Anatomy of a Modern Node.js Application Architecture
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This document provides an overview of the typical components and architecture of a modern Node.js application, including web and application servers, a queue, worker servers, databases, caches, and how to monitor transactions as they flow through the distributed system. It also describes how to configure AppDynamics to monitor errors, transactions, hardware resources, calls to external services and databases, and end user experience for Node.js applications.
![Anatomy of a Modern Node.js
Application Architecture
WEB SERVER
SLOW CODE EXECUTION
QUEUE SERVER
WORKER SERVERS
CACHE
ERRORS
VIEW RUNTIME ERRORS
• Troubleshoot > Errors > Error Transactions
• Double-click Transaction Snapshot
• Drill Down > Error Details
DATABASE
INTERNAL WEBSERVICES
DISTRIBUTED TRANSACTIONS
CONFIGURE & VIEW
• Navigate to AppDynamics Exchange
• Search for your server
• Download and Install extension
• Navigate back to AppDynamics Controller
• Analyze > Metric Browser
• Find your extension
VIEW
• Navigate to Application Flowmap
• View latency to your cache server
CACHE
CONFIGURE & VIEW
• Navigate to AppDynamics Exchange
• Search for your server
• Download and Install extension
• Navigate back to AppDynamics Controller
• Analyze > Metric Browser
• Find your extension
INTERNAL WEBSERVICES WEB SERVER
TRANSACTIONS
CONFIGURE BUSINESS TRANSACTIONS
• Navigate to Business Transactions
• Right-click Transaction
• Choose conguration options to organize
transactions
CONFIGURE TRANSACTION DISCOVERY
• Congure Instrumentation Select Node.js Tier
• Scroll down to Custom Rules
• Create rules to group, match and exclude your
transactions
INFO
In a service-oriented environment the
performance indicators of the distributed nature
of the transaction is an integral aspect of
characterizing transaction performance.
AppDynamics applies distributed transaction
tracing to for all business transactions as well as
for the entire application. Using a tag, trace, and
learn approach, AppDynamics traces the
transaction context across all tiers, including
JVMs, CLRs, Node.js servers, and calls to HTTP,
SOAP, databases, third party web services, etc.
ANALYSIS
VIEW
• Navigate to your Application Dashboard
Flowmap
• Find Queue Server
• View latency to your queue server
VIEW
• Application Dashboards Transaction
Snapshots
• Find transactions that speak to your Queue
server
• Double-click Start Drill Down Call Graph
• Find method call that sends job, click to
correlate to downstream worker server for
associated call graph
QUEUE SERVER WORKER SERVERS
INFO
When a Node.js application communicates with
an external component that is not being
monitored as part of the same business
application, such as a database or a message
queue, you can monitor the performance data for
the communication.
AppDynamics displays distributed communication
performance in the business application and
business transaction ow maps.
NODE.JS
VIEW UNCAUGHT EXCEPTIONS
• Troubleshoot Errors Exceptions
• Double-click Exception
• Double-click Transaction Snapshot
• Drill Down Error Details
CONFIGURE ERROR REPORTING
• Congure Instrumentation Error Detection
Node.js - Error Detection
• Congure Ignored Exceptions or Logged
Messages
NODE.JS
CONFIGURE TRANSACTION API
• Use the custom API functions to manually
dene the beginning and ending of a
transaction from within your code
• Navigate to Business Transactions to view
Hint: This is useful in cases where you have a
transaction executing jobs in an innite loop and
want to register each job as a transaction.
NODE.JS
VIEW APPDYNAMICS MACHINE AGENT
• Download Install Machine Agent
• Navigate to Servers App Servers
[Your Node.js Tier] [Node.js Node]
• Select Hardware
VIEW HARDWARE
• Application Dashboard Transaction Snapshots
Show Filters
• Select search criteria Search
• Double-click Transaction Snapshot
• Start Drill Down Hardware
COMPARE RELEASES
• Analyze Compare Releases
• Select time ranges to compare
VIEW NODE.JS METRICS
• Analyze Metric Browser Application
Infrastructure Performance
• Expand [Node.js tier] Expand Node.js metrics
• View specic additional Node.js metrics
EXTERNAL WEBSERVICES
EXTERNAL WEBSERVICES
VIEW
• Servers remote services
• Double-click remote service
VIEW
• Troubleshoot Slow Response Times
Slowest DB Remote Service Calls
• Select HTTP
DATABASE
DATABASE
VIEW
• Navigate to Servers Databases
• Double-click your DB
• Select your Node.js Tier
• View slow queries
VIEW
• Application Dashboard Transaction Snapshots
Show Filters
• Select search criteria Search
• Double-click Transaction Snapshot
• Start Drill Down SQL Calls
VIEW
• Navigate to Application Dashboard Flowmap
• Right-click on Database
• Select ‘View in Database Monitoring’
WEB
IOS / ANDROID
CONFIGURE
• End User Experience Web Pages
AJAX Requests
• Double-click on selected Page
• View Summary Timeline to locate bottleneck
VIEW
• End User Experience Web Analyze
• Focus on location, browser type, device type,
and other combinations to analyze performance.
