OkHttp exclude APIs from caching

Question

I'm using Retrofit and OkHttp client for making network calls. My server supports Etag caching and I have added cache to okHttp client . There are some APIs which I don't want to cache

This is my okHttpClient config

    OkHttpClient okHttpClient(Context context,
                                         HttpLoggingInterceptor loggingInterceptor,Cache okHttpCache) {
            final OkHttpClient.Builder builder = new OkHttpClient.Builder()
                    .addInterceptor(loggingInterceptor)
                    .cache(okHttpCache)
            return builder.build();
        }


    Cache cache(Context context) {
    return new Cache(new File(context.getCacheDir(), "cache"),10 * 1024 * 1024);
     }

Can I ignore some of the APIs from caching?

Answer 1

If you are using only OkHttp library then you could specify cache control policy as CacheControl.FORCE_NETWORK to your request object. More info here: https://github.com/square/okhttp/issues/1496

If you are using OkHttp in couple with Retrofit, you could add Cache-Control: no-cache header to your request definition method inside your interface: (spelling updated in example)

@Headers("Cache-Control: no-cache")
@GET("users/me")
Call<User> getUser();

Answer 2

Okhttp3 Provides an Iterator for urls request in cache

public Iterator<String> urls() throws IOException {
  hasNext();
  next();
  remove();
}

You can simple use this to check against the APIs of interest and ignore it. see doc http://java.sun.com/javase/6/docs/api/java/util/Iterator.html?is-external=true