feat(server): impl doc history (#5004)

packages/backend/server/src/config/def.ts

@@ -362,6 +362,14 @@ export interface AFFiNEConfig {
        */
       experimentalMergeWithJwstCodec: boolean;
     };
+    history: {
+      /**
+       * How long the buffer time of creating a new history snapshot when doc get updated.
+       *
+       * in {ms}
+       */
+      interval: number;
+    };
   };
 
   payment: {

packages/backend/server/src/config/default.ts

@@ -209,6 +209,9 @@ export const getDefaultAFFiNEConfig: () => AFFiNEConfig = () => {
         updatePollInterval: 3000,
         experimentalMergeWithJwstCodec: false,
       },
+      history: {
+        interval: 1000 * 60 * 10 /* 10 mins */,
+      },
     },
     payment: {
       stripe: {