從限制理論看 DevOps

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DevOps: a TOC perspective. 談到 DevOps，許多人都會從 CALMS 角度來談：文化、自動化、精實、量測、分享，或從《鳳凰項目》的「三步工作法」著手。但光從這些角度，會不會推導出一些不符組織現況的優先順序及行動建議？這次演講，我從高德拉特的「限制理論」(Theory of Constraints) 角度，帶領大家縱覽整個 DevOps 環節，可因應組織的特殊性，推導出較適合的 DevOps 方針。不只給你魚，更給你「思維方法」的釣竿。 PS. 在另一個場合的同名演講，加長版錄影： https://youtu.be/C5mZp-SDbXw

Technologie

William Yeh
DevOps Summit 2016 (2016-07-05)
DevOps
DevOps: a TOC Perspective

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Workshop held in Agile Tour Kaohsiung 2018 (2018-12-15). Measurement in Agile Way Article: https://william-yeh.net/post/2018/12/agile-measurement/ 「請問一下，這個Ａ功能，大概要多久才能完成？」這是研發團隊常被問到的問題。而且，不會因為你跑的是敏捷，就自動免疫。那麼，身為經過敏捷思維洗禮的人，該如何做出合宜的應對？我常用的方法是：先確定對方現在要的只是粗略的估計，還是精準的估計。萬一對方要求的是精準的估計呢？在這兩個半小時的體驗活動中，我會用真實案例的改編版本，帶大家體驗 Sprint Planning 及 Backlog Refinement 的核心要素。不管你是 PO、PM、UX、RD、QA，都能從活動中親自體認到，我們到底有沒有必要追求精準的估算？以及，萬一真的有必要，我們又該做什麼樣的準備？

為了精準估算，你必須付出什麼代價？

William Yeh

Presented at Agile Summit 2018 (2018-06-29). Video recording: https://www.tibame.com/CoursePlayer/389/8398 (about 45 minutes). Introduction: 許多人都聽聞敏捷方法的優點，但是要怎麼導入自己的團隊呢？由上到下？還是由下到上？如何克服可能的阻力？如何設定初期的戰果？如何兼顧敏捷理想及商業現實？別人的經驗，能原封不動套用在自己身上嗎？本講座從限制理論 TOC (theory of constraints) 的思考邏輯，尤其是其中的 MTO (make to order) 解決方案取經，對上述疑問提出穩健的敏捷導入建議。 ◉ 聽眾預期收穫從已被證實有效可行的領域取經，理解階段性變革的思考邏輯，降低變革阻力。

從限制理論角度談敏捷導入階段 (Agile transition: a TOC perspective)

William Yeh

Presented at DevOps Taiwan Meetup #8 (2017-10-26). Recording (about 90 minutes): https://www.youtube.com/watch?v=zMeA3CjOi60 Introduction: 台灣第一次舉辦的 DevOpsDays Taipei，涵蓋許多精彩的文化與技術議題。大會中，許多講者不約而同提到「系統思考」的概念，這是什麼？許多講者也提到 microservices 的重要性，但為什麼許多人想導入，卻鍛羽而歸？此演講以系統思考的 causal loop diagram 角度，探討 microservices 常見的導入誤區：意外的敵人 (accidental adversaries) 及捨本逐末 (shifting the burden) ，並根據系統基模角度提出對應的槓桿解。希望你聽了之後，能夠初步掌握系統思考的切入點，也對於 microservices 導入，多了一分把握。提醒：建議先複習一下 Andrew Wu 在【DevOps Taiwan Meetup #4 (2017/02/22) - 這一夜讓我們來聊聊 Microservices】的內容： - https://goo.gl/Drfeiw - https://goo.gl/zXkESo

從系統思考看 DevOps：以 microservices 為例 (DevOps: a system dynamics perspective)

William Yeh

Keynote speech for DevOpsDays Taipei, 2017-09-05. Video: https://youtu.be/KMfLEzkJs4Q 【DevOps to Agile 敏捷轉型經驗】 From DevOps to Agile: Transformation Experience of Gogolook. 大部分組織是從 agile 邁向 DevOps，我們 Gogolook 公司卻是從 DevOps 邁向 agile，甚至 lean startup。這種演進歷程，有獨特的優勢，也有獨特的劣勢。本講座會介紹我們敏捷轉型的背景與動機，面臨的組織文化挑戰，並提出一些敏捷轉型的建議。

DevOps to Agile 敏捷轉型經驗　　(From DevOps to Agile: Transformation Experience of G...

