okhttp explains in detail:
1. Basic knowledge and application of OKHTTP learning http://blog.csdn.net/briblue/article/details/52870941
2. Advanced features of OKHTTP learning http://blog.csdn.net/briblue/article/details/52911998
3. Detailed explanation of OKHTTP cache configuration http://blog.csdn.net/briblue/article/details/52920531
Retrofit explained in detail:
1.Say hello to retrofithttp://blog.csdn.net/ghost_programmer/article/details/52372065
2. Retrofit series of tutorials : http://blog.csdn.net/sk719887916/article/details/51597816
Rxjava explains in detail:
https://gold.xitu.io/post/580103f20e3dd90057fc3e6d