I've designed a lot of RPC protocols in my career. One pattern that's worked well basically goes as follows:
// Client calls: print('Hello World\n')
-> [1, "print", "Hello World!\n"]
// Server sends return value (or lack of return vvalue)
<- [-1]
// Client calls: add(1, 2)
-> [2, "add", 1, 2]
| /* http://redd.it/2zna5q | |
| * Fibonacci example: | |
| * (1) (2) + | |
| * 0:0 | |
| * 1:1 | |
| * 20 | |
| */ | |
| #define _BSD_SOURCE // MAP_ANONYMOUS | |
| #include <stdio.h> | |
| #include <stdlib.h> |
| /* http://redd.it/2z68di */ | |
| #define _BSD_SOURCE // MAP_ANONYMOUS | |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <stdint.h> | |
| #include <string.h> | |
| #include <sys/mman.h> | |
| #define PAGE_SIZE 4096 |
People
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| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
| # Video: http://rubyhoedown2008.confreaks.com/08-chris-wanstrath-keynote.html | |
| Hi everyone, I'm Chris Wanstrath. | |
| When Jeremy asked me to come talk, I said yes. Hell yes. Immediately. But | |
| then I took a few moments and thought, Wait, why? Why me? What am I supposed | |
| to say that's interesting? Something about Ruby, perhaps. Maybe the | |
| future of it. The future of something, at least. That sounds | |
| keynote-y. | |
