Kotlin Memory Leak Demo

🚧 Coming Soon - This demo is under development

Overview

The Kotlin demo will demonstrate memory leak patterns and prevention techniques in Kotlin applications, covering both JVM and Kotlin-specific scenarios:

Planned Features

Common Kotlin Memory Leak Patterns

• Coroutine Leaks: Coroutines that never complete or cancel
• Flow Leaks: Unclosed or improperly managed flows
• Lambda Captures: Lambdas capturing large contexts
• Android-specific: Activity/Fragment leaks, View references
• Companion Objects: Static references in companion objects
• Extension Functions: Memory held by extension function receivers

Demo Applications

JVM/Spring Boot Demo

• Kotlin Spring Boot application
• Coroutine-based async operations
• WebFlux reactive streams

Android Demo (Future)

• Android app with common leak patterns
• Activity/Fragment lifecycle issues
• View and Context leaks

Technologies

• JVM Framework: Spring Boot with Kotlin Coroutines
• Build Tool: Gradle with Kotlin DSL
• Testing: Kotlin Test, MockK
• Profiling: JProfiler, Kotlin-specific tools

Quick Start (When Available)

cd kotlin/spring-boot-demo
./gradlew bootRun

Kotlin-Specific Considerations

Coroutine Scope Management

// Proper scope management
class UserService {
    private val scope = CoroutineScope(SupervisorJob() + Dispatchers.IO)

    suspend fun processUsers() {
        scope.launch {
            // Coroutine work
        }
    }

    fun cleanup() {
        scope.cancel() // Important!
    }
}

Flow Resource Management

// Proper flow cleanup
fun userFlow(): Flow<User> = flow {
    // emit users
}.onCompletion {
    // cleanup resources
}

Related Resources

• JavaScript Memory Management Guide
• Timer Leak Patterns
• Closure Leak Patterns

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📝 Want to contribute? This demo is part of our roadmap. Check out our contributing guide to help build this demo.