From c3c1251dfd37789e544f9edb6adca57f4dbf8053 Mon Sep 17 00:00:00 2001
From: Lewis Dale <lewis.dale@triptease.com>
Date: Fri, 26 Apr 2024 12:07:36 +0100
Subject: [PATCH] Add post about automatically purging the cache with Bunny,
 and add the other purge calls to the action

---
 .gitea/workflows/build-and-copy.yaml          | 22 +++----
 .../posts/2024/4/auto-purge-bunny-cache.md    | 63 +++++++++++++++++++
 2 files changed, 73 insertions(+), 12 deletions(-)
 create mode 100644 src/blog/posts/2024/4/auto-purge-bunny-cache.md

diff --git a/.gitea/workflows/build-and-copy.yaml b/.gitea/workflows/build-and-copy.yaml
index 5ece68d..dc14223 100644
--- a/.gitea/workflows/build-and-copy.yaml
+++ b/.gitea/workflows/build-and-copy.yaml
@@ -40,15 +40,13 @@ jobs:
           curl --request POST \
             --url 'https://api.bunny.net/purge?url=https%3A%2F%2Flewisdale.dev%2F%2A.xml&async=false' \
             --header 'AccessKey: ${{ secrets.BUNNY_ACCESS_KEY }}'
-      # - name: Purge JSON files from cache
-      #   run:
-      #     - |
-      #       curl --request POST
-      #         --url 'https://api.bunny.net/purge?url=https%3A%2F%2Flewisdale.dev%2F%2A.json&async=false'
-      #         --header 'AccessKey: ${{ secrets.BUNNY_ACCESS_KEY }}'
-      # - name: Purge CSS files from cache
-      #   run:
-      #     - |
-      #       curl --request POST
-      #         --url 'https://api.bunny.net/purge?url=https%3A%2F%2Flewisdale.dev%2F%2A.css&async=false'
-      #         --header 'AccessKey: ${{ secrets.BUNNY_ACCESS_KEY }}'
\ No newline at end of file
+      - name: Purge JSON files from cache
+        run: |
+          curl --request POST \
+            --url 'https://api.bunny.net/purge?url=https%3A%2F%2Flewisdale.dev%2F%2A.json&async=false' \
+            --header 'AccessKey: ${{ secrets.BUNNY_ACCESS_KEY }}'
+      - name: Purge CSS files from cache
+        run: |
+          curl --request POST \
+            --url 'https://api.bunny.net/purge?url=https%3A%2F%2Flewisdale.dev%2F%2A.css&async=false' \
+            --header 'AccessKey: ${{ secrets.BUNNY_ACCESS_KEY }}'
\ No newline at end of file
diff --git a/src/blog/posts/2024/4/auto-purge-bunny-cache.md b/src/blog/posts/2024/4/auto-purge-bunny-cache.md
new file mode 100644
index 0000000..105cb83
--- /dev/null
+++ b/src/blog/posts/2024/4/auto-purge-bunny-cache.md
@@ -0,0 +1,63 @@
+---
+title: Auto-purge my blogs Bunny cache with Actions
+date: 2024-04-26T12:30:00.0Z
+excerpt: How to automatically purge certain files from the Bunny.net cache after deploying my Eleventy blog
+tags:
+    - eleventy
+---
+
+I'm using [Bunny.net (referral link)](https://bunny.net?ref=6x27cy5y27) for my CDN. As part of that, I cache certain files that get hit a lot but aren't updated frequently, such as images, CSS, and my RSS feeds.
+
+I deploy my blog to my VPS using Gitea Actions, and so after I've made some changes, or written a new post, I'd like to purge the cache on my feed files and my CSS. I can do that using the [purge endpoint](https://docs.bunny.net/reference/purgepublic_indexpost) on the Bunny API.
+
+## Purging the cache
+
+The call to do this is fairly simple, and authenticate the request using an API key from my Bunny account settings:
+
+```bash
+ curl --request POST \
+    --url 'https://api.bunny.net/purge?url=<my cached file url>&async=false' \
+    --header 'AccessKey: <My access key>'
+```
+
+For the file URL, I can pass a wildcard in to target all directories, or files of a certain type, such as CSS:
+
+```bash
+ curl --request POST \
+    --url 'https://api.bunny.net/purge?url=https%3A%2F%2Flewisdale.dev%2F%2A.xml&async=false' \
+    --header 'AccessKey: <My access key>'
+```
+
+And this works nicely - the downside here is that unless I want to purge my entire cache (I don't), I have to make a separate call for each file type I want to remove.
+
+## The Gitea Action
+
+I've now added three purge calls to my Gitea actions, which run after I successfully deploy my site to my VPS:
+
+```yaml
+name: Build and copy to prod
+on:
+  push:
+  schedule:
+    - cron: '@hourly'
+jobs:
+  build-and-copy:
+    runs-on: ubuntu-latest
+    steps:
+        ...
+        - name: Purge XML files from cache
+            run: |
+            curl --request POST \
+                --url 'https://api.bunny.net/purge?url=https%3A%2F%2Flewisdale.dev%2F%2A.xml&async=false' \
+                --header 'AccessKey: ${{ secrets.BUNNY_ACCESS_KEY }}'
+        - name: Purge JSON files from cache
+            run: |
+            curl --request POST \
+                --url 'https://api.bunny.net/purge?url=https%3A%2F%2Flewisdale.dev%2F%2A.json&async=false' \
+                --header 'AccessKey: ${{ secrets.BUNNY_ACCESS_KEY }}'
+        - name: Purge CSS files from cache
+            run: |
+            curl --request POST \
+                --url 'https://api.bunny.net/purge?url=https%3A%2F%2Flewisdale.dev%2F%2A.css&async=false' \
+                --header 'AccessKey: ${{ secrets.BUNNY_ACCESS_KEY }}'
+```