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Yehuda Katz

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Keynote Part 1EmberConf 20232023-07-20
Polaris brings a concrete migration: Ember 5.0 aligns with modern tooling by landing Ember template imports so templates live in JS files via a template tag…
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Build a Universal Reactive Data Library with StarbeamJSNation 20232023-06-01
StarBeam is a standalone reactive library that can be intermixed with React. It provides reactive versions of JavaScript built-in collections and allows for…
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Starbeam: Universal Reactivity And What It Means For YouPhilly ETE 20232023-04-11
Starbeam is a reactivity library extracted from Ember that builds cells, resources, services and element modifiers as universal reactive primitives and ships…
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Starbeam, and what it means for EmberEmberFest 20222022-09-22
A new reactivity library called Starbeam exists today after about nine months of work, with a working React renderer and a Svelte prototype, and Starbeam 0.7…
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Announcing Starbeam: Universal ReactivityJSNation Conference 20222022-06-16
Announcing Starbeam as a library for universal reactivity and showing a working users table built inside a React app, the demo implements…
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Keynote Part 1EmberConf 20222022-04-19
A roadmap for Ember’s next edition explains concrete wins: template tag moves templates into JS so components, helpers and modifiers use normal imports…
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Fireside Chat with Yehuda Katz and Ed FaulknerEmberConf 20222022-04-19
Explains a concrete reactivity extraction called Starbeam that already runs tests and yields a tiny database‑style library built on its primitives, shows how…
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Keynote Part 1EmberConf 20212021-03-29
Ember adopts a disciplined six-week release channels model with feature flags and tooling (Ember CLI, HTMLBars) to stage big changes without breaking apps; an…
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Opening KeynoteEmberConf 20202020-03-16
Ember ships a concrete plan: Ember Octane lands as a December minor stable release that is HTML-first, adds auto-tracking, template-only components, element…
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Inside Rails...RailsConf 20192019-05-01
Explains exactly how an HTTP request becomes a controller method: DNS → TCP/HTTP → web server → use and run in config.ru → Rack ENV hash → middleware chain →…
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Opening KeynoteEmberConf 20192019-03-18
Ember announces an Octane addition: a coherent snapshot bundling JavaScript classes, Glimmer components, angle-bracket invocation, and a new change system…
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Enabling Web Developers to Build the Future of the WebCascadiaJS 20182018-11-15
A first-person account explains concrete wins: a 230+ response survey that proves developer demand, joining TC39 to add web developers where there were none…
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Using Skylight to Solve Real-World Performance ProblemsRailsConf 20182018-04-17
Skylight shows median and 95th percentile latencies rather than averages and pinpoints slow endpoints by combining slowness with popularity so fixes matter. It…
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Opening KeynoteEmberConf 20182018-03-12
Roadmap announces concrete changes: a conventional pods-style file layout with codemods to migrate apps, making jQuery optional (≈30KB) and reducing default…
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The Feedback Loop: Growing healthy open source projectsKeep Ruby Weird 20172017-10-27
Argues that healthy projects adopt a one-OSS vs two-OSS governance model, favor positive-sum solutions over zero-sum shortcuts, and actively turn frustrated…
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​Introducing Helix: High-Performance Ruby Made EasyRailsConf 20172017-04-25
Helix is an open source toolkit that compiles Rust into native Ruby extensions so Rails apps get C‑like speed without segfault risk; Skylight extracts it from…
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Opening KeynoteEmberConf 20172017-03-28
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Zen and the Art of Package ManagementRubyConf Portugal 20162016-10-27
Built three package managers — Bundler, Cargo, Yarn — and compares concrete behaviors: Cargo enforces semver (it refuses to publish "" ranges), NPM install is…
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Small Details, Big ImpactRailsConf 20162016-05-04
Skylight swaps an unreadable RPM column for a Popularity icon sized to avoid misleading log‑normal distributions, proves the triangle meter works better than…
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Stability Without Stagnation: Lessons Learned Shipping EmberPhilly ETE 20162016-04-11
Ember uses a disciplined pipeline — RFCs, feature flags, Canary → Beta → Release every six-week release cycle with LTS every fourth release — to land breaking…
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Opening KeynoteEmberConf 20162016-03-28
Conference updates list concrete outcomes not fluff: community grows to almost 1,950 attendees, ember CLI logs 52 million live reload events and ember…
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The Future of Ember TemplatingEmberConf 20162016-03-28
Glimmer 2 presents a concrete implementation: a pull‑based reference primitive plus an entity tag validation system and a compact revision tagging encoding…
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Turbo Rails with RustRubyKaigi 20152015-12-11
Shows building a native Rails extension in Rust using a small runtime library and a file format that generates glue; Rust replaces C glue with libcruby plus…
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Rewriting a Ruby C Extension in RustFull Stack Fest 20152015-09-01
Rewriting a Ruby C extension in Rust demonstrates that a straightforward Rust implementation of Sam Saffron’s fast_blank outperforms the hand‑written C…
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Using Rust from C... or Any LanguageRustCamp 20152015-08-01
Rust code compiles into a C-callable library and the claim is that production FFI is doable and safer than C++ after a year of work on Skylight where Ruby…
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Bending the Curve: How Rust Helped Us Write Better RubyRailsConf 20152015-04-21
Skylight rewrites its Ruby agent in Rust and ships a featherweight agent that uses far less CPU and memory while collecting far more fine‑grained timing and…
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What is Rust?Philly ETE 20152015-04-07
Rust claims to eliminate segfaults and most memory leaks by enforcing ownership and borrowing at compile time instead of using a GC, giving no runtime GC yet…
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Opening KeynoteEmberConf 20152015-03-03
