2023-05-23 20:51:40 +02:00
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<!doctype html>
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2022-08-12 08:19:15 +02:00
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<html lang="en">
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2023-05-23 20:51:40 +02:00
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
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2023-05-26 00:02:09 +02:00
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<title>Why Can't We Deploy This Today?</title>
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2023-05-23 20:51:40 +02:00
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2023-05-26 00:02:09 +02:00
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2023-05-23 20:51:40 +02:00
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</head>
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<body>
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<div class="reveal">
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<div class="slides">
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2023-05-29 09:48:14 +02:00
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<section id="cover-page">
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<h1>Why can't we deploy this today?</h1>
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2023-05-26 10:34:33 +02:00
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<aside class="notes">
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Good morning everyone, today I would like to tell you some things
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about my journey with Software delivery processes, and how the question
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'Why can't we deploy this today' has helped us at Jet-Stream to make
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interesting improvements to our software delivery.
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</aside>
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2023-05-25 06:29:16 +02:00
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</section>
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2023-05-26 10:34:33 +02:00
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<section data-markdown id="about-me">
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2023-05-25 06:29:16 +02:00
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# About me
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* Dirk Nederveen, [@dirk@blog.ndrvn.nl](https://blog.ndrvn.nl/u/dirk)
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2023-05-29 09:48:14 +02:00
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* Husband, father of 3
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* Streaming Engineer (QA) @Jet-Stream
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2023-05-25 06:29:16 +02:00
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* Interests:
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- Theology
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- Neurospychology
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- Reading
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- Beer brewing
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2023-05-23 20:51:40 +02:00
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</section>
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<section>
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2023-05-26 00:02:09 +02:00
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<section id="story-bug">
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<h1>The story of a bug</h1>
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<p>Starring</p>
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<p>
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🦹🏻♂️<br>
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🦸🏼♂️<br>
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🧑💼<br>
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👩🏾💻 👷🏻♂️<br>
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👩🏼🚒
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</p>
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<aside class="notes">
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2023-05-26 10:29:31 +02:00
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<p>Today we'll follow a bug through the processes of development team</p>
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🦹🏻♂️ Customer<br>
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🦸🏼♂️ Support Hero<br>
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🧑💼 Company/Product Owner<br>
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Dev team: 👩🏾💻 Sr. Dev and 👷🏻♂️ Jr. Dev<br>
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Ops team: 👩🏼🚒 System Operator<br>
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</aside>
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</section>
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2023-05-25 06:29:16 +02:00
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2023-05-26 00:02:09 +02:00
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<section>
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<h1>The story of a bug</h1>
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<p>
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1 May: 🦹🏻♂️ →📞→ 🦸🏼♂️<br>
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4 May: 🧑💼 👩🏾💻 🦸🏼♂️ → 🐛<br>
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5 May: 🧑💼 👩🏾💻<br>
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8 May: 🧑💼 🦸🏼♂️ 👩🏾💻 👷🏻♂️<br>
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</p>
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<aside class="notes">
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🦹🏻♂️ Customer calls with a question about sending an invoice on Mon 1 May, 🦸🏼♂️ Support Hero logs ticket BS-1234 in Jira<br>
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🧑💼 Product Owner, 👩🏾💻 Sr. Dev and 🦸🏼♂️ Support Hero have triage meeting on Thu 4 May, bug confirmed, priority 'Highest'<br>
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🧑💼 Product Owner and 👩🏾💻 Sr. Dev have backlog grooming meeting on Friday 5 May <br>
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🧑💼 🦸🏼♂️ 👩🏾💻 👷🏻♂️ Team has Sprint Planning meeting on Mon 8 May, commit to BS-1234 for 1 Story Point <br>
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</aside>
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2023-05-25 06:29:16 +02:00
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</section>
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<section data-markdown>
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2023-05-25 06:29:16 +02:00
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# Closed sprint
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- Two weeks is fast in context of 6 month CD-ROM releases!
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- How long does shipping take for your application?
