Dynamic languages have helped development teams iterate more quickly, meeting agile business demands. The pace has quickened over the last decade, and today's lifecycle time-to-market is a fraction of what it once was. The challenges associated with this agility include maintaining velocity, while enabling product stability and performance. As application environments become decoupled into micro-services, the diversity of language and data storage behind services increase. This still requires the performance of the request, as the subsequent micro-services are called, along with how that data merges to form a single business transaction, pieced together by an AppDynamics snapshot. In this session, you'll learn how you can configure AppDynamics' PHP, Python and Node.js agents to further improve visibility across your application estate. Specifically, we'll review: - The new AppDynamics API functions made available by PHP, Python and Node.js for custom metric collection - The new AppDynamics Node.js agent's memory leak diagnostics - AppDynamics' newest application agent supporting Python applications - Tips and tricks across the AppDynamics dynamic language agents This deck was originally presented at AppSphere 2015. Presentation by Omed Habib

1. PHP, Node.js and Python Deep Dive
Omed Habib, Product Marketing

2. Agenda
2015
PHP
Node.js
Copyright © 2015 AppDynamics. All rights reserved. 2
Python
Developer Trends
4.2 Sneak Peak

3. 2015 IN REVIEW

4. 4.1 for PHP
Cross App Correlation
Backend Naming Rules
HTTP Data Collectors
PHP 5.6
API Functions
Copyright © 2015 AppDynamics. All rights reserved. 4

5. 4.1 for Node.js
Error Detection Using HTTP Return Codes
Node.js Backends Discovery & Grouping Rules
Object Instance Tracking
Node.js 0.12
API Functions
Copyright © 2015 AppDynamics. All rights reserved. 5

6. 4.1 for Python
Distributed Transaction Correlation
Cross-App Correlation
Custom Match/Exclude Rules
Linux & Mac
OOTB WSGI Framework Support
API Functions
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7. PHP DEEP DIVE

8. Challenge
Multiple PHP “applications” on a
single server
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9. api.acme.com
login.acme.com
admin.acme.com
www.acme.com
Copyright © 2015 AppDynamics. All rights reserved. 9

10. Before
n applications on the same server
=
1 application in AppDynamics
Copyright © 2015 AppDynamics. All rights reserved. 10

11. Today
n applications on the same server
=
n applications in AppDynamics
Copyright © 2015 AppDynamics. All rights reserved. 11

12. Copyright © 2015 AppDynamics. All rights reserved. 12

13. Before
appdynamics_agent.ini
Copyright © 2015 AppDynamics. All rights reserved. 13

14. Today
appdynamics_agent.ini
httpd.conf
.htaccess
Copyright © 2015 AppDynamics. All rights reserved. 14

15. More Flexibility with (same) Configs
agent.controller.hostName
agent.controller.port
agent.applicationName
agent.tierName
agent.nodeName
agent.accountName
agent.accountAccessKey
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16. Two Separate Apps, Same Server
<VirtualHost *:80>
DocumentRoot "/Library/WebServer/Documents"
ServerName localhost
ErrorLog "/private/var/log/apache2/error_log"
CustomLog "/private/var/log/apache2/access_log" common
php_value agent.applicationName FrontEnd
php_value agent.tierName FrontTier
php_value agent.nodeName front-node1
</VirtualHost>
Copyright © 2015 AppDynamics. All rights reserved. 16
<VirtualHost *:80>
DocumentRoot "/var/www"
ServerName test.local
<Directory "/var/www">
Options FollowSymLinks Multiviews
AllowOverride Options
Require all granted
</Directory>
ErrorLog "/private/var/log/apache2/error_log"
CustomLog "/private/var/log/apache2/access_log" common
php_value agent.applicationName API
php_value agent.tierName APItier
php_value agent.nodeName api-node1
</VirtualHost>

