add more info about cache key generation in proxy-cache-advanced (#6982)

* add more info about cache key generation in proxy-cache-advanced * add links to the params --------- Co-authored-by: lena-larionova <[email protected]>
Kong · Feb 21, 2024 · 7a3761e · 7a3761e
1 parent 2ad1039
commit 7a3761e
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/app/_hub/kong-inc/proxy-cache-advanced/overview/_index.md b/app/_hub/kong-inc/proxy-cache-advanced/overview/_index.md
@@ -34,10 +34,14 @@ Currently the cache key format is hard-coded and cannot be adjusted. Internally,
 represented as a hexadecimal-encoded MD5 sum of the concatenation of the constituent parts calculated as follows:
 
 ```
-key = md5(UUID | method | request)
+key = md5(UUID | method | request | query_params | headers | consumer_groups)
 ```
 
-Where `method` is defined via the OpenResty `ngx.req.get_method()` call, and `request` is defined via the Nginx `$request` variable.
+Where `method` is defined via the OpenResty `ngx.req.get_method()` call, `request` is defined via the Nginx `$request` variable.
+You can control `query_params` and `headers` via the configuration parameters 
+[`vary_query_params`](/hub/kong-inc/proxy-cache-advanced/configuration/#config-vary_query_params) and 
+[`vary_headers`](/hub/kong-inc/proxy-cache-advanced/configuration/#config-vary_headers).
+
 Kong will return the cache key associated with a given request as the `X-Cache-Key` response header.
 It is also possible to precalculate the cache key for a given request as noted above.