1. Enable Build Caching
Gradle’s build cache can reuse outputs from previous builds, reducing the need to re-execute tasks that produce the same results.
Example
Add the following to your gradle.properties file:
org.gradle.caching=true
2. Use the Latest Gradle Version
Gradle continuously improves build performance with each release. Using the latest version ensures you benefit from the latest optimizations.
Example
Upgrade Gradle using the Wrapper:
./gradlew wrapper --gradle-version <latest-version>
3. Configure Parallel Execution
Gradle can run tasks in parallel, taking advantage of multi-core processors to speed up the build process.
Example
Add the following to your gradle.properties file:
org.gradle.parallel=true
4. Use Configuration on Demand
Configuration on demand can improve performance by configuring only necessary projects during a build.
Example
Add the following to your gradle.properties file:
org.gradle.configureondemand=true
5. Avoid Unnecessary Annotation Processing
Annotation processors can significantly slow down builds. Use only necessary annotation processors and avoid using them in modules where they are not needed.
Example
Disable unused annotation processors in your build.gradle file:
dependencies {
annotationProcessor 'com.google.dagger:dagger-compiler:2.41'
// Avoid adding annotation processors here that are not needed
}
6. Use Incremental Compilation and Annotation Processing
Gradle supports incremental compilation and annotation processing, which can significantly reduce build times by recompiling only the modified source files.
Example
Enable incremental annotation processing in your build.gradle file:
tasks.withType(JavaCompile) {
options.incremental = true
}
7. Optimize Dependency Resolution
Reducing the number of repositories and ensuring that dependencies are resolved efficiently can improve build times.
Example
Use a single repository block and avoid redundant repositories:
repositories {
mavenCentral()
}
8. Avoid Using Dynamic Versions
Dynamic dependency versions (e.g., latest.release) can cause Gradle to check for updates on every build, slowing down the process.
Example
Specify exact versions in your build.gradle file:
dependencies {
implementation 'com.google.guava:guava:32.0.1-jre'
}
9. Use Dependency Constraints
Dependency constraints can help manage transitive dependencies and ensure consistent versions, reducing resolution time.
Example
Use dependency constraints in your build.gradle file:
dependencies {
constraints {
implementation 'com.google.guava:guava:32.0.1-jre'
}
}
10. Profile Your Build
Gradle provides a built-in profiler to analyze build performance and identify bottlenecks.
Example
Run the following command to generate a build scan:
./gradlew build --scan
Analyze the scan report to identify and address performance issues.
Conclusion
Optimizing Gradle builds is essential for maintaining efficient development workflows. By following these tips, you can significantly improve your build performance, saving time and resources. Regularly review and update your build configurations to ensure you are taking full advantage of Gradle’s performance features.
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