1. 在Context提供者组件中使用React.memo()包裹组件，只有当提供者组件的props发生变化时，使用者才会重新渲染。例如：

const MyContext = React.createContext();

const MyProvider = (props) => {
  const [state, setState] = useState({name: 'John', age: 30});

  return (
    
      {props.children}
    
  )
}

const MyComponent = () => {
  return (
    
      {({state, setState}) => (
        

          
Name: {state.name}
          
Age: {state.age}
           setState({name: 'Jessica', age: 25})}>Update Info
        
      )}
    
  )
}

export default React.memo(MyComponent);

2. 在使用Context的消费者组件中使用useContext()，它直接从上下文中返回提供者的值，而不需要使用消费者。例如：

const MyContext = React.createContext();

const MyProvider = (props) => {
  const [state, setState] = useState({name: 'John', age: 30});

  return (
    
      {props.children}
    
  )
}

const MyComponent = () => {
  const {state, setState} = useContext(MyContext);
  
  return (
    

      
Name: {state.name}
      
Age: {state.age}
       setState({name: 'Jessica', age: 25})}>Update Info
    
  )
}

export default MyComponent;