From 28d06b28ae6a85be108bdbfa14a0758f0816ae0c Mon Sep 17 00:00:00 2001
From: Patrick Sy <patrick.sy@telekom.de>
Date: Fri, 28 Feb 2025 18:23:04 +0100
Subject: [PATCH] chore: Added some more research

---
 caching.md | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/caching.md b/caching.md
index d39dd06..82bfaf5 100644
--- a/caching.md
+++ b/caching.md
@@ -79,10 +79,14 @@
 
 Open source / free version
 
+License evaluation needed
+
 #### Artifactory
 
 Open source / free version
 
+License evaluation needed
+
 #### Artipie
 
 - might be abandoned / low dev activity / needs new maintainer
@@ -94,6 +98,21 @@ Open source / free version
 
 #### kube-image-keeper
 
+[GH](https://github.com/enix/kube-image-keeper)
+
+- Creates a DaemonSet, installing a service on each worker node
+- Works within the cluster and rewrites image coordinates on the fly
+
+- Pro: fine grained caching control
+  - select/exempt images / namespaces
+  - cache invalidation
+- Pro: config within k8s or as k8s objects
+
+- Con: Invasive
+- Con: Rewrites image coordinates using a mutating webhook
+- Con: Must be hosted within each (workload) cluster
+- Con BLOCKER: Cannot handle image digest due to manifest rewrites
+
 #### 'Simple' Squid proxy (or similar)
 
 #### Harbor