From ffd2ce1f501a9383fbae2fe6f7acd3d6e20285ce Mon Sep 17 00:00:00 2001
From: Jake Howard <git@theorangeone.net>
Date: Thu, 29 Aug 2024 22:02:30 +0100
Subject: [PATCH] First pass of updates for Django London

---
 slides.md | 86 +++++++++++++++++--------------------------------------
 1 file changed, 27 insertions(+), 59 deletions(-)

diff --git a/slides.md b/slides.md
index 2a51809..7651d1d 100644
--- a/slides.md
+++ b/slides.md
@@ -1,5 +1,5 @@
 ---
-title: Empowering Django with Background Workers
+title: Bringing Background Workers to Django
 class: text-center
 highlighter: shiki
 transition: slide-left
@@ -9,11 +9,12 @@ themeConfig:
   primary: '#0c4b33'
 ---
 
-# Empowering <logos-django class="[&>path]:fill-white! h-15 w-43"/> with Background Workers
+# Bringing Background Workers to <logos-django class="[&>path]:fill-white! h-15 w-43"/>
 
 ## Jake Howard{.mt-5}
 
-### Djangocon Europe 2024{.mt-5}
+### Django London{.mt-5}
+#### September 2024
 
 <!--
 - Here to talk about Background Workers
@@ -30,6 +31,7 @@ layout: full
 <ul class="list-none! [&>li]:m-0! text-2xl mt-10">
   <li><mdi-fire class="fill-white"/> Senior Systems Engineer @ Torchbox</li>
   <li><logos-wagtail class="fill-white"/> Core, Security & Performance teams @ Wagtail</li>
+  <li><logos-django-icon class="[&>rect]:hidden!" /> Django Software Foundation Member</li>
   <li><mdi-server-plus class="fill-white" /> I'm an avid self-hoster</li>
   <li><mdi-robot-excited class="fill-white" /> I help students build robots in my "spare" time <small>(https://srobo.org)</small></li>
 </ul>
@@ -49,8 +51,9 @@ layout: full
 - Hi
 - I'm Jake
 - Senior Systems Engineer at Torchbox
-- I'm also on the security team, and as of last week the core team for Wagtail
+- I'm also on the security team, core team and performance teams for Wagtail
   - Leading Django-based CMS
+- Since doing this talk at Djangocon, I'm also a DSF member
 - I exist in many places on the internet
 -->
 
@@ -332,7 +335,7 @@ layout: section
 
 <!--
 - Back to Django
-    - This is Djangocon after all
+    - This is Django London after all
 - In Python and Django, there are lots of different frameworks to achieve background workers
 -->
 
@@ -609,6 +612,7 @@ layout: fact
 
 <!--
 - In progress API spec for first-party background workers in Django
+- An approved Enhancement Proposal, slowly making its way into Django itself
 -->
 
 ---
@@ -678,7 +682,9 @@ from wagtail.models import Page
 from django.tasks import task
 
 @task()
-def send_email_to_user(page: Page, user: User):
+def send_email_to_user(page_id: int, user_id: int):
+    page = Page.objects.get(id=page_id)
+    user = User.objects.get(id=user_id)
     email_content = render_to_string("notification-email.html", {"user": user, "page": page})
     send_mail(
       subject=f"A change to {page.title} has been published",
@@ -688,7 +694,7 @@ def send_email_to_user(page: Page, user: User):
     )
 
 for user in page.subscribers.iterator():
-    send_email_to_user.enqueue(user)
+    send_email_to_user.enqueue(user.id)
 ```
 ````
 
@@ -714,48 +720,6 @@ for user in page.subscribers.iterator():
     - With 0 lines changed
 -->
 
----
-layout: center
----
-
-<v-click>
-
-```python
-# settings.py
-EMAIL_BACKEND = "django.core.mail.backends.tasks.SMTPEmailBackend"
-```
-
-</v-click>
-
-<br />
-
-```python
-from django.contrib.auth.models import User
-from django.core.mail import send_mail
-from django.template.loader import render_to_string
-
-from wagtail.models import Page
-
-for user in page.subscribers.iterator():
-    email_content = render_to_string("notification-email.html", {"user": user, "page": page})
-    send_mail(
-      subject=f"A change to {page.title} has been published",
-      message=email_content
-      from_email=None,  # Use the default sender email
-      recipient_list=[user.email]
-    )
-```
-
-<!--
-- In this case, we can actually make it even easier
-- Because email is such a common use case, and so easy to extract
-- Let's go back to the simple implementation
-    - No background workers in sight
-- [click]Instead, we can change the email backend
-- Emails are magically sent in the background automatically
-    - Without additional work
--->
-
 ---
 layout: image-right
 image: /soon.png
@@ -891,7 +855,7 @@ layout: section
 # Where are we now?
 
 <!--
-- I mean, other than Vigo
+- I mean, other than Kraken HQ
 -->
 
 ---
@@ -916,19 +880,17 @@ layout: section
 </div>
 
 <!--
-- You can play with this right now!
-- Download it, play around with it
-    - The dummy backend is great for testing
-    - The immediate backend can help get you started
-    - The ORM backend is where the magic happens
-- Tell me about all the bugs in my code
-    - The more testing we can do now, the better
+- You can use it right now
+    - Please do, it's great!
+    - For some projects, you won't need anything else
+- Report back the bugs
+    - The more testing done now, the better
 - There's still work to do
     - Features
     - Improvements
     - Performance
     - Scalability
-    - etc etc
+    - The list goes on...
 -->
 
 ---
@@ -939,6 +901,8 @@ layout: section
 
 <!--
 - More testing
+- More features
+    - Writing task queues takes time
 - Upstreaming
     - That's the big benefit
         - Else it really is just another standard
@@ -948,6 +912,8 @@ layout: section
     - The more people know about this, the better it is for everyone
     - Developers can start working on integrating now
         - Knowing they can trivially upgrade once it's in Django
+- Integration
+    - Can't use other libraries until the integrations exists
 -->
 
 ---
@@ -1003,6 +969,8 @@ class: flex justify-center flex-col text-xl
     - Bringing the stability and longevity guarantees that come with Django
     - Doesn't mean they'll never come
 - With your help, we can make these happen
+    - Except swappable argument serialization
+        - `pickle` is a bad idea
 -->
 
 ---
@@ -1047,7 +1015,7 @@ layout: section
     - Test it out
     - Report back your issues
     - Suggest improvements
-    - Issues / Discussions are open
+    - Issues / Discussions are open and active
 - If you want to get involved, please do!
     - There's plenty of work to do
     - And I can't do it alone!