diff --git a/dist/cjs/index.js b/dist/cjs/index.js
index 29ec6cd..820ff72 100644
--- a/dist/cjs/index.js
+++ b/dist/cjs/index.js
@@ -90,8 +90,10 @@ var createSelector = function createSelector(_temp) {
 };
 var selector = /*#__PURE__*/createSelector();
 
-var useSnapshot = function useSnapshot(state) {
-  return shim.useSyncExternalStore(state.subscribe, state.get, state.get);
+var useSnapshot = function useSnapshot(_ref) {
+  var subscribe = _ref.subscribe,
+    get = _ref.get;
+  return shim.useSyncExternalStore(subscribe, get, get);
 };
 
 exports.createSelector = createSelector;
diff --git a/dist/es/react/useSnapshot.js b/dist/es/react/useSnapshot.js
index 4d3795e..c63c22d 100644
--- a/dist/es/react/useSnapshot.js
+++ b/dist/es/react/useSnapshot.js
@@ -1,7 +1,9 @@
 import { useSyncExternalStore } from 'use-sync-external-store/shim';
 
-var useSnapshot = function useSnapshot(state) {
-  return useSyncExternalStore(state.subscribe, state.get, state.get);
+var useSnapshot = function useSnapshot(_ref) {
+  var subscribe = _ref.subscribe,
+    get = _ref.get;
+  return useSyncExternalStore(subscribe, get, get);
 };
 
 export { useSnapshot };
diff --git a/dist/middleware/cjs/index.js b/dist/middleware/cjs/index.js
index 66d9ae5..a43b033 100644
--- a/dist/middleware/cjs/index.js
+++ b/dist/middleware/cjs/index.js
@@ -65,29 +65,42 @@ var persist = function persist(_temp) {
       var key = _ref3[0],
         set = _ref3[1];
       var value = getStorage().getItem(key);
-      value && set(JSON.parse(value), 'HYDRATE');
+      value && set(JSON.parse(value), "HYDRATE_" + key);
     });
     states.length = 0;
   };
   return middleware;
 };
 
-var reduxDevtools = function reduxDevtools(_ref, config) {
-  var set = _ref.set,
-    get = _ref.get;
-  if (typeof window === 'undefined' || !window.__REDUX_DEVTOOLS_EXTENSION__) return set;
-  var devtools = window.__REDUX_DEVTOOLS_EXTENSION__.connect({
-    name: config == null ? void 0 : config.key
+var reduxDevtools = function reduxDevtools(_temp) {
+  var _ref = _temp === void 0 ? {} : _temp,
+    name = _ref.name;
+  var devtoolsExt;
+  if (typeof window === 'undefined' || !(devtoolsExt = window.__REDUX_DEVTOOLS_EXTENSION__)) return function (_ref2) {
+    var set = _ref2.set;
+    return set;
+  };
+  var devtools = devtoolsExt.connect({
+    name: name
   });
-  devtools.init(get());
-  return function (value, action) {
-    set.apply(null, arguments);
-    devtools.send(typeof action === 'string' ? {
-      type: action
-    } : action || {
-      type: 'SET',
-      value: value
-    }, get());
+  var mergedState = {};
+  return function (_ref3, config) {
+    var set = _ref3.set,
+      get = _ref3.get;
+    var key = config == null ? void 0 : config.key;
+    if (!key) throw new Error('[reactish-state] state should be provided with a string `key` in the config object when the `reduxDevtools` middleware is used.');
+    mergedState[key] = get();
+    devtools.init(mergedState);
+    return function (value, action) {
+      set.apply(null, arguments);
+      mergedState[key] = get();
+      devtools.send(typeof action === 'string' ? {
+        type: action
+      } : action || {
+        type: "SET_" + key,
+        value: value
+      }, mergedState);
+    };
   };
 };
 