17. Copyright © 2015 AppDynamics. All rights reserved. 17

18. Copyright © 2015 AppDynamics. All rights reserved. 18

19. Copyright © 2015 AppDynamics. All rights reserved. 19

20. Multi-Node Support for PHP

21. Few points to consider…
• Available for beta after AppSphere
• 4.2 Controller is recommended
• All apps will share same proxy on server
• Licenses will stay same (per node) until adjusted
• Currently in beta, hoping to GA in 4.2
• Proxy functionality will be replaced with LibAgent in 2016
Copyright © 2015 AppDynamics. All rights reserved. 21

22. NODE.JS DEEP DIVE

23. Challenge
Heavy Memory Consumption by
the Node.js Application
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24. Memory Leak Diagnostics

25. V8 Manages Memory
Pro
• You don’t have to worry
about it.
• You don’t have to write
code to manage it.
Con
• You don’t have control
over it.
• You have to find a way to
find your memory leak.
Copyright © 2015 AppDynamics. All rights reserved. 25

26. Copyright © 2015 AppDynamics. All rights reserved. 26

27. Copyright © 2015 AppDynamics. All rights reserved. 27

28. Copyright © 2015 AppDynamics. All rights reserved. 28

29. “I can actually say we've had no outages
in production on a Node.js cluster, since
we've been porting over, and I can credit
a large part of that due to the monitoring
of AppDynamics.”
Stace Baal, Director of Engineering
@ eHarmony
Copyright © 2015 AppDynamics. All rights reserved. 29

30. PYTHON DEEP DIVE

31. Challenge
A Python Application Executing
Jobs in an Infinite While Loop
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32. The Loop
setup()
while (true):
do_work()
teardown()
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33. Python Agent API Functions
Copyright © 2015 AppDynamics. All rights reserved. 33
Functions made available
to the application code to
further tailor your APM
solution.

34. Copyright © 2015 AppDynamics. All rights reserved. 34
from
appdynamics.agent
import
api
as
appd
setup()
while
(true):
bt_handle
=
appd.start_bt('do
work’)
try:
do_work()
except
Exception
as
exc:
raise
finally:
appd.end_bt(bt_handle,
exc)
teardown()

35. Custom Exit Calls
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start_exit_call()
…
end_exit_call()

36. API Functions
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• init(environ=None, timeout_ms=NO_TIMEOUT)
• shutdown(timeout_ms=None)
• start_bt(name, correlation_header=None)
• end_bt(bt_handle, exc=None)
• add_snapshot_data(bt_handle, key, value)
• get_active_bt_handle(request)
• start_exit_call(bt_handle, exit_type, display_name,
identifying_properties, optional_properties=None)
• end_exit_call(exit_call_handle, exc=None)
• make_correlation_header(bt_handle, exit_call_handle)
• bt(name, correlation_header=None)
• exit_call(bt_handle, exit_type, display_name, identifying_properties,
optional_properties=None)

37. Copyright © 2015 AppDynamics. All rights reserved. 37
By The Way...
API Functions Are Available Today For

38. “The new Python agent by AppDynamics
brought the visibility that we’ve come to
expect from the AppDynamics Platform. It
didn't take long for us to qualify that this was
the solution for our deployments of over 3,000
Python instances”
Albert Kemner, Principal Engineer @ Gannett
Copyright © 2015 AppDynamics. All rights reserved. 38

39. Copyright © 2015 AppDynamics. All rights reserved. 39

40. DEVELOPER TRENDS

41. Decoupling Architecture
+
Mindset
=
Merging Teams
Copyright © 2015 AppDynamics. All rights reserved. 41

42. WHAT’S COMING IN 4.2?

43. 4.2 Roadmap Goal
• Multi-Node Support
• SELinux
• NuSOAP Exit Calls
• PostgreSQL
Copyright © 2015 AppDynamics. All rights reserved. 43
• Node.js 4.0 & 5.0
• Allocation Snapshots
• Transaction Analytics
• Heroku Support
• Windows Support
• EUM Correlation
• API Functions
• Data Collectors
• MongoDB

44. Thank You