Fresco Core - Domain Knowledge

Team Conventions

Language Preference

• New code: Kotlin preferred
• Existing Java files: OK to continue in Java
• Tests: Kotlin with JUnit 5

Commit Messages

[fresco][component] Brief description

Longer explanation if needed.

Differential Revision: D12345678

Testing

Run Unit Tests

buck2 test fbandroid//libraries/fresco/...:

Run Specific Test

buck2 test fbandroid//libraries/fresco/vito/core:core-test

Debugging

Enable Fresco Logging

FLog.setMinimumLoggingLevel(FLog.VERBOSE)

Memory Debugging

// Check for leaks
CloseableReference.setDisableCloseableReferencesForBitmaps(false)

Critical Code Areas

These areas require extra review care:

1. Native memory (memory-types/, nativecode/)
2. Cache eviction (imagepipeline/cache/)
3. Producer chain (imagepipeline/producers/)
4. Animation (animated-*/)

Common Mistakes to Avoid

1. Forgetting to close CloseableReference
2. Blocking on UI thread
3. Not handling null ImageInfo
4. Inconsistent cache keys between prefetch/fetch
5. Missing API level checks for Java 8 APIs