WASM 3.0 with Andreas Rossberg

Описание: Andreas Rossberg unpacks WASM 3.0, covering new capabilities like garbage collection, exception handling, tail calls, and support for 64-bit addressing with multiple memories. The discussion explores deterministic profiles following relaxed sim, WebAssembly’s capability-based security model, and advances in sandboxing and module design. Andreas connects these features to practical use cases in JavaScript engines and applications like Google Sheets, then looks ahead to experimental work on threading, stack switching, and async programming models shaping the next phase of the WebAssembly ecosystem.


Links




Website: https://people.mpi-sws.org/~rossberg (https://people.mpi-sws.org/%7Erossberg)

GitHub: https://github.com/rossberg


Resources




WASM 3.0 Completed: https://webassembly.org/news/2025-09-...


Chapters




00:00 Intro – Andreas Rossberg and the WebAssembly 3.0 Update

01:05 The State of WebAssembly Today

02:15 Why WebAssembly Exists Beyond the Web

03:20 From WebAssembly 2.0 to 3.0 – What’s Actually New

04:30 Garbage Collection: A Game-Changer for Managed Languages

06:00 The Vision of WebAssembly as a Universal Compilation Target

07:40 How GC Support Unlocks Java, Kotlin, and Dart on WASM

09:10 Expanding to 64-bit Memory – Performance and Limits

10:40 WebAssembly for Databases, AI, and LLMs

12:00 Sandboxing and Security by Design

13:10 How Capabilities and Static Analysis Keep WASM Safe

14:30 Multi-Memory Support and Real-World Use Cases

16:00 Developer Ergonomics vs. Specification Purity

17:20 Tail Calls and Functional Programming Benefits

18:40 Function Tables and Secure Indirection

20:00 Exception Handling Finally Arrives

21:10 Determinism, Efficiency, and Why It Matters for Blockchain

22:30 SIMD and Hardware Divergence Across Platforms

24:00 Balancing Portability with Performance

25:20 The Design Philosophy Behind WebAssembly

26:30 Why WASM Rejects Language-Specific Features

27:40 Proposal Process: Who Decides What Gets In

29:00 Browser Vendors and Implementation Challenges

30:10 Early Deployments: GC, Tooling, and Adoption Stories

31:30 Threads, Stack Switching, and the Future of Concurrency

33:00 Async/Await and Coroutines on WebAssembly

34:30 What’s Coming Next for WASM Developers

35:40 How to Get Involved – Working Groups and Proposals

37:00 Closing Thoughts and Thanks


We want to hear from you!




How did you find us? Did you see us on Twitter? In a newsletter? Or maybe we were recommended by a friend?




Fill out our listener survey (https://t.co/oKVAEXipxu) ! https://t.co/oKVAEXipxu

Let us know by sending an email to our producer, Elizabeth, at [email protected] (mailto:[email protected]) , or tweet at us at PodRocketPod (  / podrocketpod  ) .


Follow us. Get free stickers.




Follow us on Apple Podcasts, fill out this form (https://podrocket.logrocket.com/get-p...) , and we’ll send you free PodRocket stickers!


What does LogRocket do?




LogRocket provides AI-first session replay and analytics that surfaces the UX and technical issues impacting user experiences. Start understanding where your users are struggling by trying it for free at LogRocket.com. Try LogRocket for free today. (https://logrocket.com/signup/?pdr)