···

       
7
       
7
       
 
       


     

       
8
       
8
       
 
       
As we've learned [on the page on "Normalized

     

       
9
       
9
       
 
       
Caching"](./normalized-caching.md#normalizing-relational-data), when Graphcache receives an API

     

       
10
       
10
       
-
       
result it will traverse and store all its data to its cache in a normalised structure. Each entity

     

       
10
       
10
       
+
       
result it will traverse and store all its data to its cache in a normalized structure. Each entity

     

       
11
       
11
       
 
       
that is found in a result will be stored under the entity's key.

     

       
12
       
12
       
 
       


     

       
13
       
13
       
 
       
A query's result is represented as a graph, which can also be understood as a tree structure,

     

···

       
224
       
224
       
 
       
This error occurs when the cache can't generate a key for an entity. The key

     

       
225
       
225
       
 
       
would then effectively be `null`, and the entity won't be cached by a key.

     

       
226
       
226
       
 
       


     

       
227
       
227
       
-
       
Conceptually this means that an entity won't be normalised but will indeed

     

       
227
       
227
       
+
       
Conceptually this means that an entity won't be normalized but will indeed

     

       
228
       
228
       
 
       
be cached by the parent's key and field, which is displayed in the first

     

       
229
       
229
       
 
       
part of the warning.

     

       
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230