Skip to content

Instantly share code, notes, and snippets.

@Teino1978-Corp

Teino1978-Corp/ Tuning Your Grails Applications.md

Created December 10, 2015 07:24
Show Gist options
  • Save Teino1978-Corp/2c49774abbd1347b3e91 to your computer and use it in GitHub Desktop.
Save Teino1978-Corp/2c49774abbd1347b3e91 to your computer and use it in GitHub Desktop.
Download ZIP
Raw
Tuning Your Grails Applications.md

Tuning Your Grails Applications

Profiling

Server-side tools

  • Spring Insight
  • Profiler Plugin
  • Hibernate logging
  • P6Spy
  • Hibernate Statistics
    • App Info & Hibernate Stats Plugins

UI tools

  • Chrome/Safari/IE developer tools
  • Firebug (Firefox only)
  • Opera Dragonfly (opera only)
  • Google Speed Tracer (chrome only)
    • Spring Insight integration
  • ySlow (Firefox only - requires Firebug)
  • PageSpeed (Chrome & Firefox)

Tuning

Database performance

  • Reduce the number of queries
    • Use appropriate fetch mode
    • Don't fetch data you don't need
  • Tune your queries
    • Add appropriate indexes
    • Don't be afraid to change the model
  • Beware large hasMany collections
    • Sets and lists always loaded when adding item
    • Bag implementation coming in Grails 2
    • Or use linking domain class (vis Spring Security Core plugin)
  • Caching
    • Hibernate 2nd-level cache
    • Distributed cache/data grid
      • Terracotta
      • GemFire
  • Alternative data store!

Business login

  • Caching
    • Spring Cache Plugin for service methods
  • Go asynchronous
    • Ideal for long running tasks
    • Spring Events, Executor
    • Messaging: JMS, AMQP
  • Fall back to Java
    • Limited applicability
    • Numerically intensive tasks?
  • Groovy++?
    • One JAR
    • @Typed on class or method

Network and UI

  • Reduce view processing
    • Spring Cache plugin for views
  • Reduce number of requests (latency)
    • Expires HTTP header
    • Bundle CSS & Javascript files
    • Image spriting
  • Reduce amount of data transferred to browser (bandwidth)
    • Minify Javascript
    • Compress data
  • Plugins
    • Performance UI, JAWR
    • Resources et al.

Compressing page content

  • Container-dependent
    • Tomcat has connector setting
    • For Jetty, add GzipFilter to your web.xml

Resources plugin

  • Modularise static content
  • Bundle files of the same type
  • Caching Resources plugin
    • Sets HTTP Expires header 1 year ahead
    • Gives static files a unique name
  • Zipped Resources plugin
    • Gzips static content
    • Can exclude files by extension

Rich UIs

  • Browser does the work
  • Minimal traffic
  • GWT, Flex, etx.
  • Data transfer
    • JSON
    • XML
    • GWT-RPC

Summary

  • Profile before you optimise!
  • Several tools available for profiling
  • Several plugins available for improving performance
  • Many techniques apply to any web application
  • Law of diminishing returns
    • At some point, further performance improvements aren't worth the required effort
  • Resources will be in Grails 2.0

Resources

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment