Webcamp Zagreb 2013

Slides for a talk "Concurrency" that I gave at Webcamp Zagreb.

1. Concurrency @gperetin Sunday, October 27, 13
2. Goran Peretin (@gperetin) Sunday, October 27, 13
3. Goran Peretin (@gperetin) Sunday, October 27, 13
4. Goran Peretin (@gperetin) Sunday, October 27, 13
5. Goran Peretin (@gperetin) Sunday, October 27, 13
6. Sadržaj Concurrency Parallelism Problemi/rješenja Sunday, October 27, 13
7. Sunday, October 27, 13
8. Demo time! Sunday, October 27, 13
9. Python3 & Ruby Sunday, October 27, 13
10. Concurrency Izvršavanje više taskova u nekom vremenskom periodu. Sunday, October 27, 13
11. Parallelism Izvršavanje više taskova istovremeno. Sunday, October 27, 13
12. Concurrency != Parallelism Sunday, October 27, 13
13. Process-based concurrency task == proces Sunday, October 27, 13
14. Thread-based concurrency task == thread Sunday, October 27, 13
15. GIL (Ruby & Python) • Global Interpreter Lock • dva threada se ne mogu izvršavati istovremeno Sunday, October 27, 13
16. Ruby i Python ne mogu imati thread-based parallelism. Sunday, October 27, 13
17. PHP Sunday, October 27, 13
18. PHP • PHP nema threadove • Nije thread-safe • PHP-FPM • Apache (mod_php) Sunday, October 27, 13
19. Java & .NET Sunday, October 27, 13
20. Java & .NET Sunday, October 27, 13
21. Problemi? • broj procesa i threadova • RAM Sunday, October 27, 13
22. Blocking I/O OS pauzira thread koji napravi I/O request. Za izvršavanje drugog requesta treba nam novi thread. Sunday, October 27, 13
23. Rješenja? Non-blocking I/O Lightweight processes Sunday, October 27, 13
24. Non-blocking I/O Twisted, Tornado EventMachine Node.js Sunday, October 27, 13
25. Lightweight processes Erlang (actors) Go (goroutines) --- Python (greenlets) Ruby (fibers) Sunday, October 27, 13
26. Što da koristim? Sunday, October 27, 13
27. Hvala! Pitanja? Sunday, October 27, 13