Javacodegeeks iconJavacodegeeksSep 17, 2026

Pony’s Reference Capabilities: Data-Race-Free Actors Without Locks or GC Pauses

A type system that lets actors share mutable memory by pointer, not by copy, and still guarantees no two of them can ever race. Most actor systems solve concurrent memory sharing one of two ways: copy everything between actors, the way Erlang does, or trust the programmer to lock correctly, the way most actor frameworks …

Pony’s Reference Capabilities: Data-Race-Free Actors Without Locks or GC Pauses

Share this story

Send the public story page.

Useful takeaways from this story.

Most actor systems solve concurrent memory sharing one of two ways: copy everything between actors, the way Erlang does, or trust the programmer to lock correctly, the way most actor frameworks …

Building the complete brief

The page is ready to read now. The fuller skim-friendly version will appear here automatically.

The useful part

A type system that lets actors share mutable memory by pointer, not by copy, and still guarantees no two of them can ever race. Most actor systems solve concurrent memory sharing one of two ways: copy everything between actors, the way Erlang does, or trust the programmer to lock correctly, the way most actor frameworks …

Keep reading in the app

Open the app view to save this story, compare related coverage, and continue from the same source.

Open in app