The document compares two libraries, Retrofit and Volley, for network communication in Android development. It discusses their query structures, performance speeds with and without caching, and the impact of parallel queries. Retrofit outperforms Volley in terms of speed, especially in parallel processing, indicating a preference for Retrofit in high-performance scenarios.

1. 1
Volley vs Retrofit

2. 2
● What is Retrofit and how it works
● What is Volley and how it works
● Comparison of libraries’ performing speed
● Which one is better to use?

3. 3
Retrofit
Query description:
@GET("/v1/{id}")
Response getSomething(@Path("id") int id);
RestAdapter
RestAdapter APP_SERVER = new RestAdapter.Builder()
.setEndpoint(BuildConfig.HOST)
.setClient(new OkClient(new OkHttpClient()))
.setLogLevel(RestAdapter.LogLevel.FULL)
.build();
Run query:
Communicator.getAppServer().get();

4. 4
Volley
Query description:
StringRequest stringRequest = new
StringRequest(Request.Method. GET, BuildConfig. HOST,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
}
);
Queue initialization:
if (requestQueue == null) {
Network network = new BasicNetwork( new HurlStack());
requestQueue = new RequestQueue( new NoCache(), network);
requestQueue.start();
VolleyLog.DEBUG = true;
}
Run query:
requestQueue.add(stringRequest);

5. 5
Comparison of performance speed without caching
50 queries
Retrofit - 707,5ms
Retorfot SD - 9,3
Volley - 871,36ms
Volley SD - 9,94
300 queries
Retrofit - 854.95ms
Retorfot SD - 11,23
Volley - 847.79ms
Volley SD - 12,8

6. 6
Comparison of performance speed with caching
50 queries
Retrofit - 354,9ms
Retorfot SD - 10,2
Volley - 322,22ms
Volley SD - 8,03

7. 7
Comparison of performance speed of parallel queries:
Chsnge in Volley and Retrofit settings:
Retrofit
.setExecutors(Executors.newFixedThreadPool(50), null)
Volley
requestQueue = new RequestQueue(new NoCache(), network, 50);
Volley ~8s Retrofit ~4s

8. 8
So, which one is better to use?

9. 9
Thanks for your attention!
Alex Bagach
Android Developer