berlin v0.2.0 (11.Feb.2016) Video: https://youtu.be/ZU0pCe0cCsY

1. Running
node.js
as a service behind
ngnix/varnish

2. why?

3. $ ssh me@production.com
me@srv:~$ node /opt/myapp/index.js

4. $ ssh me@production.com
me@srv:~$ node /opt/myapp/index.js
X

5. $ ssh me@production.com
me@srv:~$ screen

6. Screen version 4.00.03jw4 (FAU) 2-May-06
Copyright (c) 1993-2002 Juergen Weigert, Michael Schroeder
Copyright (c) 1987 Oliver Laumann
This program is free software; you can redistribute it and/or modify it under the terms of the GNU
General Public License as published by the Free Software Foundation; either version 2, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License along with this program (see the file
COPYING); if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301 USA.
Send bugreports, fixes, enhancements, t-shirts, money, beer & pizza to screen@uni-erlangen.de
To use byobu (formerly screen-profiles), exit screen and run 'byobu'.
[Press Space or Return to end.]

7. me@srv:~$ node /opt/myapp/index.js

8. me@srv:~$ node /opt/myapp/index.js
[detached from 2254.pts-0.srv]
me@srv:~$

9. me@srv:~$ node /opt/myapp/index.js
[detached from 2254.pts-0.srv]
me@srv:~$
X

10. me@srv:~$ while true ; do
> node /opt/myapp/index.js
> done

11. me@srv:~$ while true ; do
> node /opt/myapp/index.js
> done
X

12. •forever https://github.com/foreverjs/forever
•monit https://mmonit.com/monit/
•pm2 http://pm2.keymetrics.io
•systemd https://freedesktop.org/wiki/Software/systemd/
•upstart http://upstart.ubuntu.com
•etc …

13. upstart

14. # /opt/myapp/index.js
require("http").createServer(function (req, res) {
res.writeHead(200, { "Content-Type": "text/html" });
res.end("<h1>Hello, Fullstack JS Berlin!</h1>");
}).listen(1337, "0.0.0.0");

15. $ sudo vi /etc/init/myapp.conf

16. # /etc/init/myapp.conf
description "myapp"
author "thiagoalessio"
start on started mountall
stop on shutdown
respawn
respawn limit 99 5
script
exec sudo -u myapp /usr/bin/node /opt/myapp/index.js >> /var/log/myapp.log 2>&1
end script
post-start script
echo "myapp was started" >> /opt/myapp/logs/myapp.log
end script

17. $ sudo start myapp
myapp start/running, process 1351

19. $ sudo stop myapp
myapp stop/waiting

21. •automatically starts
on machine boot
•easily update code
after deployments

36. super fast!

37. $ sudo vi /etc/varnish/default.vcl

38. # This is a basic VCL configuration file for varnish. See the vcl(7)
# man page for details on VCL syntax and semantics.
#
# Default backend definition. Set this to point to your content
# server.
#
backend default {
.host = "127.0.0.1";
.port = "1337";
}
#
# … rest of the file …

40. $ sudo stop myapp
myapp stop/waiting

49. concurrency

50. $ sudo vi /etc/nginx/sites-enabled/default

51. # /etc/nginx/sites-enabled/default
upstream varnish { server 127.0.0.1:6081; }
upstream nodejs { server 127.0.0.1:1337; }
server {
listen 80;
server_name _;
root /opt/myapp;
location ~* .(jpg|css|png)$ { access_log off; }
location /non-cacheable-content { proxy_pass http://nodejs; }
location / { proxy_pass http://varnish; }
}

53. thank you ;D
@thiagoalessio
github.com/thiagoalessio