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+++ b/slides.md
@@ -313,3 +313,295 @@ layout: section
## 2:
# Frontend Caching
+
+---
+layout: fact
+---
+
+```mermaid
+flowchart LR
+ U[User]
+ CDN{Content
Delivery Network}
+ W[(Wagtail)]
+
+ U--->CDN
+ CDN-..->W
+```
+
+---
+layout: fact
+---
+
+```mermaid
+flowchart TD
+ U1[🧑💻]
+ U2[🧑💻]
+ U3[🧑💻]
+ U4[🧑💻]
+ U5[🧑💻]
+ U6[🧑💻]
+ U7[🧑💻]
+ U8[🧑💻]
+ U9[🧑💻]
+ U10[🧑💻]
+ U11[🧑💻]
+ U12[🧑💻]
+ U13[🧑💻]
+ CDN{Content
Delivery Network}
+ W[(Wagtail)]
+
+ U1--->CDN
+ U2--->CDN
+ U3--->CDN
+ U4--->CDN
+ U5--->CDN
+ U6--->CDN
+ U7--->CDN
+ U8--->CDN
+ U9--->CDN
+ U10--->CDN
+ U11--->CDN
+ U12--->CDN
+ U13--->CDN
+ CDN-...->W
+```
+
+---
+layout: image
+image: https://www.cloudflare.com/network-maps/cloudflare-pops-2O04nulSdNrRpJR9fs9OKv.svg
+---
+
+Source: Cloudflare
+
+
+
+---
+layout: cover
+background: /wagtail-homepage.png
+---
+
+# An example
+
+---
+layout: image
+image: /map.jpg
+transition: fade
+---
+
+---
+layout: cover
+background: /map.jpg
+---
+
+# ~XXms
+
+
+
+---
+layout: fact
+---
+
+```mermaid
+flowchart LR
+ U[User]
+
+ subgraph Content Delivery Network
+ CDN{Content
Delivery Network}
+ C[(Cache)]
+ end
+
+ W[(Wagtail)]
+
+ U---->CDN
+ CDN-.->C
+ C---->W
+ C-.->CDN
+```
+
+---
+layout: fact
+---
+
+```mermaid
+flowchart LR
+ U[User]
+ A[Admin]
+
+ subgraph Content Delivery Network
+ CDN{Content
Delivery Network}
+ C[(Cache)]
+ end
+
+ W[(Wagtail)]
+
+ U---->CDN
+ CDN-.->C
+ C---->W
+ C-.->CDN
+
+ A---->CDN
+ CDN---->W
+```
+
+---
+layout: fact
+---
+
+# Content is cached!
+
+```mermaid
+flowchart LR
+ U1[User]
+ U2[User]
+ U3[User]
+
+ subgraph Content Delivery Network
+ CDN{Content
Delivery Network}
+ C[(Cache)]
+ end
+
+ W[(Wagtail)]
+
+ U1===>CDN
+ U2===>CDN
+ U3===>CDN
+ CDN==>C
+ C==>CDN
+ C-.....->W
+```
+
+---
+layout: image
+image: /wagtail-homepage-typo.png
+---
+
+---
+layout: section
+---
+
+## Solution:
+# Frontend Cache Invalidation
+### Wagtail secret sauce
+
+---
+layout: fact
+---
+
+```mermaid
+flowchart LR
+ U[User]
+
+ subgraph Content Delivery Network
+ CDN{Content
Delivery Network}
+ C[(Cache)]
+ end
+
+ W[(Wagtail)]
+
+ U--->CDN
+ CDN-->C
+ C-->CDN
+ C-..->W
+
+ W-.->|Frontend Cache Invalidation|CDN
+```
+
+---
+layout: center
+---
+
+# `settings.py`
+
+### 1.
+
+```python {3}
+INSTALLED_APPS = [
+ ...
+ "wagtail.contrib.frontend_cache"
+]
+```
+
+#### 2.
+
+```python
+WAGTAILFRONTENDCACHE = {
+ 'cloudflare': {
+ 'BACKEND': 'wagtail.contrib.frontend_cache.backends.CloudflareBackend',
+ 'BEARER_TOKEN': os.environ["CF_BEARER_TOKEN"],
+ 'ZONEID': os.environ["CF_ZONE_ID"],
+ },
+}
+```
+
+#### 3. ???
+
+#### 4. Profit!
+
+
+
+---
+layout: fact
+---
+
+```mermaid
+flowchart LR
+ A[Admin]
+
+ subgraph Content Delivery Network
+ CDN{Content
Delivery Network}
+ C[(Cache)]
+ end
+
+ W[(Wagtail)]
+
+ A-->|Publish new content to
/blog/post-1
|W
+
+ W-.->|PURGE /blog/post-1
|CDN
+
+ CDN-.->C
+```
+
+---
+layout: cover
+background: https://d1nvwtjgmbo5v5.cloudfront.net/media/images/Screen_Shot_2015-05-14_at_09.01.5.2e16d0ba.fill-1200x996.png
+---
+
+# Conclusion
+
+---
+layout: cover
+---
+
+
+
+# Performance means:
+
+
+- Users are happier
+- Servers are happier
+- The planet is happier
+
+
+
+---
+layout: end
+---