(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
# Hello, and welcome to makefile basics. | |
# | |
# You will learn why `make` is so great, and why, despite its "weird" syntax, | |
# it is actually a highly expressive, efficient, and powerful way to build | |
# programs. | |
# | |
# Once you're done here, go to | |
# http://www.gnu.org/software/make/manual/make.html | |
# to learn SOOOO much more. |
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
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https://github.com/djvirgen/virgen-acl Simple and elegant, create your own checks. No middleware?
https://github.com/OptimalBits/node_acl Use as middleware, create your own roles and access. Great choice.
https://github.com/tschaub/authorized Similar to connect roles... but a bit more robust? you can create roles and action, and associate many roles with that action
extern mod extra; | |
use extra::json::*; | |
/* | |
* This function manages to do absolutely no copying, which is pretty cool. | |
* | |
* "What are all those `'r`s?" you ask. Well, they're liftime parameters. They | |
* indicate how long something lasts (before it's freed). They can't change how | |
* long something lives for, they only allow you to tell the compiler stuff it |
var cluster = require('cluster'); | |
var PORT = +process.env.PORT || 1337; | |
if (cluster.isMaster) { | |
// In real life, you'd probably use more than just 2 workers, | |
// and perhaps not put the master and worker in the same file. | |
cluster.fork(); | |
cluster.fork(); | |
cluster.on('disconnect', function(worker) { |
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 |