阿波罗服务器+ RedisCache无法缓存

Question

https://www.apollographql.com/docs/apollo-server/features/data-sources.html#Implementing-your-own-cache-backend处的阿波罗基本示例 但是当我尝试时，它失败了。

const typeDefs = gql`

type Launch{
    id: ID! 
    site: String 
}

  type Query {
    launches: [Launch]! @cacheControl(maxAge: 6000)
  }
`;

const resolvers = {
    Query: {
        launches: async (_, __, { dataSources }) => {
            return dataSources.launchAPI.getAllLaunches();
        },
    },
};

const server = new ApolloServer({
    typeDefs,
    resolvers,
    tracing: true,
    cacheControl: {
        defaultMaxAge: 5,
        stripFormattedExtensions: false,
        calculateCacheControlHeaders: false,
    },
    cache: new RedisCache({
        host: '127.0.0.1',
        port: '6379',
        connectTimeout: 5000,
        reconnectOnError: function (err) {
            console.log('Reconnect on error', err);
            var targetError = 'READONLY';
            if (err.message.slice(0, targetError.length) === targetError) {
            // Only reconnect when the error starts with "READONLY"
                return true;
            }
        },
        retryStrategy: function (times) {
            console.log('Redis Retry', times);
            if (times >= 3) {
                return undefined;
            }
            var delay = Math.min(times * 50, 2000);
            return delay;
        },
        socket_keepalive: false,
        // Options are passed through to the Redis client
    }),
    dataSources: () => {
        return {
            launchAPI: new LaunchAPI(),
        };
    },
});


server.listen().then(({ url }) => {
    console.log(`?  Server ready at ${url}`);
});

无论我尝试什么，@cacheControl似乎都无法缓存。如何缓存？ 有一个简单的示例说明如何在Apollo Server中实现基本缓存吗？