diff --git a/.gitea/workflows/l4-cache.yaml b/.gitea/workflows/l4-cache.yaml
new file mode 100644
index 0000000..bb24459
--- /dev/null
+++ b/.gitea/workflows/l4-cache.yaml
@@ -0,0 +1,14 @@
+name: l4-cache
+on: [push]
+jobs:
+  cache:
+    runs-on: docker
+    steps:
+      - name: 写入待缓存内容
+        run: mkdir -p /tmp/testcache && date > /tmp/testcache/stamp
+      - uses: actions/cache@v4
+        with:
+          path: /tmp/testcache
+          key: cache-test-fixed-key
+      - name: 查看缓存内容
+        run: cat /tmp/testcache/stamp || echo "cache miss"
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