Caching with retrofit 2.0.0

Caching.java

 private OkHttpClient getCacheClient(final Context context) {
        Interceptor REWRITE_CACHE_CONTROL_INTERCEPTOR = new Interceptor() {
            @Override public okhttp3.Response intercept(Chain chain) throws IOException {
                okhttp3.Response originalResponse = chain.proceed(chain.request());
                if (isNetworkAvailable(MainApp.getContext())) {
                    // Internet available; read from cache for 1 day
                    // Why? Reduce server load, better UX
                    int maxAge = 60 * 60 * 24;
                    return originalResponse.newBuilder()
                            .header("Cache-Control", "public, max-age=" + maxAge)
                            .build();
                } else {
                    // No internet; tolerate cached data for 1 week
                    int maxStale = 60 * 60 * 24 * 7;
                    return originalResponse.newBuilder()
                            .header("Cache-Control", "public, only-if-cached, max-stale=" + maxStale)
                            .build();
                }
            }
        };

        File httpCacheDirectory = new File(context.getCacheDir(), "cachedir");
        int size = 5 * 1024 * 1024;
        Cache cache = new Cache(httpCacheDirectory, size);

        return new OkHttpClient.Builder()
                .addNetworkInterceptor(REWRITE_CACHE_CONTROL_INTERCEPTOR)
                .cache(cache)
                .build();
    }
    
// Usage:

MovieApi movieApi = new Retrofit.Builder()
                .baseUrl(MovieApi.URL)
                .client(getCacheClient(MainApp.getContext())) // set cache client
                .addConverterFactory(GsonConverterFactory.create()
                .build()
                .create(MovieApi.class);