Feature Toggle: Make Development more Efficient

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Feature Toggle

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黃信豪, Sean Huang Sr. Technical Manager@LINE 2010-2014: Quanta Research 2014-2016: start up 2016-2018: Gogoro Inc. 2018-2020: LINE 2021: Appier 2021 – now: LINE

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Closing the distance & Life on LINE 在LINE做過什麼 2018.11 LINE旅遊 2018.04 2018.09 2018.10 全家付款買貼圖 MRT 公車追蹤台灣大車隊 beacon合作 2022.10 金物流模組 LINE購物商城 2023.6 金流模組內容服務 2023.08 金流模組 LINE禮物 2018 2023

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Software 天下武功唯快不破

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Software 贏者全拿 Winner Take All

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專案管理鐵三⾓範疇

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01 02 03 04 介紹什麼是 Feature Toggle，及基本概念和工作原理。分享實際應用場景，包括 AB testing, Canary Release 等。 LINE 台灣在推動 Feature Toggle 的經驗和協同開發工法 Feature Toggle 應⽤場景 LINE台灣在推動的⼯法影響到開發流程和 CI/CD 在 k8s 上的部署，如何解決痛點對K8s 的影響 Feature Toggle 簡介 05 如何持續改善縮短部署週期與增進開發效率 CONTENT

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01 Feature Toggle 簡介

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Code with Flag 最簡單的feature toggle

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Configuration feature toggle進化 I

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Database feature toggle進化 II

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Feature Toggle System feature toggle進化 III

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Feature Toggle System feature toggle進化 III

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How to Evaluate Toggle System

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WHY OpenFlagr?

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OpenFlagr Architecure

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註解或⼩標題⽂字註解或⼩標題⽂字 02 Feature Toggle 應⽤場景

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Use Case for E-Commerce

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Canary Release

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Dynamic Configuration

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註解或⼩標題⽂字註解或⼩標題⽂字 03 LINE台灣在推動的⼯法

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K8s deployment

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Authentication Internal Auth Proxy Openflagr Manager

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Authentication

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Feature Flag Client OpenFeature OpenFeature SDK OpenFeature Provider Feature Toggle System Flag Evaluation API

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Mockoon - MockAPI API Request HTTP Client Interceptor Third Party API Mock API Feature Toggle System

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註解或⼩標題⽂字註解或⼩標題⽂字 04 對K8s部署流程影響

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K8s release 架構圖

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Release Pipeline

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註解或⼩標題⽂字註解或⼩標題⽂字 05 縮短部署週期與增進開發效率

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CFR Change Failure Rate LINE台灣的開發效能指標 MTTR Mean Time to Restore Service LTC Lead Time for Changes DF Deployment Frequency