AppSphere 15 - PHP, Node.js and Python Deep Dive

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

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

4.1 for PHP
Cross App Correlation
Backend Naming Rules
HTTP Data Collectors
PHP 5.6
API Functions

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

4.1 for Python
Distributed Transaction Correlation
Cross-App Correlation
Custom Match/Exclude Rules
Linux & Mac
OOTB WSGI Framework Support
API Functions

Challenge
Multiple PHP “applications” on a
single server

api.acme.com
login.acme.com
admin.acme.com
www.acme.com

Before
n applications on the same server
=
1 application in AppDynamics

Today
n applications on the same server
=
n applications in AppDynamics

Before
appdynamics_agent.ini

Today
appdynamics_agent.ini
httpd.conf
.htaccess

More Flexibility with (same) Configs
agent.controller.hostName
agent.controller.port
agent.applicationName
agent.tierName
agent.nodeName
agent.accountName
agent.accountAccessKey

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>
<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>

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

Challenge
Heavy Memory Consumption by
the Node.js Application

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.

“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

Challenge
A Python Application Executing
Jobs in an Infinite While Loop

The Loop
setup()
while (true):
do_work()
teardown()

Python Agent API Functions
Functions made available
to the application code to
further tailor your APM
solution.

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()

Custom Exit Calls
start_exit_call()
…
end_exit_call()

API Functions
•  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)

By The Way...
API Functions Are Available Today For

“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

Decoupling Architecture
+
Mindset
=
Merging Teams

4.2 Roadmap Goal
•  Multi-Node Support
•  SELinux
•  NuSOAP Exit Calls
•  PostgreSQL
•  Node.js 4.0 & 5.0
•  Allocation Snapshots
•  Transaction Analytics
•  Heroku Support
•  Windows Support
•  EUM Correlation
•  API Functions
•  Data Collectors
•  MongoDB

AppSphere 15 - PHP, Node.js and Python Deep Dive

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