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Google’s high-performance open source JavaScript and WebAssembly engine. Our mission: enable developers to build a faster future web.

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    V8‏Verified account @v8js 8 Apr 2019
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    🔥 (Byte)code caching reduces the start-up time of commonly visited websites by caching the result of JavaScript parsing + compilation. How can JavaScript developers get the most out of @v8js code caching in @ChromiumDev? @leszekswirski explains: https://v8.dev/blog/code-caching-for-devs …pic.twitter.com/vYVIPR6XmF

    7:45 AM - 8 Apr 2019
    • 172 Retweets
    • 430 Likes
    • Claudiu Hojda Nathan Bower Raúl Fraile Jorge Luis 📈 Rafał Pocztarski Orlando Paredes Hamsho razh Phusit Prakit Obie
    7 replies 172 retweets 430 likes
      1. New conversation
      2. Stefan Penner‏ @stefanpenner 8 Apr 2019
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        Replying to @v8js @ChromiumDev @leszekswirski

        I would love to see this in node.js, especially with the addition of WorkerThreads. Currently, startup time of clis can be really impacted.

        1 reply 0 retweets 3 likes
      3. Stefan Penner‏ @stefanpenner 8 Apr 2019
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        Replying to @stefanpenner @v8js and

        Using WorkerThreads with Babel or typescript or w/e, means you get to spent quite a bit of time loading those libraries rather then computing

        1 reply 0 retweets 1 like
      4. 8 more replies
      1. IcanDivideBy0‏ @IcanDivideBy0 8 Apr 2019
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        Replying to @v8js @ChromiumDev @leszekswirski

        That's definitely something I can do!pic.twitter.com/5Kv5F3xUUn

        0 replies 0 retweets 1 like
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      2. Madhu  🕸️ developer‏ @maddydeep28 9 Apr 2019
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        Replying to @v8js @ChromiumDev @leszekswirski

        I hope it uses the fresh file instead of cache when there is a change.

        1 reply 0 retweets 0 likes
      3. Leszek Swirski‏ @leszekswirski 9 Apr 2019
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        Replying to @maddydeep28 @v8js @ChromiumDev

        When there is a change (i.e. a new response is received and it's not a HTTP 304) then it's put in the response cache and the old code cache is wiped.

        0 replies 0 retweets 1 like
      4. End of conversation
      1. New conversation
      2. Steven Roussey‏ @sroussey 9 Apr 2019
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        Replying to @v8js @leszekswirski @ChromiumDev

        Does @ElectronJS activate the service worker type whole file cache? It’s close to a PWA after all. Or should every app add service worker? And what about Extensions? Firefox would do some for extensions (at least it did a decade ago, but things have changed a lot since then).

        1 reply 0 retweets 0 likes
      3. Leszek Swirski‏ @leszekswirski 9 Apr 2019
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        Replying to @sroussey @v8js and

        Code caching in extensions is sadly a long standing backlog item, it makes sense to do it but no one has done it yet. I'm not sure about @electronjs, I've not heard about them changing how it works but I've also not heard about them *not* changing it.

        0 replies 0 retweets 1 like
      4. End of conversation
      1. New conversation
      2. Puneet Priyadarshi‏ @this__puneet 11 Jul 2019
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        Replying to @v8js @ChromiumDev @leszekswirski

        Is there a plan or possibility to add support for build-time precompilation of JavaScript into bytecode?. Something similar to what @HermesEngine announced todayhttps://hermesengine.dev/ 

        1 reply 0 retweets 0 likes
      3. Leszek Swirski‏ @leszekswirski 8 Sep 2019
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        Replying to @this__puneet @v8js and

        Late reply, sorry. No for a bunch of reasons, fundamentally because shipping bytecode would need a bytecode web standard, which is v. restrictive (e.g. no bytecode optimisations). Hermes on React Native controls the vertical stack, so it has different tradeoffs.

        1 reply 0 retweets 0 likes
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      2. Darin Hensley‏ @darin_hensley 10 Apr 2019
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        Replying to @v8js @ChromiumDev @leszekswirski

        "multiple smaller scripts tends to be more beneficial overall for reasons other than code caching (e.g. multiple network requests..." I thought multiple network requests were bad for static resources? ie vulcanize?

        1 reply 0 retweets 0 likes
      3. Mathias Bynens‏Verified account @mathias 10 Apr 2019
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        Replying to @darin_hensley @v8js and

        With HTTP/2, multiple requests can be made in parallel without incurring additional TCP connections. See https://developers.google.com/web/fundamentals/performance/http2/#request_and_response_multiplexing ….

        2 replies 0 retweets 1 like
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