diff --git a/src/utils.js b/src/utils.js
index 31e7a1c..1cf2a74 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -76,8 +76,14 @@ export function getModelByName(modelName) {
   return modelList.filter(model => model.modelName == modelName)[0];
 }
 
-export function jsonToCacheKey(obj) {
-  const normalized = canonicalize(obj);
-  const hash = crypto.createHash('sha256').update(normalized).digest('hex');
-  return hash;
+export function getQueryToCacheKey({ model, id, populate }) {
+  const populateKey = [];
+  for (const pop of populate) {
+    if (typeof pop === 'string') {
+      populateKey.push(pop);
+    } else if (typeof pop === 'object') {
+      populateKey.push(pop.path);
+    }
+  }
+  return `${model}:${id?.toString()}-${populateKey.join(',')}`;
 }