javascript - 通过特定查询或突变重置缓存

Question

我想使用 react-apollo 的客户端从键或查询中重置部分缓存，而不是使用 client.resetStore() 清除整个缓存。

例子:

import { withApollo } from "react-apollo";
import { compose } from "recompose";
import MyComponent from "./MyComponent";

const cleanEspecificCache = ({ client }) => () =>{
  // What i do here?
}

const enhance = compose(
 withApollo,
 withHandlers({cleanEspecificCache})
)

export default enhance(MyComponent);

我该怎么做才能让它发挥作用？谢谢!

Answer 1

根据这个问题，目前不支持部分 Apollo 缓存清除: https://github.com/apollographql/apollo-feature-requests/issues/4

您可以使用 fechPolicy: 'network-only' 完全不缓存特定查询:

const enhance = compose(
  graphql(
    gql`{
      food {
        id
        name
      }
    }`,
    {
      options: { fetchPolicy: 'network-only' },
    }
  ),
  ...
);

export default enhance(MyComponent);

如果您想深入兔子洞并立即找到解决方案，您可以尝试https://github.com/sysgears/apollo-cache-router 它可以将您的缓存拆分为两个或更多个缓存，然后您可以单独重置这些缓存:

import { InMemoryCache } from 'apollo-cache-inmemory';
import ApolloCacheRouter from 'apollo-cache-router';
import { hasDirectives } from 'apollo-utilities';

const generalCache = new InMemoryCache();
const specialCache = new InMemoryCache();
const cache = ApolloCacheRouter.override(
  ApolloCacheRouter.route([generalCache, specialCache], document => {
    if (hasDirectives(['special'], document)) {
      // Pass all queries marked with @special into specialCache
      return [specialCache];
    } else {
      // Pass all the other queries to generalCache
      return [generalCache];
    }
  })
);

每当您想重置 specialCache 时，请在代码中调用 specialCache.reset()。