Added updating higher priority caches with results if found in lower caches

Author: Scott Taylor

lib/multi_caching.js

@@ -96,7 +96,6 @@ var multiCaching = function(caches, options) {
         /**
          * Then put back the options in the args Array
          */
-        args.push(options);
 
         if (multi) {
             /**
@@ -120,7 +119,7 @@ var multiCaching = function(caches, options) {
                 var _isCacheableValue = getIsCacheableValueFunction(cache);
 
                 if (multi) {
-                    addResultToMap(result, _isCacheableValue);
+                    addResultToMap(result, _isCacheableValue, i);
 
                     if (keysToFetch.length === 0 || i === caches.length - 1) {
                         // Return an Array with the values merged from all the caches
@@ -155,7 +154,7 @@ var multiCaching = function(caches, options) {
             return cb(err, result);
         });
 
-        function addResultToMap(result, isCacheable) {
+        function addResultToMap(result, isCacheable, cacheIndex) {
             var key;
             var diff = 0;
 
@@ -171,6 +170,10 @@ var multiCaching = function(caches, options) {
                     // Add the result to our map
                     mapResult[key] = res;
 
+                    for (let j = 0; j < cacheIndex; j++ ) {
+                      caches[j].store.set(key, res);
+                    }
+                    
                     // delete key from our keysToFetch array
                     keysToFetch.splice(i - diff, 1);
                     diff += 1;