Signals are not a new technology. The current wave of Signals and fine-grained rendering has existed in the modern form for the past 7 years. As an early adopter/pioneer in this area I want to talk about where things are and how I see them changing in the next few years. We will take a first look at Solid's work in this area and talk about the tradeoffs and constraints.

[0:00] Intro
[2:55] Ryan Joins Stream
[09:09] Ryan Answers Questions From Chat 1
[26:18] What is signals 2.0?
[1:10:18]  Ryan Answers Questions From Chat 2
[1:21:31] Ownership Model In Solid
[1:26:18] Is IT Common To Nest Effects ?
[1:28:19] Discussion With Chat 
[1:30:26] Three Types Of Rendering Frameworks
[1:34:55] Solid Beyond HTML Elements
[1:38:37] How Solid's Context Works !
[1:41:09] Discussion Chat Continues 
[1:47:19] Example Of Losing Reactivity
[1:48:16] Error Boundaries
[1:52:52] What Is A Control Boundary?
[1:56:30] Performance Of Proxies
[2:01:30] What Really Is Signals 2.0?
[2:05:35] createResource
[2:21:54] Dependency tracking
[2:33:12] createAsync
[2:35:43] createRenderEffect
[2:43:56] Synchronisation vs Derivation
[2:47:58] createWritable
[3:24:04] This Week In JavaScript
[3:28:15] TWIJS: "You Can't Make Children Typesafe In React And Typesafe"
[3:33:16] TWIJS: Default HTTP Method Of form
[3:38:04] TWIJS: "SSR For Docs Site Is A mistake ?"
[3:40:17] TWIJS: Solid News
[3:41:45] TWIJS React Complier's Type System
[3:47:29] The World Beyond Components (Clip)
[3:54:30] Crossing The Chasm
[4:03:03] Angular And Wiz Are Merging!
[4:37:29] Appreciation To All Contributors
[4:58:45] Conclusion

Thanks to @boomshakalaka656 for the timestamps!

Image by pvproductions on Freepik

Ryan Carniato

Ryan Carniato (creator of SolidJS) discusses the design direction for Signals 2.0 in a live stream. He covers the evolution of reactive systems, contrasting push-based, pull-based, and push-pull hybrid approaches using live code demos. Key topics include eager vs. lazy evaluation trade-offs, batching and scheduling considerations, consistency across frameworks (React, Vue, Svelte, Solid), and why most modern signal implementations are lazy while Solid 1.x remains eager. He also touches on the tc39 signals proposal, the challenges of standardizing effects, and why Solid 2.0 will shift toward a lazier push-pull model similar to Preact Signals and Vue.

Designing Signals 2.0