top 10 reasons to migrate to gradle
TRANSCRIPT
About author• Works in IT since 2000• 12 year of Java SE/EE experience• Regular speaker at Java conferences• Author of “Development of Java applications” and
“Main errors in Java programming ”books• Founder of http://it-simulator.com• 3 years of Gradle usage
Agenda
Agenda
Build systems
Google trends
Job trends
Reasons• Actuality• Programmability• Compactness• JVM-based and Java-based• DSL and API• Plugins• Integration• Configurations• Flexibility• Performance
Gradle• Development started in Apr 2008• Current version 2.7 released in September 2015• Default build tool for Android OS
Slogan• Make the impossible possible• Make the possible easy• Make the easy elegant
Build structure
Actuality
Version Release dateMaven 1.0 2004Maven 2.0 2005Maven 3.0 2010Maven 3.1 2013Maven 3.3 2015
Actuality
Version Release dateGradle 0.7 2009Gradle 1.0 2012Gradle 1.5 2013Gradle 2.0 2014Gradle 2.7 2015
Programmability
Programmability
Compactness
Ant plugin
Groovy plugin
Echo plugin
Gradle
Maven
Gradle
Maven
Gradle
Maven
Gradle
Transitive
Maven. Step #1
Maven. Step #2
Gradle
JVM and Java-based
DSL and API
DSL
Plugin• Reusable pieces of build logic• Can be used in different projects/builds• Script and binary plugins• 110 built-in and 580 custom plugins
Maven
Gradle
Plugin portal
Custom plugin
gradle helloWorld
Language plugins
Java Groovy
Scala C/C++
Objective-C
Integrates with everything
Version management
Version management
Maven Scope
Configurations
Performance
Cache everything
• Remote metadata and artifacts• Transitive dependency resolution• Build execution plan• Plugin inputs and outputs• Test results
Daemon• Improves startup and execution time of Gradle• Initial Gradle command forks daemon process• Subsequent Gradle commands reuse the build
daemon• If daemon is currently busy then new daemon
process is started on-demand• Useful for small tasks execution• Expires after 3 hours of idle time
gradle.properties
• org.gradle.daemon=true• org.gradle.configureondemand=true• org.gradle.parallel=true• org.gradle.java.home=C:\\Program Files\\Java\\
jdk1.8.0_60\\• org.gradle.jvmargs=-Xmx100m
Test execution
# of threads
H2 – time(sec) MySQL – time(sec)
1 24,4 27,52 31,1 36,94 46,2 51,18 71,1 80,5
Comparison• Maven 3.3.3• Gradle 2.7• JDK 1.8.0.60• Intel Core i7, 4 cores, 16 GB• Multi-project and single project builds• Optimized and default modes
Multi-project
• Optimization in Gradle speeds up 2-3 times• Gradle in optimized mode works 1.5 – 2.5 times
faster than Maven in any mode
Operation Gradle (opt)
Gradle (daemon)
Gradle Maven
Maven (parall)
Build(sec) 6,45 7.29 12,16 10,53 11,23Inc build(sec)
1,42 1,59 4,29 3,79 3,83
Clean(sec) 0,93 1,02 2,75 1,48 1,44
Gradle
Optimized Not optimized
Maven
Optimized Not optimized
Single project
• Optimization in Gradle speeds up 2-2.5 times• Gradle in optimized mode works 1.5 – 2 times
faster than Maven in any mode
Operation Gradle (opt)
Gradle (daemon)
Gradle Maven
Maven (parall)
Build(sec) 5,19 5,13 9,99 6,69 6,46Inc build(sec)
1,38 1,40 4,08 3,27 3,08
Clean(sec) 0,87 0,87 2,58 1,24 1,21
Behind the scene
Future
No migration• Trivial project• Maintenance phase• A lot of Maven plugins
Theory
Practice• https://github.com/hibernate/hibernate-orm• https://github.com/SpringSource/spring-
framework• https://github.com/gradle/gradle
