Optimizing Your Apps For Today's Internet

Transcript

1. Optimizing Your Apps For Today’s Internet Andrii Moskvin Senior Software Developer Sigma Software, 1 Ac. Proskura Str., Kharkiv 30.03.19
2. Sigma Software, 30.03.19 • Explicit Congestion Notification (traffic jams on route)? What your service support? • TCP Fast Open 2 • Multipath TCP (MPTCP) (routing decision on per packet basics instead on per connection) (habr.com)
3. Sigma Software, 30.03.19 brotli Compression gzip Enable compression on servers: 3
4. Sigma Software, 30.03.19 Quick UDP Internet Connections (QUIC) - successor to replace TCP (work started by Google) https://jacobianengineering.com/blog/2016/11/1543/ 4
5. Sigma Software, 30.03.19 TLS 1.3 Works out-of-the box from iOS 12.2 5
6. Sigma Software, 30.03.19 Public Certificate Authority Log Every certificate used on the public Internet and trusted by browsers is stored in at least two public logs. Everyone can access these logs. 6
7. Sigma Software, 30.03.19 • There is performance hit on short DNS records (less than 60 seconds) DNS • DNS Long vs Short 7
8. Sigma Software, 30.03.19 HTTP/2 vs HTTP/1 HTTP/2 solves HTTP head of line blocking 8
9. Sigma Software, 30.03.19 Network Link Conditioner is your friend! 9
10. Sigma Software, 30.03.19 Network.framework Don’t use BSD sockets in 2019!!!! Check WWDC 2018 Session 715 10
11. Sigma Software, 30.03.19 • Fewer objects - better • QoS aware - task.resume() will check the priority of the queue it was called • URLSession.waitsForConnectivity instead of SCNetworkReachability • URLSessionConfiguration.isDiscretionary • UrlRequest.NetworkServiceType.responsiveData URLSession 11
12. Sigma Software, 30.03.19 Use Cache-Control header on servers to mark content which should be cached and which not DON’T CACHE UNIQUE CONTENT!!!! Tips 12
13. Sigma Software, 30.03.19 Useful links:
 • WWDC 2018 Session 714 • WWDC 2018 Session 715 Thank you for your attention!
 Questions? 13 My contacts: Telegram Facebook