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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
2015 IN REVIEW
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
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
4.1 for Python
Distributed Transaction Correlation Cross-App Correlation Custom Match/Exclude Rules Linux & Mac OOTB WSGI Framework Support API Functions
Copyright © 2015 AppDynamics. All rights reserved. 6
PHP DEEP DIVE
Challenge
Multiple PHP “applications” on a single server
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api.acme.com login.acme.com admin.acme.com www.acme.com
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Before
n applications on the same server =
1 application in AppDynamics Copyright © 2015 AppDynamics. All rights reserved. 10
Today
n applications on the same server =
n applications in AppDynamics Copyright © 2015 AppDynamics. All rights reserved. 11
Copyright © 2015 AppDynamics. All rights reserved. 12
Before
appdynamics_agent.ini
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Today
appdynamics_agent.ini
httpd.conf
.htaccess
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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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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>
Copyright © 2015 AppDynamics. All rights reserved. 17
Copyright © 2015 AppDynamics. All rights reserved. 18
Copyright © 2015 AppDynamics. All rights reserved. 19
Multi-Node Support for PHP
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
NODE.JS DEEP DIVE
Challenge
Heavy Memory Consumption by the Node.js Application
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Memory Leak Diagnostics
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
Copyright © 2015 AppDynamics. All rights reserved. 26
Copyright © 2015 AppDynamics. All rights reserved. 27
Copyright © 2015 AppDynamics. All rights reserved. 28
“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
PYTHON DEEP DIVE
Challenge
A Python Application Executing Jobs in an Infinite While Loop
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The Loop
setup() while (true):
do_work() teardown()
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Python Agent API Functions
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Functions made available to the application code to
further tailor your APM solution.
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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
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start_exit_call() …
end_exit_call()
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)
Copyright © 2015 AppDynamics. All rights reserved. 37
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
Copyright © 2015 AppDynamics. All rights reserved. 38
Copyright © 2015 AppDynamics. All rights reserved. 39
DEVELOPER TRENDS
Decoupling Architecture +
Mindset =
Merging Teams Copyright © 2015 AppDynamics. All rights reserved. 41
WHAT’S COMING IN 4.2?
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
Thank You
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