diff --git a/dist/middleware/es/persist.js b/dist/middleware/es/persist.js
index 762d4db..62e463c 100644
--- a/dist/middleware/es/persist.js
+++ b/dist/middleware/es/persist.js
@@ -23,7 +23,7 @@ var persist = function persist(_temp) {
       var key = _ref3[0],
         set = _ref3[1];
       var value = getStorage().getItem(key);
-      value && set(JSON.parse(value), 'HYDRATE');
+      value && set(JSON.parse(value), "HYDRATE_" + key);
     });
     states.length = 0;
   };
diff --git a/dist/middleware/es/reduxDevtools.js b/dist/middleware/es/reduxDevtools.js
index bb0e929..de85cd2 100644
--- a/dist/middleware/es/reduxDevtools.js
+++ b/dist/middleware/es/reduxDevtools.js
@@ -1,19 +1,32 @@
-var reduxDevtools = function reduxDevtools(_ref, config) {
-  var set = _ref.set,
-    get = _ref.get;
-  if (typeof window === 'undefined' || !window.__REDUX_DEVTOOLS_EXTENSION__) return set;
-  var devtools = window.__REDUX_DEVTOOLS_EXTENSION__.connect({
-    name: config == null ? void 0 : config.key
+var reduxDevtools = function reduxDevtools(_temp) {
+  var _ref = _temp === void 0 ? {} : _temp,
+    name = _ref.name;
+  var devtoolsExt;
+  if (typeof window === 'undefined' || !(devtoolsExt = window.__REDUX_DEVTOOLS_EXTENSION__)) return function (_ref2) {
+    var set = _ref2.set;
+    return set;
+  };
+  var devtools = devtoolsExt.connect({
+    name: name
   });
-  devtools.init(get());
-  return function (value, action) {
-    set.apply(null, arguments);
-    devtools.send(typeof action === 'string' ? {
-      type: action
-    } : action || {
-      type: 'SET',
-      value: value
-    }, get());
+  var mergedState = {};
+  return function (_ref3, config) {
+    var set = _ref3.set,
+      get = _ref3.get;
+    var key = config == null ? void 0 : config.key;
+    if (!key) throw new Error('[reactish-state] state should be provided with a string `key` in the config object when the `reduxDevtools` middleware is used.');
+    mergedState[key] = get();
+    devtools.init(mergedState);
+    return function (value, action) {
+      set.apply(null, arguments);
+      mergedState[key] = get();
+      devtools.send(typeof action === 'string' ? {
+        type: action
+      } : action || {
+        type: "SET_" + key,
+        value: value
+      }, mergedState);
+    };
   };
 };
 
diff --git a/dist/plugin/cjs/index.js b/dist/plugin/cjs/index.js
index 295f50d..d216ad1 100644
--- a/dist/plugin/cjs/index.js
+++ b/dist/plugin/cjs/index.js
@@ -14,17 +14,29 @@ var applyPlugin = function applyPlugin() {
   };
 };
 
-var reduxDevtools = function reduxDevtools(_ref, config) {
-  var get = _ref.get,
-    subscribe = _ref.subscribe;
-  if (typeof window === 'undefined' || !window.__REDUX_DEVTOOLS_EXTENSION__) return;
-  var devtools = window.__REDUX_DEVTOOLS_EXTENSION__.connect({
-    name: config == null ? void 0 : config.key
-  });
-  devtools.init(get());
-  subscribe(function () {
-    return devtools.init(get());
+var reduxDevtools = function reduxDevtools(_temp) {
+  var _ref = _temp === void 0 ? {} : _temp,
+    name = _ref.name;
+  var devtoolsExt;
+  if (typeof window === 'undefined' || !(devtoolsExt = window.__REDUX_DEVTOOLS_EXTENSION__)) return function () {
+    /*do nothing*/
+  };
+  var devtools = devtoolsExt.connect({
+    name: name
   });
+  var mergedState = {};
+  return function (_ref2, config) {
+    var get = _ref2.get,
+      subscribe = _ref2.subscribe;
+    var key = config == null ? void 0 : config.key;
+    if (!key) throw new Error('[reactish-state] state should be provided with a string `key` in the config object when the `reduxDevtools` plugin is used.');
+    var updateState = function updateState() {
+      mergedState[key] = get();
+      devtools.init(mergedState);
+    };
+    updateState();
+    subscribe(updateState);
+  };
 };
 
