该问题的解决方法是通过自定义一个缓存配置函数来解决。具体步骤如下：

1. 创建一个自定义缓存配置函数，并绑定到ApolloClient中。

import { InMemoryCache, defaultDataIdFromObject } from '@apollo/client';

const cache = new InMemoryCache({
  typePolicies: {
    Query: {
      fields: {
        posts: {
          keyArgs: false,
          merge(existing = [], incoming, { args: { after } }) {
            return after ? [...existing, ...incoming] : incoming;
          },
          read(existing, { args: { after = null, first = 5 } }) {
            if (!after) {
              return existing && existing.slice(0, first);
            }
            const index = existing.findIndex((item) => item.cursor === after);
            return existing && existing.slice(index + 1, index + 1 + first);
          },
        },
      },
    },
  },
  dataIdFromObject: (object) => {
    switch (object.__typename) {
      case 'Post':
        return object.id;
      default:
        return defaultDataIdFromObject(object);
    }
  },
});

const client = new ApolloClient({
  uri: 'http://localhost:4000/graphql',
  cache,
});

2. 使用自定义的缓存配置函数。

import { gql, useQuery } from '@apollo/client';

const POSTS_QUERY = gql`
  query PostQuery($first: Int!, $after: String) {
    posts(first: $first, after: $after) @connection(key: "posts") @relayStylePagination {
      edges {
        node {
          id
          title
          body
        }
        cursor
      }
    }
  }
`;

function Posts() {
  const { data, fetchMore } = useQuery(POSTS_QUERY, {
    variables: { first: 1, after: null },
  });

  const { edges, pageInfo } = data.posts || {};

  const loadMore = () => {
    fetchMore({
      variables: { first: 1, after: pageInfo.endCursor },
    });
  };