Add changelog entry to Action Pack as well.

The entry was a result of a combination of changes in Action View
and Action Controller.

1 files changed, 24 insertions, 0 deletions

diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md
index ca55a063e7..5724e24bd5 100644
--- a/actionpack/CHANGELOG.md
+++ b/actionpack/CHANGELOG.md
@@ -1,3 +1,27 @@
+*   Show cache hits and misses when rendering partials.
+
+    Partials using the `cache` helper will show whether a render hit or missed
+    the cache:
+
+    ```
+    Rendered messages/_message.html.erb in 1.2 ms [cache hit]
+    Rendered recordings/threads/_thread.html.erb in 1.5 ms [cache miss]
+    ```
+
+    This removes the need for the old fragment cache logging:
+
+    ```
+    Read fragment views/v1/2914079/v1/2914079/recordings/70182313-20160225015037000000/d0bdf2974e1ef6d31685c3b392ad0b74 (0.6ms)
+    Rendered messages/_message.html.erb in 1.2 ms [cache hit]
+    Write fragment views/v1/2914079/v1/2914079/recordings/70182313-20160225015037000000/3b4e249ac9d168c617e32e84b99218b5 (1.1ms)
+    Rendered recordings/threads/_thread.html.erb in 1.5 ms [cache miss]
+    ```
+
+    Though that full output can be reenabled with
+    `config.action_controller.enable_fragment_cache_logging = true`.
+
+    *Stan Lo*
+
 *   Don't override the `Accept` header in integration tests when called with `xhr: true`.
 
     Fixes #25859.