Ember reports concrete wins: community grows to ~1,900 attendees, ember CLI records 52 million live‑reload events and 300,000 downloads a month, and ember…
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A guide to Indie Open Source SoftwaredotJS 20142014-11-17
Argues that indie open source succeeds by specific practices: diversify core team membership across companies, insist on 20% time for maintainers who also ship…
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Let’s Talk About RustGoGaRuCo 20142014-09-19
Rust claims C-like control and memory efficiency while proving safety and productivity: the compiler enforces ownership rules and gives a compile-time error if…
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Keynote: 10 Years!RailsConf 20142014-04-22
Rails claims that convention over configuration succeeds because human decision-making hits ego depletion, so defaults become the most effective psychological…
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How to Build a Smart Profiler for RailsRailsConf 20142014-04-22
Skylight claims to deliver honest response times by storing histograms and 95th percentile rollups, and it actually handles the scale of real traffic — the…
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Lightning TalksRailsConf 20142014-04-22
A rapid-fire sequence of demos and claims: micro‑events announce a Ruby hackfest; benchmarks compare JSON, MessagePack and Protocol Buffers across Ruby, Python…
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Keynote With Yehuda Katz and Tom DaleFluent 20142014-03-11
Argues that a framework should encode community best practices rather than just offer maximally flexible primitives, comparing Ember and Angular: Angular…
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Yehuda Katz and Tom Dale (Tilde Inc.) interviewed at Fluent 2014Fluent 20142014-03-11
Argues framework wars are overstated and shows why Ember trades flexibility for productivity by baking conventions into a larger codebase: Ember bakes in…
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KeynoteEmberConf 20142014-03-02
Claim: Ember makes developers dramatically more productive on multi‑screen web apps. Evidence: six-week release cycle backed by automation, Ember 1.0 shipped…
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Monitoring the Health of Your AppRailsConf 20132013-04-29
Argument: averages lie — web response times are long‑tailed so 95th percentile and histograms matter. Implementation: an MVP service (Skylight) instruments…
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Building Web Applications with Ember.jsHTML5DevConf 20132013-04-01
Ember.js organizes app state into long‑lived models, session controllers and view templates, demonstrates URLs-first routing with nested outlets and automatic…
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Tokaido: Making Ruby Better on OS XRubyConf 20122012-11-01
Tokaido produces a relocatable, portable Ruby by statically linked Ruby 1.9.3 that embeds libssl libcrypto and libz so OS X no longer breaks on external…
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Cruft and Technical Debt: A Long ViewGoGaRuCo 20122012-09-14
Claim: cruft inevitably accumulates because external assumptions change faster than code, producing technical obsolescence distinct from intentional debt…
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What's jQuery Doing on Standards?jQuery Conference 2012 San Francisco2012-06-28
jQuery Foundation joins W3C/ECMA, pushes concrete fixes: replaces jQuery’s synthetic-id query hacks by driving a proposed findAll/querySelectorAll scoping bug…
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Lightning Talks - Part IIRailsConf 20122012-04-23
Lightning round of concrete takeaways: draw your engine routes on the engine itself and use isolate_namespace so engine and app routes coexist; aim for…
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Rails: The Next Five YearsRailsConf 20122012-04-23
Rails needs conventions for JSON APIs: Active Model Serializers is presented as a concrete solution that generates serializers with rails generators, hooks…
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Ruby: The Challenges AheadMountainWest RubyConf 20112011-03-17
Argues Ruby must stop shipping only 80/20 hacks and finish the last 20 percent: real concurrency, library completeness, and language evolution. Points out SSL…
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Extending Rails 3GoGaRuCo 20102010-09-17
Rails 3.1 makes concrete changes: engine migrations get a copy-and-timestamp workflow so gems ship migrations safely; the static middleware uses a…
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Writing Modular Ruby Code: Lessons Learned from Rails 3MountainWest RubyConf 20102010-03-11
Argues against premature modularity and shows concrete Rails 3 changes: moves routing off globals so multiple routers and rackapps URL helpers work, converts…
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Polishing RubygemsRubyConf 20092009-11-19
After months building a wrapper around RubyGems the result is bundler which performs atomic dependency resolution, treats a repo or directory as a git-as-gem…
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From Rails to Rack: Making Rails 3 a Better Ruby CitizenGoRuCo 20092009-05-30
Explains concrete changes in Rails 3: adopts Rack so middleware like Rack middleware and router points at an action become first-class, lets…
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Rails Core PanelRailsConf 20092009-05-04
Panel answers focus on concrete changes and asks: progress on mountable reusable apps, a pluggable JSON backends mechanism to avoid json gem clashes, and a…
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The Great Rails RefactorMountainWest RubyConf 20092009-03-13
Explains the Rails/Merb merge roadmap and concrete engineering work: Rails 3 adopts action_orm proxies for true ORM agnosticism (two integration options for…
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Using Jquery with Ruby Web FrameworksLone Star Ruby Conference 20082008-09-04
Writes an edit‑in‑place jQuery plugin test‑first using ScrewUnit and a Merb test plugin, implements behaviors until specs pass: click swaps a P for an input…
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Merb the Pocket Rocket FrameworkLone Star Ruby Conference 20082008-09-04
Merb claims real speed — typical request paths hit ~500µs and some actions render <1 ms actions enabling apps at tens of millions of hits/day. It enforces a…
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Lightning Talk: What Can We Learn from the Edge Projects?Ruby Hoedown 20082008-08-08
Argues Ruby is viable for enterprise workloads with concrete fixes not slogans: rewrote C database drivers in a week to remove objections, measures a Merb…
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Faster, Better ORM with DataMapperMountainWest RubyConf 20082008-03-28
DataMapper claims faster, more flexible ORM by using an identity map so repeated lookups reuse Ruby objects, and strategic eager loading that cuts typical N+1…
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