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---
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2023-05-23 20:51:40 +02:00
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# Closed sprint
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2023-05-26 00:02:09 +02:00
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- 👍 Shared control over workload
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- 👍 Predictible cadence
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- 👎 Limits response time to `sprint_length`
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</section>
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2023-05-25 06:29:16 +02:00
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</section>
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<section id="pull-requests">
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2023-05-26 00:02:09 +02:00
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<section>
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<h1>The story of a bug</h1>
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<p>
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10 May: 👷🏻♂️, 🤷♂️; 👷🏻♂️ →📧→ 🦹🏻♂️<br>
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11 May, 4 PM: 🦹🏻♂️ →📧→ 👷🏻♂️<br>
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15 May: 👷🏻♂️ →<i class="lni lni-github-original"></i>→ 👩🏾💻<br>
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16 May, 4 PM: 👩🏾💻 →<i class="lni lni-github-original"></i>→ 👷🏻♂️<br>
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</p>
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<aside class="notes">
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👷🏻♂️ Jr. Dev picks up BS-1234, needs clarification and sends 🦹🏻♂️ Customer an email on Wednesday 10 May<br>
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🦹🏻♂️ Customer responds Thursday 11 May, 16:00<br>
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👷🏻♂️ Jr. Dev starts implementation on Monday 15 May, opens PR #2345 in GitHub<br>
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👩🏾💻 Sr. Dev responds to PR #2345 on Tuesday 16 May 16:00, needs improvement<br>
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</aside>
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</section>
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<section data-markdown="">
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2023-05-25 06:29:16 +02:00
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# Pull Requests
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2023-05-29 09:48:14 +02:00
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- Untrusted contributer, trusted maintainer
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- Communication through centralised repository
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---
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# Pull Requests
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- 👍 Multiple people look at the code
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- 👎 Time between action and response
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- 👎 Focus on code level, not product level
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- 👎 Value spends a lot of time waiting
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</section>
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2023-05-25 06:29:16 +02:00
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</section>
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<section id="handoffs">
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2023-05-26 00:02:09 +02:00
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<section>
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<h1>The story of a bug</h1>
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<p>
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17 May: 👷🏻♂️ →<i class="lni lni-github-original"></i>→ 👩🏾💻<br>
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17 May, 3 PM: 👩🏾💻 →<i class="lni lni-slack"></i>→ 👷🏻♂️<br>
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18 May: 👷🏻♂️ → 🕺⛺️🍻<br>
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</p>
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<aside class="notes">
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👷🏻♂️ Jr. Dev processes feedback on Wed 17 May, 10:00<br>
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Oh no! 💥 Merge conflict!<br>
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👩🏾💻 Sr. Dev checks PR #2345 and Slacks 👷🏻♂️ Jr. Dev on Wed 17 May, 15:00<br>
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It's the Ascension Day weekend! 👷🏻♂️ Jr. Dev is off to a festival 🕺<br>
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</aside>
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</section>
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<section>
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<h1>The story of a bug</h1>
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<p>
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22 May: 🧑💼 🦸🏼♂️ 👩🏾💻 👷🏻♂️<br>
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30 May: 👷🏻♂️ →<i class="lni lni-github-original"></i>→ 👩🏾💻<br>
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30 May: 👩🏾💻 →✅→ 👷🏻♂️<br>
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2 June: 👩🏾💻 👷🏻♂️ →📦→ 👩🏼🚒<br>
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</p>
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<aside class="notes">
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Mon 22 May: another Sprint Planning meeting. The team commits to BS-1234 again (0 Story points now, "it's basically done")<br>
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Tue 30 May: 👷🏻♂️ Jr. Dev picks up BS-1234 again, fixes the merge conflict<br>
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Tue 30 May: 👩🏾💻 Sr. Dev approves PR #2345 and 👷🏻♂️ Jr. Dev gets to click the ⛙ Merge button!<br>
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Friday 2 June: Sprint end! 👩🏾💻 👷🏻♂️ Dev team sends the release candidate to 🙅 👩🏼🚒 Ops team<br>