 exports.applyPlugin = applyPlugin;
diff --git a/dist/plugin/es/reduxDevtools.js b/dist/plugin/es/reduxDevtools.js
index e5163fb..807d2ff 100644
--- a/dist/plugin/es/reduxDevtools.js
+++ b/dist/plugin/es/reduxDevtools.js
@@ -1,14 +1,26 @@
-var reduxDevtools = function reduxDevtools(_ref, config) {
-  var get = _ref.get,
-    subscribe = _ref.subscribe;
-  if (typeof window === 'undefined' || !window.__REDUX_DEVTOOLS_EXTENSION__) return;
-  var devtools = window.__REDUX_DEVTOOLS_EXTENSION__.connect({
-    name: config == null ? void 0 : config.key
-  });
-  devtools.init(get());
-  subscribe(function () {
-    return devtools.init(get());
+var reduxDevtools = function reduxDevtools(_temp) {
+  var _ref = _temp === void 0 ? {} : _temp,
+    name = _ref.name;
+  var devtoolsExt;
+  if (typeof window === 'undefined' || !(devtoolsExt = window.__REDUX_DEVTOOLS_EXTENSION__)) return function () {
+    /*do nothing*/
+  };
+  var devtools = devtoolsExt.connect({
+    name: name
   });
+  var mergedState = {};
+  return function (_ref2, config) {
+    var get = _ref2.get,
+      subscribe = _ref2.subscribe;
+    var key = config == null ? void 0 : config.key;
+    if (!key) throw new Error('[reactish-state] state should be provided with a string `key` in the config object when the `reduxDevtools` plugin is used.');
+    var updateState = function updateState() {
+      mergedState[key] = get();
+      devtools.init(mergedState);
+    };
+    updateState();
+    subscribe(updateState);
+  };
 };
 
 export { reduxDevtools };
diff --git a/examples/examples/counter/Counter.tsx b/examples/examples/counter/Counter.tsx
index dede71d..9aebb60 100644
--- a/examples/examples/counter/Counter.tsx
+++ b/examples/examples/counter/Counter.tsx
@@ -17,7 +17,7 @@ const reducer = (state: number, { type, by = 1 }: { type: ActionTypes; by?: numb
 const persistMiddleware = persist({ prefix: 'counter-', getStorage: () => sessionStorage });
 
 const counterState = createState({
-  middleware: applyMiddleware(persistMiddleware, reduxDevtools)
+  middleware: applyMiddleware(persistMiddleware, reduxDevtools({ name: 'counterApp-state' }))
 })(
   0,
   (set, get) => ({
diff --git a/examples/examples/todo/todo.ts b/examples/examples/todo/todo.ts
index 8402217..8ca5fef 100644
--- a/examples/examples/todo/todo.ts
+++ b/examples/examples/todo/todo.ts
@@ -4,7 +4,7 @@ import { reduxDevtools as devtoolsPlugin } from 'reactish-state/plugin';
 
 const persistMiddleware = persist({ prefix: 'todoApp-' });
 const state = createState({
-  middleware: applyMiddleware(immer, persistMiddleware, reduxDevtools)
+  middleware: applyMiddleware(immer, persistMiddleware, reduxDevtools({ name: 'todoApp-state' }))
 });
 
 interface Todo {
@@ -33,13 +33,13 @@ const todoListState = state(
         { type: 'todos/deleteItem', id }
       )
   }),
-  { key: 'todo-list' }
+  { key: 'todoList' }
 );
 
 type VisibilityFilter = 'ALL' | 'COMPLETED' | 'IN_PROGRESS';
 const visibilityFilterState = state('IN_PROGRESS' as VisibilityFilter, null, { key: 'filter' });
 
