diff --git a/src/app/techrecord/(pages)/redux-example/page.tsx b/src/app/techrecord/(pages)/redux-example/page.tsx
index 429a02d..697bd01 100644
--- a/src/app/techrecord/(pages)/redux-example/page.tsx
+++ b/src/app/techrecord/(pages)/redux-example/page.tsx
@@ -1,14 +1,12 @@
 'use client';
 
-import { decrement, getCatFacts, increment } from '@/libs/features';
+import { decrement, increment } from '@/libs/features';
 import { useAppDispatch, useAppSelector } from '@/libs/hooks';
-import type { CatFact } from '@/types';
 
 import styles from './page.module.css';
 
 export default function ReduxExample() {
   const count = useAppSelector((state) => state.counter.data);
-  const catFacts = useAppSelector((state) => state.catFacts.data);
   const dispatch = useAppDispatch();
 
   return (
@@ -23,31 +21,6 @@ export default function ReduxExample() {
           Increase
         </button>
       </div>
-      <h2 className={styles.title}>API Example (Cat Facts)</h2>
-      <div>
-        <button type="button" onClick={() => dispatch(getCatFacts())}>
-          Get Cat Facts
-        </button>
-        <div>
-          {catFacts &&
-            catFacts.map((catFact: CatFact) => (
-              <div key={catFact._id}>
-                <span>---------------------------</span>
-                <p>
-                  status: [ verified: {catFact.status.verified}, sentCount:{' '}
-                  {catFact.status.sentCount} ]
-                </p>
-                <p>
-                  type: {catFact.type}, id: {catFact._id}
-                </p>
-                <p>text: {catFact.text}</p>
-                <p>created date: {catFact.createdAt}</p>
-                <p>updated date: {catFact.updatedAt}</p>
-                <p>user: {catFact.user}</p>
-              </div>
-            ))}
-        </div>
-      </div>
     </>
   );
 }
diff --git a/src/libs/api/AsyncReducers.ts b/src/libs/api/AsyncReducers.ts
deleted file mode 100644
index e903c95..0000000
--- a/src/libs/api/AsyncReducers.ts
+++ /dev/null
@@ -1,76 +0,0 @@
-/* eslint-disable no-param-reassign */
-import type {
-  ActionReducerMapBuilder,
-  AsyncThunk,
-  CaseReducer,
-  PayloadAction,
-} from '@reduxjs/toolkit';
-import type { AsyncThunkConfig } from '@reduxjs/toolkit/dist/createAsyncThunk';
-
-import type { AsyncState } from '@/types';
-
-export class AsyncReducers {
-  /**
-   * @author Juun
-   * @param builder
-   * @example
-   * ```ts
-   * const asyncThunk = AsyncThunk.create(...);
-   * const slice = createSlice({
-   *   ...,
-   *   reducers: {},
-   *   extraReducers: (builder) => {
-   *     // use default reducers:
-   *     AsyncReducers.create(builder)(asyncThunk);
-   *     // customize reducers:
-   *     AsyncReducers.create(builder)(asyncThunk, {
-   *       onFulfilled: (state, action) => {
-   *         // Your reducer action here
-   *       },
-   *       onPending: (state, action) => {
-   *         // Your reducer action here
-   *       },
-   *       ...,
-   *     })
-   *   }
-   * })
-   * ```
-   */
-  static create = <D = any, State = AsyncState<D[]>>(
-    builder: ActionReducerMapBuilder<State>,
-  ) => {
-    return (
-      asyncThunk: AsyncThunk<any, any, AsyncThunkConfig>,
-      options: {
-        onFulfilled?: CaseReducer<State, PayloadAction<any>>;
-        onPending?: CaseReducer<State, PayloadAction<undefined>>;
-        onRejected?: CaseReducer<State, PayloadAction<any>>;
-      } = {},
-    ) => {
-      const { onFulfilled, onPending, onRejected } = {
-        onFulfilled: (state: any, action: PayloadAction) => {
-          state.data = action.payload;
-          state.status = 'fulfilled';
-        },
-        onPending: (state: any) => {
-          state.status = 'pending';
-        },
-        onRejected: (state: any) => {
-          state.status = 'rejected';
-        },
-        ...options,
-      };
-
-      builder
-        .addCase(asyncThunk.fulfilled, (state, action) =>
-          onFulfilled(state, action),
-        )
-        .addCase(asyncThunk.pending, (state, action) =>
-          onPending(state, action),
-        )
-        .addCase(asyncThunk.rejected, (state, action) =>
-          onRejected(state, action),
-        );
-    };
-  };
-}
diff --git a/src/libs/api/index.ts b/src/libs/api/index.ts
index 875e6f7..b7e5f2c 100644
--- a/src/libs/api/index.ts
+++ b/src/libs/api/index.ts
@@ -1,2 +1 @@
-export * from './AsyncReducers';
 export * from './AsyncThunk';
diff --git a/src/libs/features/catFacts/catFactsSlice.ts b/src/libs/features/catFacts/catFactsSlice.ts
deleted file mode 100644
index 45dcf29..0000000
--- a/src/libs/features/catFacts/catFactsSlice.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-/* eslint-disable no-param-reassign */
-import { createSlice } from '@reduxjs/toolkit';
-
-import { AsyncReducers, AsyncThunk } from '@/libs/api';
-import type { AsyncState } from '@/types';
-
-const initialState: AsyncState<any> = {
-  data: null,
-  status: 'fulfilled',
-};
-
-export const getCatFacts = AsyncThunk.create('CatFacts')({
-  url: 'https://cat-fact.herokuapp.com/facts',
-  method: 'GET',
-});
-
-const slice = createSlice({
-  name: 'catFacts',
-  initialState,
-  reducers: {},
-  extraReducers: (builder) => AsyncReducers.create(builder)(getCatFacts),
-});
-
-export const catFactsReducer = slice.reducer;
diff --git a/src/libs/features/index.ts b/src/libs/features/index.ts
index 13ee889..6b58f60 100644
--- a/src/libs/features/index.ts
+++ b/src/libs/features/index.ts
@@ -1,4 +1,3 @@
 export * from './apiSlice';
 export * from './auth/authSlice';
-export * from './catFacts/catFactsSlice';
 export * from './counter/counterSlice';
diff --git a/src/libs/store.ts b/src/libs/store.ts
index 5f92c56..4442335 100644
--- a/src/libs/store.ts
+++ b/src/libs/store.ts
@@ -1,17 +1,11 @@
 import { configureStore } from '@reduxjs/toolkit';
 
-import {
-  apiSlice,
-  authReducer,
-  catFactsReducer,
-  counterReducer,
-} from '@/libs/features';
+import { apiSlice, authReducer, counterReducer } from '@/libs/features';
 
 export const makeStore = () => {
   return configureStore({
     reducer: {
       counter: counterReducer,
-      catFacts: catFactsReducer,
       auth: authReducer,
       [apiSlice.reducerPath]: apiSlice.reducer,
     },