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</aside>
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</section>
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<section data-markdown="">
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2023-05-25 06:29:16 +02:00
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# Handoffs
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2023-05-26 00:02:09 +02:00
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- Teams with distinct responsibilities
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- Changes move in discrete steps
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---
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# Handoffs
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- 👍 Specialisation
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- 👍 Clear responsibilities
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- 👎 Pipeline speed
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- 👎 Adversarial relationships
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</section>
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</section>
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2023-05-26 00:02:09 +02:00
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<section id="time-to-value">
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<section>
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<h1>The story of a bug</h1>
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<p>
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6 June, 7 AM: 👩🏼🚒 →📦→ ☁️<br>
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6 June, 9 AM: 🧑💼 →📧📧📧→ 🦹🏻♂️🦹🏻♂️🦹🏻♂️
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</p>
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<aside class="notes">
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👩🏼🚒 System Operator prepares release after Sprint end, and deploys update on Tue, 6 June 07:00<br>
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🧑💼 Product Owner sends the update newsletter Tue at 09:00<br>
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</aside>
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</section>
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<section data-markdown="">
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# Time to value
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- The bug is fixed, 🦹🏻♂️ Customer can send their invoices again!
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- Took 5 weeks <!-- .element: class="fragment" -->
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</section>
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</section>
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<section>
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<section data-markdown="">
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# Value stream mapping
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- How the *value* flows through an organisation
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- *Who* holds responsibility
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- Time to value
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</section>
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<aside class="notes" data-markdown="">
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- We engaged in an exercise of (informal) value stream mapping
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- Actually helps with providing estimates
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</aside>
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</section>
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<section>
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<h1>We have processes for a reason</h1>
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<ul>
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<li>Quality assurance</li>
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<li>Pace</li>
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<li>Delivering software reliably</li>
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<li class="fragment">Make the suits happy</li>
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</ul>
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<aside class="notes">
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In the end, all processes are born to get the chaos of life under control
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</aside>
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</section>
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<section id="pom-pom-pom">
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<section>
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<h1>The story of a bug</h1>
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<p>
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6 June<br>
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🦹🏻♂️🤬 →📞→ 🧑💼<br>
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🧑💼😱 🦸🏼♂️ 👩🏾💻 👷🏻♂️<br>
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👩🏾💻 →🩹→ 👩🏼🚒<br>
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👩🏼🚒 →🩹→ ☁️<br>
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</p>
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<aside class="notes">
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🦹🏻♂️ Customer calls angrily: the bug is not fixed!<br>
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🧑💼 Product Owner calls an urgent meeting: Why is BS-1234 (zero points!!) open for over a month?<br>
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👩🏾💻 Sr. Dev drafts a patch release<br>
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👩🏼🚒 System Operator deploys the patch<br>
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</aside>
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</section>
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<section data-markdown="">
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# What just happened?