END USER EXPERIENCE
SET HEALTH RULES
• Alert Respond Health Rules
VIEW TRANSACTION SNAPSHOT
• Application Dashboard Transaction Snapshots
Show Filters
• Select search criteria Search
• Double-click Transaction Snapshot
• Start Drill Down
• Click on Call Graph OR Hot Spots to view call
graph
• If Process Snapshot exists, it will have a
clickable GUID in the Summary tab
VIEW PROCESS SNAPSHOT
• Navigate to Servers App Servers [Your
Node.js Tier] [Node.js Node]
• Click ‘Collect Process Snapshots’
• Enter a time between 1 and 60 seconds
• Double-click Process Snapshot in list to view](https://image.slidesharecdn.com/appdanatomymodernnodejsposterinside-141107163853-conversion-gate02/85/Anatomy-of-a-Modern-Node-js-Application-Architecture-1-320.jpg)
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Anatomy of a Modern Node.js Application Architecture
- 1. Anatomy of a Modern Node.js Application Architecture WEB SERVER SLOW CODE EXECUTION QUEUE SERVER WORKER SERVERS CACHE ERRORS VIEW RUNTIME ERRORS • Troubleshoot > Errors > Error Transactions • Double-click Transaction Snapshot • Drill Down > Error Details DATABASE INTERNAL WEBSERVICES DISTRIBUTED TRANSACTIONS CONFIGURE & VIEW • Navigate to AppDynamics Exchange • Search for your server • Download and Install extension • Navigate back to AppDynamics Controller • Analyze > Metric Browser • Find your extension VIEW • Navigate to Application Flowmap • View latency to your cache server CACHE CONFIGURE & VIEW • Navigate to AppDynamics Exchange • Search for your server • Download and Install extension • Navigate back to AppDynamics Controller • Analyze > Metric Browser • Find your extension INTERNAL WEBSERVICES WEB SERVER TRANSACTIONS CONFIGURE BUSINESS TRANSACTIONS • Navigate to Business Transactions • Right-click Transaction • Choose conguration options to organize transactions CONFIGURE TRANSACTION DISCOVERY • Congure Instrumentation Select Node.js Tier • Scroll down to Custom Rules • Create rules to group, match and exclude your transactions INFO In a service-oriented environment the performance indicators of the distributed nature of the transaction is an integral aspect of characterizing transaction performance. AppDynamics applies distributed transaction tracing to for all business transactions as well as for the entire application. Using a tag, trace, and learn approach, AppDynamics traces the transaction context across all tiers, including JVMs, CLRs, Node.js servers, and calls to HTTP, SOAP, databases, third party web services, etc. ANALYSIS VIEW • Navigate to your Application Dashboard Flowmap • Find Queue Server • View latency to your queue server VIEW • Application Dashboards Transaction Snapshots • Find transactions that speak to your Queue server • Double-click Start Drill Down Call Graph • Find method call that sends job, click to correlate to downstream worker server for associated call graph QUEUE SERVER WORKER SERVERS INFO When a Node.js application communicates with an external component that is not being monitored as part of the same business application, such as a database or a message queue, you can monitor the performance data for the communication. AppDynamics displays distributed communication performance in the business application and business transaction ow maps. NODE.JS VIEW UNCAUGHT EXCEPTIONS • Troubleshoot Errors Exceptions • Double-click Exception • Double-click Transaction Snapshot • Drill Down Error Details CONFIGURE ERROR REPORTING • Congure Instrumentation Error Detection Node.js - Error Detection • Congure Ignored Exceptions or Logged Messages NODE.JS CONFIGURE TRANSACTION API • Use the custom API functions to manually dene the beginning and ending of a transaction from within your code • Navigate to Business Transactions to view Hint: This is useful in cases where you have a transaction executing jobs in an innite loop and want to register each job as a transaction. NODE.JS VIEW APPDYNAMICS MACHINE AGENT • Download Install Machine Agent • Navigate to Servers App Servers [Your Node.js Tier] [Node.js Node] • Select Hardware VIEW HARDWARE • Application Dashboard Transaction Snapshots Show Filters • Select search criteria Search • Double-click Transaction Snapshot • Start Drill Down Hardware COMPARE RELEASES • Analyze Compare Releases • Select time ranges to compare VIEW NODE.JS METRICS • Analyze Metric Browser Application Infrastructure Performance • Expand [Node.js tier] Expand Node.js metrics • View specic additional Node.js metrics EXTERNAL WEBSERVICES EXTERNAL WEBSERVICES VIEW • Servers remote services • Double-click remote service VIEW • Troubleshoot Slow Response Times Slowest DB Remote Service Calls • Select HTTP DATABASE DATABASE VIEW • Navigate to Servers Databases • Double-click your DB • Select your Node.js Tier • View slow queries VIEW • Application Dashboard Transaction Snapshots Show Filters • Select search criteria Search • Double-click Transaction Snapshot • Start Drill Down SQL Calls VIEW • Navigate to Application Dashboard Flowmap • Right-click on Database • Select ‘View in Database Monitoring’ WEB IOS / ANDROID CONFIGURE • End User Experience Web Pages AJAX Requests • Double-click on selected Page • View Summary Timeline to locate bottleneck VIEW • End User Experience Web Analyze • Focus on location, browser type, device type, and other combinations to analyze performance. END USER EXPERIENCE SET HEALTH RULES • Alert Respond Health Rules VIEW TRANSACTION SNAPSHOT • Application Dashboard Transaction Snapshots Show Filters • Select search criteria Search • Double-click Transaction Snapshot • Start Drill Down • Click on Call Graph OR Hot Spots to view call graph • If Process Snapshot exists, it will have a clickable GUID in the Summary tab VIEW PROCESS SNAPSHOT • Navigate to Servers App Servers [Your Node.js Tier] [Node.js Node] • Click ‘Collect Process Snapshots’ • Enter a time between 1 and 60 seconds • Double-click Process Snapshot in list to view