William Yeh

現在，有許多可將軟體搬上雲端的技術選項：Docker、微服務、serverless，不過，在搬家之前，為了降低風險，也為了避免 lock-in，你都應該先整頓既有的軟體架構。本講座說明如何以 12-factor app 思維來重構軟體架構，並且運用到 Docker、微服務、serverless 三種熱門的雲端技術身上。發表於 iThome 主辦之【Cloud Summit 2017】: http://cloudsummit.ithome.com.tw/

軟體雲端化的要素 (Elements of Cloud-Native Apps)

William Yeh

高德拉特博士在《目標》書中說道：「事實上，為了說明瓶頸和非瓶頸之間的關係以及應該如何管理工廠，我擬定了九個原則……」本講座將以一個簡單的遊戲，實際帶你領會這限制理論九大原則，並知道該如何運用在軟體開發及 DevOps 領域。註： 1. 此處釋出的投影片，是去掉遊戲現場內容的精簡版。 2. 文章： http://school.soft-arch.net/blog/313477/toc-bottleneck-principles 3. 後來，此遊戲已擴充為 4 小時的企業內訓版：【敏捷開發與團隊塑造】。

瓶頸處理九大原則 (精簡版)

William Yeh

How to Embrace Docker - A TOC Perspective. 外頭流傳著許許多多 Docker 成功案例，可是，為什麼輪到我們身上，卻困難重重呢？「偉大的高德拉特博士」又來了！這一回，讓我們再度以限制理論的思維方式，剖析 Docker 導入的痛點及障礙，並逐一開出藥方，協助你降低導入 Docker 的阻力。文章： http://school.soft-arch.net/blog/268878/embrace-docker

Docker 導入：障礙與對策

William Yeh

▷ https://william-yeh.net/post/2016/05/devops-a-lean-perspective/ 敏捷運動與 DevOps，有某些共同的淵源，但也有不同的偏重取向。 Agile 陣營的人，常會有個疑問：「聽起來，DevOps 好像只是把 Agile 觸角從 Dev 伸到 Ops 端，只是舊瓶裝新酒？」 Waterfall 陣營的人，也常會有個疑問：「聽起來，DevOps 好像只是 Agile 那一票人搞出來的；我們 Waterfall 陣營是不玩這一套的。」真的是這樣嗎？本次活動會以一些小遊戲、一些小短片，帶領大家從 Lean Thinking 角度，重新審視軟體研發的 value stream。回歸 DevOps 的原點，你將能夠自己給出上述問題的答案。 ▷ 2016-05-03 於 Agile Meetup Taipei 演講實況錄影: https://william-yeh.net/post/2016/05/devops-a-lean-perspective/ 全長整整 2 小時，請享用～～～

有了 Agile，為什麼還要有 DevOps？

William Yeh

A talk given to Container Summit 2015, Taipei on 2015-12-10. 【Docker 對傳統 DevOps 工具鏈的衝擊】 Docker 爆紅，以及隨之而來的生態圈，衝擊傳統 DevOps 工具鏈，任何人都無法忽視 Docker 帶來的威脅或機會。已經上手、或正在評估 DevOps 工具的我們，該如何看待這個新局面？對哪些舊方法該持保留態度？對哪些新方法該積極學習？本講座會鳥瞰檯面上的 DevOps 工具，提出新舊交替世代的建議方針。

Docker 對傳統 DevOps 工具鏈的衝擊 (Docker's Impact on traditional DevOps toolchain)

William Yeh

A talk given to JCConf 2015 on 2015/12/05. 在程式設計領域，“immutable objects” 是相當重要的設計模式。同樣的，在虛擬化及雲端時代，“immutable infrastructure” 也成為新一代的顯學。在資源及流程的充分配合下，這將會大大簡化系統的複雜度，穩定性也會大大提升。本演講將會從觀念出發，並佐以部份實作建議，讓大家有足夠資訊來評估此架構的好處。 Video: https://youtu.be/9j008nd6-A4

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In this session, we will delve into strategic approaches for optimizing knowledge management within Microsoft 365, amidst the evolving landscape of Copilot. From leveraging automatic metadata classification and permission governance with SharePoint Premium, to unlocking Viva Engage for the cultivation of knowledge and communities, you will gain actionable insights to bolster your organization's knowledge-sharing initiatives. In this session, we will also explore how to facilitate solutions to enable your employees to find answers and expertise within Microsoft 365. You will leave equipped with practical techniques and a deeper understanding of how there is more to effective knowledge management than just enabling Copilot, but building actual solutions to prepare the knowledge that Copilot and your employees can use.

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Following the popularity of "Cloud Revolution: Exploring the New Wave of Serverless Spatial Data," we're thrilled to announce this much-anticipated encore webinar. In this sequel, we'll dive deeper into the Cloud-Native realm by uncovering practical applications and FME support for these new formats, including COGs, COPC, FlatGeoBuf, GeoParquet, STAC, and ZARR. Building on the foundation laid by industry leaders Michelle Roby of Radiant Earth and Chris Holmes of Planet in the first webinar, this second part offers an in-depth look at the real-world application and behind-the-scenes dynamics of these cutting-edge formats. We will spotlight specific use-cases and workflows, showcasing their efficiency and relevance in practical scenarios. Discover the vast possibilities each format holds, highlighted through detailed discussions and demonstrations. Our expert speakers will dissect the key aspects and provide critical takeaways for effective use, ensuring attendees leave with a thorough understanding of how to apply these formats in their own projects. Elevate your understanding of how FME supports these cutting-edge technologies, enhancing your ability to manage, share, and analyze spatial data. Whether you're building on knowledge from our initial session or are new to the serverless spatial data landscape, this webinar is your gateway to mastering cloud-native formats in your workflows.

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