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- High stress: angry phone calls
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- Value discovery, implementation, delivery
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2023-05-23 20:51:40 +02:00
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</section>
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</section>
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2023-05-26 00:02:09 +02:00
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<section>
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<section id="continuous-delivery">
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<h1>Continuous delivery</h1>
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<div style="width: 80%; float: left" data-markdown="">
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* Build quality in
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* Work in small batches
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* Computers perform repetitive tasks, people solve problems
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* Relentlessly pursue continuous improvement
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* Everyone is responsible
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</div>
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<div style="float: right; width: 20%; height: 8em">
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<a href="https://www.bol.com/nl/nl/p/accelerate/9200000080652224">
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<img src="accelerate.jpg" style="height: 50%;">
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</a><br>
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<a href="https://www.informit.com/store/continuous-delivery-reliable-software-releases-through-9780321770424?ranMID=24808">
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<img src="cd-book.png" style="height: 50%;">
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</a>
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</div>
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</section>
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2023-05-26 00:04:57 +02:00
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<section id="deployment-pipeline">
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2023-05-26 10:29:31 +02:00
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<h2>Deployment pipeline</h2>
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2023-05-26 00:04:57 +02:00
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2023-05-29 09:48:14 +02:00
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<img src="cd-pipeline.png" href="https://opensource.com/article/20/5/cicd-best-practices">
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<aside class="notes">
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Image by <a href="https://opensource.com/users/heronthecli">Taz Brown</a>, <a href="https://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA 4.0</a>
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</aside>
|
2023-05-26 10:29:31 +02:00
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</section>
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<section>
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<h2>Deployment pipeline</h2>
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<p data-markdown="">
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- Releasable: `True` or `False`
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- Quick feedback
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- Release → Domain knowledge → Pipeline improvements → Better release → …
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</p>
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</section>
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<section id="deployment-pipeline">
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<h2>Deployment pipeline</h2>
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<img src="cd-pipeline.png">
|
2023-05-26 00:04:57 +02:00
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</section>
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|
2023-05-26 00:02:09 +02:00
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|
<section id="build-quality-in" data-markdown="">
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## Build quality in
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- Test Driven Development
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- Pair programming
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- Infrastructure as code
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</section>
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<section id="work-in-small-batches" data-markdown="">
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## Work in small batches
|
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- Continuous integration/Trunk based development
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- Feature flags
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|
- More frequent releases
|
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</section>
|
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|
<section id="people-solve-problems" data-markdown="">
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|
## Computers perform repetitive tasks, people solve problems
|
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|
- Continuous deployment
|
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|
- Tacit knowledge → Text runbook → Script → Deployment pipeline
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|
</section>
|
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|
<section id="relentlessly-pursue-improvement" data-markdown="">
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|
## Relentlessly pursue improvement
|
2023-05-23 20:51:40 +02:00
|
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|
2023-05-26 00:02:09 +02:00
|
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|
- Do one step at a time
|
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|
- Find out (measure!) what works
|
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|
|
- "Make the change easy, then make the easy change"