-const selector = createSelector({ plugin: devtoolsPlugin });
+const selector = createSelector({ plugin: devtoolsPlugin({ name: 'todoApp-selector' }) });
 const visibleTodoList = selector(
   todoListState,
   visibilityFilterState,
@@ -53,7 +53,7 @@ const visibleTodoList = selector(
         return todoList.filter(({ isCompleted }) => !isCompleted);
     }
   },
-  { key: 'visible-todos' }
+  { key: 'visibleTodos' }
 );
 
 const statsSelector = selector(
diff --git a/package-lock.json b/package-lock.json
index 38dddd0..aae3409 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "reactish-state",
-  "version": "0.8.1",
+  "version": "0.9.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "reactish-state",
-      "version": "0.8.1",
+      "version": "0.9.0",
       "license": "MIT",
       "dependencies": {
         "use-sync-external-store": "^1.2.0"
diff --git a/package.json b/package.json
index ab8cdef..be6e183 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "reactish-state",
-  "version": "0.8.1",
+  "version": "0.9.0",
   "description": "",
   "author": "Zheng Song",
   "license": "MIT",
diff --git a/src/middleware/persist.ts b/src/middleware/persist.ts
index d08b947..46fa800 100644
--- a/src/middleware/persist.ts
+++ b/src/middleware/persist.ts
@@ -30,7 +30,7 @@ const persist: Persist = ({ prefix, getStorage = () => localStorage } = {}) => {
   middleware.hydrate = () => {
     states.forEach(([key, set]) => {
       const value = getStorage().getItem(key);
-      value && set(JSON.parse(value), 'HYDRATE');
+      value && set(JSON.parse(value), `HYDRATE_${key}`);
     });
     states.length = 0;
   };
diff --git a/src/middleware/reduxDevtools.ts b/src/middleware/reduxDevtools.ts
index e60c698..fa489aa 100644
--- a/src/middleware/reduxDevtools.ts
+++ b/src/middleware/reduxDevtools.ts
@@ -1,18 +1,33 @@
 import type {} from '@redux-devtools/extension';
 import type { Middleware } from '../common';
 
-const reduxDevtools: Middleware = ({ set, get }, config) => {
-  if (typeof window === 'undefined' || !window.__REDUX_DEVTOOLS_EXTENSION__) return set;
+type ReduxDevtools = (options?: { name?: string }) => Middleware;
 
-  const devtools = window.__REDUX_DEVTOOLS_EXTENSION__.connect({ name: config?.key });
-  devtools.init(get());
+const reduxDevtools: ReduxDevtools = ({ name } = {}) => {
+  let devtoolsExt: Window['__REDUX_DEVTOOLS_EXTENSION__'];
+  if (typeof window === 'undefined' || !(devtoolsExt = window.__REDUX_DEVTOOLS_EXTENSION__))
+    return ({ set }) => set;
 
-  return function (value, action) {
-    set.apply(null, arguments as unknown as Parameters<typeof set>);
-    devtools.send(
-      typeof action === 'string' ? { type: action } : action || { type: 'SET', value },
-      get()
-    );
+  const devtools = devtoolsExt.connect({ name });
+  const mergedState: { [index: string]: unknown } = {};
+
+  return ({ set, get }, config) => {
+    const key = config?.key;
+    if (!key)
+      throw new Error(
+        '[reactish-state] state should be provided with a string `key` in the config object when the `reduxDevtools` middleware is used.'
+      );
+    mergedState[key] = get();
+    devtools.init(mergedState);
+
+    return function (value, action) {
+      set.apply(null, arguments as unknown as Parameters<typeof set>);
+      mergedState[key] = get();
+      devtools.send(
+        typeof action === 'string' ? { type: action } : action || { type: `SET_${key}`, value },
+        mergedState
+      );
+    };
   };
 };
 
diff --git a/src/plugin/reduxDevtools.ts b/src/plugin/reduxDevtools.ts
index 6c892ea..f9d7262 100644
--- a/src/plugin/reduxDevtools.ts
+++ b/src/plugin/reduxDevtools.ts
@@ -1,12 +1,33 @@
 import type {} from '@redux-devtools/extension';
 import type { Plugin } from '../common';
 
