forked from slides/empowering-django-with-background-workers
Slide tweaks from script tweaks
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2 changed files with 145 additions and 55 deletions
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public/celery.svg
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public/celery.svg
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After Width: | Height: | Size: 1.5 KiB |
171
slides.md
171
slides.md
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@ -40,8 +40,7 @@ addons:
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layout: center
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---
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# Django isn't _just_ for websites
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# Django is a web framework
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```mermaid
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flowchart LR
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@ -54,9 +53,7 @@ flowchart LR
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<style>
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.mermaid {
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margin-top: 2rem;
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text-align: center;
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transform: scale(1.5);
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}
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</style>
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@ -64,52 +61,66 @@ flowchart LR
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layout: full
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---
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# Django isn't _just_ for websites
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```mermaid
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flowchart BT
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flowchart TD
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U[User 🧑💻]
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D[\Django/]
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DB[(Database)]
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C[(Cache)]
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E>Email]
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EA[External API]
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V[[Video Transcode]]
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ML((Machine Learning))
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V[[Video Transcoding]]
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R[Reporting]
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ML((Machine<br>Learning))
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U---->|Request|D
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D---->|Response|U
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U<--->D
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D-.-DB & E & EA & V & ML & C
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D---DB
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D-..-E & EA & V & R & ML
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```
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<style>
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.mermaid {
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text-align: center;
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}
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</style>
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---
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layout: full
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---
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# Background Workers!
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```mermaid
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flowchart BT
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flowchart TD
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U[User 🧑💻]
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D[\Django/]
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DB[(Database)]
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C[(Cache)]
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E>Email]
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EA[External API]
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V[[Video Transcode]]
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ML((Machine Learning))
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B{{Background Processing}}
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V[[Video Transcoding]]
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R[Reporting]
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ML((Machine<br>Learning))
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U--->|Request|D
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D--->|Response|U
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B{{<strong>Background Processing</strong>}}
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D---B
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U<-->D
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D-.-C & DB
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D-..-B
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B---E & V & ML & EA
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B---C & DB
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B---E & EA & V & R & ML
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```
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<style>
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.mermaid {
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text-align: center;
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}
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</style>
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---
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layout: cover
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layout: section
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---
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# Background Workers?
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@ -126,11 +137,11 @@ flowchart LR
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R2{Runner}
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R3{Runner}
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D<--->S<-..->R1 & R2 & R3
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D<----->S<-....->R1 & R2 & R3
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```
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---
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layout: cover
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layout: section
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---
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# When?
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@ -139,8 +150,6 @@ layout: cover
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layout: fact
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---
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```mermaid
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flowchart BT
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D[\Django/]
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@ -163,14 +172,14 @@ flowchart BT
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```
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---
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layout: cover
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layout: section
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---
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# Background Workers _in Django_
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---
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layout: cover
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background: https://docs.celeryq.dev/en/stable/_static/celery_512.png
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background: /celery.svg
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---
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# Celery!
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@ -178,6 +187,7 @@ background: https://docs.celeryq.dev/en/stable/_static/celery_512.png
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<style>
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.slidev-layout {
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background: white;
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background-size: contain !important;
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}
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</style>
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@ -216,6 +226,29 @@ background: https://images.unsplash.com/photo-1522096823084-2d1aa8411c13?q=80&w=
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layout: center
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---
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# Sending an email
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```python {all|7|8|9-14|all}
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from django.contrib.auth.models import User
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from django.core.mail import send_mail
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from django.template.loader import render_to_string
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from wagtail.models import Page
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for user in page.subscribers.iterator():
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email_content = render_to_string("notification-email.html", {"user": user, "page": page})
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send_mail(
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subject=f"A change to {page.title} has been published",
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message=email_content
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from_email=None, # Use the default sender email
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recipient_list=[user.email]
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)
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```
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---
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layout: center
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---
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```python {all|18|19|10|11-16|all|18-19|all}
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from django.contrib.auth.models import User
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from django.core.mail import send_mail
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@ -228,7 +261,7 @@ from wagtail.models import Page
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def send_email_to_user(page: Page, user: User):
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email_content = render_to_string("notification-email.html", {"user": user, "page": page})
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send_mail(
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subject="A page has been published",
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subject=f"A change to {page.title} has been published",
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message=email_content
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from_email=None, # Use the default sender email
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recipient_list=[user.email]
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@ -242,7 +275,7 @@ for user in page.subscribers.iterator():
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layout: center
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---
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# A problem
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# Using <span v-click.hide="1">RQ</span><span v-click="1"><s class="opacity-60">RQ</s> Celery</span>
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````md magic-move
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```python
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@ -257,7 +290,7 @@ from wagtail.models import Page
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def send_email_to_user(page: Page, user: User):
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email_content = render_to_string("notification-email.html", {"user": user, "page": page})
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send_mail(
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subject="A page has been published",
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subject=f"A change to {page.title} has been published",
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message=email_content
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from_email=None, # Use the default sender email