|
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|
|
</section>
|
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|
|
<section id="everyone-is-responsible" data-markdown="">
|
|
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|
|
## Everyone is responsible
|
|
|
|
|
|
|
2023-05-26 10:29:31 +02:00
|
|
|
|
- Understand the Ops team
|
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|
|
|
- Grow in mutual trust
|
2023-05-26 00:02:09 +02:00
|
|
|
|
</section>
|
2023-05-23 20:51:40 +02:00
|
|
|
|
</section>
|
|
|
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|
|
|
2023-05-26 00:02:09 +02:00
|
|
|
|
<section id="homework">
|
|
|
|
|
|
<section data-markdown="">
|
|
|
|
|
|
# What to do this Monday?
|
|
|
|
|
|
|
|
|
|
|
|
* Sketch the value stream for a 1-hour
|
|
|
|
|
|
- Discovery
|
|
|
|
|
|
- Selection/prioritisation
|
|
|
|
|
|
- Implementation
|
|
|
|
|
|
- Verification
|
|
|
|
|
|
- Delivery
|
|
|
|
|
|
---
|
|
|
|
|
|
# What to do this Monday?
|
2023-05-23 20:51:40 +02:00
|
|
|
|
|
|
|
|
|
|
* Build quality in
|
2023-05-26 00:02:09 +02:00
|
|
|
|
- test-drive a larger user story
|
|
|
|
|
|
- pair program for an hour daily
|
|
|
|
|
|
- codify a text runbook
|
|
|
|
|
|
---
|
|
|
|
|
|
# What to do this Monday?
|
|
|
|
|
|
|
2023-05-23 20:51:40 +02:00
|
|
|
|
* Work in small batches
|
2023-05-26 00:02:09 +02:00
|
|
|
|
- build a story on `main` behind a feature flag
|
|
|
|
|
|
---
|
|
|
|
|
|
# What to do this Monday?
|
|
|
|
|
|
|
|
|
|
|
|
* Computers perform repetitive tasks, people solve people-solve-problems
|
2023-05-26 10:29:31 +02:00
|
|
|
|
- improve your app's deployment pipeline
|
2023-05-26 00:02:09 +02:00
|
|
|
|
---
|
|
|
|
|
|
# What to do this Monday?
|
|
|
|
|
|
|
2023-05-23 20:51:40 +02:00
|
|
|
|
* Relentlessly pursue continuous improvement
|
2023-05-26 00:02:09 +02:00
|
|
|
|
- got TDD? Go TCR: `(test && commit) || revert`
|
|
|
|
|
|
- got a deploy script? Bring it to the deployment pipeline
|
|
|
|
|
|
- got automated builds? Release each working build to acceptance
|
|
|
|
|
|
- Refactor before implementation
|
|
|
|
|
|
---
|
|
|
|
|
|
# What to do this Monday?
|
|
|
|
|
|
|
2023-05-23 20:51:40 +02:00
|
|
|
|
* Everyone is responsible
|
2023-05-26 00:02:09 +02:00
|
|
|
|
- have lunch with the 🦸🏼♂️ Ops team
|
|
|
|
|
|
- need review? Sync with 👩🏾💻 Sr. Dev at your desk
|
|
|
|
|
|
- need to review? Pair with 👷🏻♂️ Jr. Dev
|
|
|
|
|
|
- propose process improvements
|
2023-05-23 20:51:40 +02:00
|
|
|
|
|
2023-05-26 00:02:09 +02:00
|
|
|
|
---
|
|
|
|
|
|
# What to do this Monday?
|
2023-05-25 06:29:16 +02:00
|
|
|
|
|
2023-05-26 10:29:31 +02:00
|
|
|
|
Ask *"Why can't we deploy this today?"* and automate the answer
|
|
|
|
|
|
</section>
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
|
<section>
|
|
|
|
|
|
<section id="credits">
|
|
|
|
|
|
<h1>Why can't we deploy this today?</h1>
|
|
|
|
|
|
|
|
|
|
|
|
Credits:
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
<li>👸🏻 My lovely wife for telling again and again my slides have too many words</li>
|
|
|
|
|
|
<li><a href="https://lineicons.com/">Lineicons</a> for the brand icons</li>
|
|
|
|
|
|
<li>The Jet-Stream crew for joining me in discovering Continuous Delivery in more depth</li>
|
|
|
|
|
|
<li><a href="https://revealjs.com/">reveal.js</a> for the slides framework</li>
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
|
<section id="endcap">
|
|
|
|
|
|
<h1>Why can't we deploy this today?</h1>
|
2023-05-26 00:02:09 +02:00
|
|
|
|
</section>
|
2023-05-25 06:29:16 +02:00
|
|
|
|
</section>
|
|
|
|
|
|
</div>
|
2023-05-23 20:51:40 +02:00
|
|
|
|
</div>
|
|
|
|
|
|
|
|
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|
|
<script src="dist/reveal.js"></script>
|
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|
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|
|
<script src="plugin/notes/notes.js"></script>
|
|
|
|
|
|
<script src="plugin/markdown/markdown.js"></script>
|
|
|
|
|
|
<script src="plugin/highlight/highlight.js"></script>
|
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|
|
|
|
<script>
|
|
|
|
|
|
// More info about initialization & config:
|
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|
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|
|
// - https://revealjs.com/initialization/
|
|
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|
|
// - https://revealjs.com/config/
|
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|
|
Reveal.initialize({
|
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|
|
hash: true,
|
2023-05-26 10:29:31 +02:00
|
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|
defaultTiming: 42,
|
2023-05-23 20:51:40 +02:00
|
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|
// Learn about plugins: https://revealjs.com/plugins/
|
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|
|
plugins: [RevealMarkdown, RevealHighlight, RevealNotes]
|
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|
|
});
|
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|
</script>
|
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<script>
|
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|
|
document.querySelectorAll('.slides section a[href^="http"]').
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|
forEach(a => a.setAttribute('target', '_blank'))
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</script>
|
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</body>
|
2023-05-19 20:08:46 +02:00
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|
2012-08-04 06:33:27 +02:00
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</html>
|
