Cache based on params

In my use case I am fetching many resources based on some parameter, mapId. I’d like to cache the responses of the actions based on the url rather than the action type.

For example, I have an action getFeatures that fetches a url with a 2 hour cache. Despite the url changing based on a passed in parameter which will alter the response the existing CacheMiddleware will not respect this as a different request.

const getFeatures = createAction(`get features`, ({ mapId }) => {
  return {
    request: {
      url: `/v2/maps/features/?map=${mapId}`
    },
    meta: {
      cache: 7200, // 2 hours
    }
  };
});

[klis87]

Nice. However, I think that this library should have 1st caching support anyway, because with service worker you need to manage it yourself plus you need to sync urls between service workers and redux actions.

I really want caching multiple resources built in in this libary, with ability to set cacheSize in action.meta so users could control its size.

I am not sure when I will have time to do it though, hopefully sooner than later. I will let you know once done. Good you have alternative as well, so you won’t be blocked.

[klis87]

Actually I figured it out, we just need extra action.meta.cacheHit flag, which will be appended by middleware, thats enough to communicate with sendRequest. We could use it also in requestsReducer not to increment pending counter on request with cache hit.