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recipient_list=[user.email]
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@ -280,7 +313,7 @@ from my_celery_config import app
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def send_email_to_user(page: Page, user: User):
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email_content = render_to_string("notification-email.html", {"user": user, "page": page})
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send_mail(
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subject="A page has been published",
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subject=f"A change to {page.title} has been published",
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message=email_content
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from_email=None, # Use the default sender email
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recipient_list=[user.email]
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@ -291,6 +324,12 @@ for user in page.subscribers.iterator():
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```
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````
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<style>
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.slidev-vclick-hidden {
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display: none;
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}
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</style>
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---
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layout: image
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image: /situation.png
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@ -311,7 +350,7 @@ layout: fact
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# `django.tasks`
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<div class="absolute right-1/2 translate-x-1/2 mt-6">
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<div class="absolute right-1/2 translate-x-1/2 mt-12">
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<QRCode
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:width="120"
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:height="120"
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@ -338,6 +377,8 @@ class: flex items-center text-xl
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layout: center
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---
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# <span v-click.hide="1">Using Celery</span><span v-click="1">Using <code>django.tasks</code></span>
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````md magic-move
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```python
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from django.contrib.auth.models import User
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@ -352,7 +393,7 @@ from my_celery_config import app
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def send_email_to_user(page: Page, user: User):
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email_content = render_to_string("notification-email.html", {"user": user, "page": page})
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send_mail(
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subject="A page has been published",
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subject=f"A change to {page.title} has been published",
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message=email_content
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from_email=None, # Use the default sender email
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recipient_list=[user.email]
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@ -375,7 +416,7 @@ from django.tasks import task
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def send_email_to_user(page: Page, user: User):
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email_content = render_to_string("notification-email.html", {"user": user, "page": page})
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send_mail(
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subject="A page has been published",
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subject=f"A change to {page.title} has been published",
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message=email_content
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from_email=None, # Use the default sender email
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recipient_list=[user.email]
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@ -386,6 +427,12 @@ for user in page.subscribers.iterator():
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```
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````
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<style>
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.slidev-vclick-hidden {
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display: none;
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}
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</style>
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---
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layout: center
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---
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@ -395,11 +442,12 @@ from django.contrib.auth.models import User
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from django.core.mail import send_mail
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from django.template.loader import render_to_string
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email_content = render_to_string("email-template.html", {"page": page})
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from wagtail.models import Page
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for user in page.subscribers.iterator():
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email_content = render_to_string("notification-email.html", {"user": user, "page": page})
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send_mail(
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subject="The page has changed",
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subject=f"A change to {page.title} has been published",
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message=email_content
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from_email=None, # Use the default sender email
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recipient_list=[user.email]
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@ -417,7 +465,6 @@ EMAIL_BACKEND = "django.core.mail.backends.tasks.SMTPEmailBackend"
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</v-click>
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---
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layout: image-right
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image: /soon.png
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@ -426,34 +473,31 @@ class: flex justify-center text-2xl flex-col
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# Q: Why something new?
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<v-click>
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### A: It doesn't have to be
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</v-click>
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---
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layout: image-right
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image: https://images.unsplash.com/photo-1525683879097-8babce1c602a?q=80&w=1335&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D
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class: flex justify-center text-2xl flex-col
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class: flex justify-center text-xl flex-col
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---
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# Q: Why something built-in?
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- Improve interoperability
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- Reduce cognitive load
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- Reduce barrier to entry
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- Reduce cognitive load
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- Reduce complexity for smaller projects
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- Improve interoperability
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- Use what's already there
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- A common API
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---
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layout: center
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transition: fade
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---
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{.max-h-48.mx-auto}
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{.h-32.mx-auto}
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## vs
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{.max-h-32.mx-auto}
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{.h-36.mx-auto}
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<style>
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@ -468,11 +512,11 @@ transition: fade
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layout: center
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---
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{.max-h-48.mx-auto}
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{.h-32.mx-auto}
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## vs
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{.max-h-32.mx-auto}
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{.max-h-36.mx-auto}
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<style>
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@ -503,7 +547,7 @@ layout: section
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---
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layout: cover
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background: https://docs.celeryq.dev/en/stable/_static/celery_512.png
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background: /celery.svg
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---
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# Is this the end?
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@ -511,6 +555,7 @@ background: https://docs.celeryq.dev/en/stable/_static/celery_512.png
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<style>
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.slidev-layout {
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background: white;
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background-size: contain !important;
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}
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</style>
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@ -531,6 +576,7 @@ class: flex justify-center flex-col text-xl
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- Cron-based scheduling
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- Task timeouts
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- Swappable argument serialization
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- ...
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---
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layout: cover
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@ -545,11 +591,26 @@ layout: section
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# What's next?
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<v-click>
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## `pip install django-tasks`
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<div class="absolute right-1/2 translate-x-1/2 mt-12">
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<QRCode
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:width="120"
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:height="120"
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data="https://pypi.org/project/django-tasks/"
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:dotsOptions="{ color: 'white' }"
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/>
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</div>
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</v-click>
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---
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layout: end
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---
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QUESTIONS?
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END
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<div class="absolute right-1/2 bottom-4 translate-x-1/2">
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<QRCode
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|
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