-const reduxDevtools: Plugin = ({ get, subscribe }, config) => {
-  if (typeof window === 'undefined' || !window.__REDUX_DEVTOOLS_EXTENSION__) return;
+type ReduxDevtools = (options?: { name?: string }) => Plugin;
 
-  const devtools = window.__REDUX_DEVTOOLS_EXTENSION__.connect({ name: config?.key });
-  devtools.init(get());
-  subscribe(() => devtools.init(get()));
+const reduxDevtools: ReduxDevtools = ({ name } = {}) => {
+  let devtoolsExt: Window['__REDUX_DEVTOOLS_EXTENSION__'];
+  if (typeof window === 'undefined' || !(devtoolsExt = window.__REDUX_DEVTOOLS_EXTENSION__))
+    return () => {
+      /*do nothing*/
+    };
+
+  const devtools = devtoolsExt.connect({ name });
+  const mergedState: { [index: string]: unknown } = {};
+
+  return ({ get, subscribe }, config) => {
+    const key = config?.key;
+    if (!key)
+      throw new Error(
+        '[reactish-state] state should be provided with a string `key` in the config object when the `reduxDevtools` plugin is used.'
+      );
+
+    const updateState = () => {
+      mergedState[key] = get();
+      devtools.init(mergedState);
+    };
+
+    updateState();
+    subscribe(updateState);
+  };
 };
 
 export { reduxDevtools };
diff --git a/src/react/useSnapshot.ts b/src/react/useSnapshot.ts
index 684bd08..06f70c8 100644
--- a/src/react/useSnapshot.ts
+++ b/src/react/useSnapshot.ts
@@ -1,7 +1,7 @@
 import type { Reactish } from '../common';
 import { useSyncExternalStore } from 'use-sync-external-store/shim';
 
-const useSnapshot = <T>(state: Reactish<T>) =>
-  useSyncExternalStore<T>(state.subscribe, state.get, state.get);
+const useSnapshot = <T>({ subscribe, get }: Reactish<T>) =>
+  useSyncExternalStore<T>(subscribe, get, get);
 
 export { useSnapshot };
diff --git a/types/middleware/reduxDevtools.d.ts b/types/middleware/reduxDevtools.d.ts
index 2282977..9b54bf3 100644
--- a/types/middleware/reduxDevtools.d.ts
+++ b/types/middleware/reduxDevtools.d.ts
@@ -1,3 +1,6 @@
 import type { Middleware } from '../common';
-declare const reduxDevtools: Middleware;
+declare type ReduxDevtools = (options?: {
+    name?: string;
+}) => Middleware;
+declare const reduxDevtools: ReduxDevtools;
 export { reduxDevtools };
diff --git a/types/plugin/reduxDevtools.d.ts b/types/plugin/reduxDevtools.d.ts
index d5f1df8..aacd9b5 100644
--- a/types/plugin/reduxDevtools.d.ts
+++ b/types/plugin/reduxDevtools.d.ts
@@ -1,3 +1,6 @@
 import type { Plugin } from '../common';
-declare const reduxDevtools: Plugin;
+declare type ReduxDevtools = (options?: {
+    name?: string;
+}) => Plugin;
+declare const reduxDevtools: ReduxDevtools;
 export { reduxDevtools };
diff --git a/types/react/useSnapshot.d.ts b/types/react/useSnapshot.d.ts
index 2a11b1c..12a41b3 100644
--- a/types/react/useSnapshot.d.ts
+++ b/types/react/useSnapshot.d.ts
@@ -1,3 +1,3 @@
 import type { Reactish } from '../common';
-declare const useSnapshot: <T>(state: Reactish<T>) => T;
+declare const useSnapshot: <T>({ subscribe, get }: Reactish<T>) => T;
 export { useSnapshot };