diff --git a/demo-api/collections/ngram-stopwords.yml b/demo-api/collections/ngram-stopwords.yml
index bd5837a..7b5429a 100644
--- a/demo-api/collections/ngram-stopwords.yml
+++ b/demo-api/collections/ngram-stopwords.yml
@@ -30,3 +30,14 @@ search:
               enabled: true
               maxDocs: 150000
               maxMemoryMB: 512
+    - name: combined
+      mode: combined
+      rrf:
+          k: 60
+          topK: 100
+          weights:
+              fuzzy: 1.0
+      combinedCache:
+          enabled: true
+          ttl: 45s
+          maxEntries: 1000
diff --git a/index.d.ts b/index.d.ts
index 6592e82..1dc8550 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -90,6 +90,12 @@ declare global {
         minMatchRatio?: number
     }
 
+    export interface CombinedCacheConfig {
+        enabled?: boolean
+        ttl?: string
+        maxEntries?: number
+    }
+
     export interface NgramInMemoryConfig {
         enabled?: boolean
         maxDocs?: number
@@ -193,6 +199,8 @@ declare global {
         filter?: { [key: string]: any }
         /** Ngram search configuration */
         ngram?: NgramConfig
+        /** Result cache for combined searches */
+        combinedCache?: CombinedCacheConfig
         /** Regex search configuration */
         regex?: RegexConfig
         /** Custom scoring for eval/filter search */
diff --git a/schemas/config/collection.schema.json b/schemas/config/collection.schema.json
index dd4ec33..edc234d 100644
--- a/schemas/config/collection.schema.json
+++ b/schemas/config/collection.schema.json
@@ -321,7 +321,8 @@
               "type": "array",
               "items": {
                 "type": "integer",
-                "minimum": 1
+                "minimum": 2,
+                "maximum": 10
               }
             },
             "normalize": {
@@ -387,6 +388,22 @@
             }
           }
         },
+        "combinedCache": {
+          "type": "object",
+          "additionalProperties": false,
+          "properties": {
+            "enabled": {
+              "type": "boolean"
+            },
+            "ttl": {
+              "type": "string"
+            },
+            "maxEntries": {
+              "type": "integer",
+              "minimum": 0
+            }
+          }
+        },
         "regex": {
           "type": "object",
           "additionalProperties": false,