ngRepeat vs ngReact
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NgRepeat and ngReact are Angular directives for displaying lists of data. NgRepeat uses Angular templates and two-way binding, while ngReact uses React components for a virtual DOM. The document provides demos of each approach and notes that the chat system uses WebSockets, Redis for data storage, and auto-scaling servers for load balancing. It also mentions that Hitbox is hiring.
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Google Sheet: https://docs.google.com/spreadsheets/d/1uXA07zxrUx2FCnBZWH80PpBZQrrX-2q1UBBe_0k3Yeo
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Google Document: https://docs.google.com/document/d/1BU4ZHW_41XJm2lvTq9pWYUpZILAEmF9dWEw7-DBbWoE
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Google 際際滷s: https://docs.google.com/presentation/d/1uF8q6ueJWcAnhKTQsZxLE0Bo9PwgRNwCeuGV_ZgbSyU
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*Introduction to Natural Language Processing - Stages in NLP Pipeline, Challen...
Introduction to Natural Language Processing - Stages in NLP Pipeline, Challen...resming1
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Lecture delivered in 2021. This gives an introduction to Natural Language Processing. It describes the use cases of NLP in daily life. It discusses the stages in NLP Pipeline. It highlights the challenges involved covering the different levels of ambiguity that could arise. It also gives a brief note on the present scenario with the latest language models, tools and frameworks/libraries for NLP.Ad
ngRepeat vs ngReact
- 5. Martin Fowlers Design Stamina Hypothesis
- 6. WebSocket Load balancing Permission and security model (Admin, Mods, ...) Frontend Server Backend Server UI Chat System Frontend Server NodeJs data storage Redis Cluster hitbox REST-API PHP Nginx Backend Server NodeJs Auto scaling Auto scaling Long Polling Fallback Fallback Server NodeJs
- 7. ngRepeat
- 11. Demo
- 12. ngReact
- 17. Demo
Editor's Notes
- #2: What i want to talk about
- #3: What is hitbox? A streaming service f端r gamer
- #4: This is the startpage
- #5: And this is a watchpage. On eintegrap part of it is the schat on the right, where poeple communicate with the broadcaster
- #6: -start with lean 油-> with just as much effort,as required 油and when the idea is proved, restructure and make it more maintainable -the hitbox application were made in lean, so we have legacy code -but the idea has proved, and now we are stabilizing 油the application/making it better -first thing was the chat
- #7: This is how the chat is build
- #8: What i want to talk about
- #9: -fun part -> message bodies (HTML) were generated as string properties of js objects, which is bad practice, but we didnt change this, because we could reuse the exact same message body with react like before, this allowed us to change to ngReact fast, without too much effort, but if you start from scratch, dont do this
- #10: we had to use $scope.$apply on each message, so if we had 80messages/sec that triggered 80diggest loops/sec. If you do the math, basically you have 16ms for everything to get 60fps on the browser, for the simplicity, let's just say we have 16ms for the digest loops (in reality 16ms is for everything, including all js, render, etc..), if you divide 16/80 that means, you have 0.2ms (200袖s) for the digest loop, and we know, in a complex application, a digest loop below 1ms is rare so
- #11: so
- #12: What i want to talk about
- #13: What i want to talk about
- #14: - we have a separate service for messages, called chatMessages - the react component have a state array which will be used in the template, and the react component subscribes with a callback function(setItems) for new messages in the chatMessages service - a websocket message can push new message into an array in the chatMessages service
- #15: so
- #17: while we push to the array, we limit the length of the messages array to 300 [MAX this is only for you: what we do is we check if the length is above 300, and if it is, we limit the messages array to 150, however we could just limit it to 300, and forget this 150 thing. I don't remember why I implemented like this, but I think we could just let 300 messages to be in the DOM all the time]
- #18: What i want to talk about
- #19: Just one mor think:
- #20: We are hiring!