fix(cache): Add new @version data to cache key (#3506)

Author: joshlarson

lib/dotcom/cache/key_generator.ex

@@ -3,6 +3,8 @@ defmodule Dotcom.Cache.KeyGenerator do
   Generate a readable cache key based on the module, function, and arguments.
   """
 
+  @version Application.compile_env(:dotcom, :version)
+
   @behaviour Nebulex.Caching.KeyGenerator
 
   @impl Nebulex.Caching.KeyGenerator
@@ -12,7 +14,7 @@ defmodule Dotcom.Cache.KeyGenerator do
     module_name =
       Util.get_or_save_persistent_term({:key_generator, mod}, fn -> clean_mod(mod) end)
 
-    "#{module_name}|#{fun}|#{unique_id}"
+    "#{module_name}|#{fun}|#{unique_id}|#{@version}"
   end
 
   defp clean_mod(mod) do

lib/dotcom_web/controllers/cache_controller.ex

@@ -54,7 +54,7 @@ defmodule DotcomWeb.CacheController do
     |> Map.update!(:structured_keys, &nest_by_mod_and_fun/1)
   end
 
-  defp parse_structured([mod, fun, base_64_args]) do
+  defp parse_structured([mod, fun, base_64_args, version]) do
     base_64_args
     |> Base.decode64()
     |> case do
@@ -63,7 +63,8 @@ defmodule DotcomWeb.CacheController do
           type: :structured_keys,
           mod: mod,
           fun: fun,
-          args: decoded
+          args: decoded,
+          version: version
         }
 
       _ ->
@@ -225,7 +226,7 @@ defmodule DotcomWeb.CacheController do
 
         <ul>
           <li :for={key <- key_list |> Enum.sort_by(& &1.args)}>
-            <.key_link key={key.raw} display={key.args} />
+            <.key_link key={key.raw} display={"#{key.args} / #{key.version}"} />
           </li>
         </ul>
       </div>