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@utaal
utaal / Makefile
Created September 5, 2011 16:42
webserver using libuv
webserver: webserver.c libuv/uv.a http-parser/http_parser.o
gcc -I libuv/include \
-lrt -lm -lpthread -o \
webserver webserver.c \
libuv/uv.a http-parser/http_parser.o
libuv/uv.a:
$(MAKE) -C libuv
http-parser/http_parser.o:
@mbostock
mbostock / .block
Last active January 12, 2020 03:40
The Euro Debt Crisis
license: gpl-3.0
@hrldcpr
hrldcpr / tree.md
Last active September 1, 2024 07:04
one-line tree in python

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

@jboner
jboner / latency.txt
Last active November 15, 2024 14:00
Latency Numbers Every Programmer Should Know
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
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) {