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@hellerbarde
hellerbarde / latency.markdown
Created May 31, 2012 13:16 — forked from jboner/latency.txt
Latency numbers every programmer should know

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

@rponte
rponte / StringUtils.java
Last active April 10, 2024 23:01
Removing accents and special characters in Java: StringUtils.java and StringUtilsTest.java
package br.com.triadworks.rponte.util;
import java.text.Normalizer;
public class StringUtils {
/**
* Remove toda a acentuação da string substituindo por caracteres simples sem acento.
*/
public static String unaccent(String src) {
@ryanflorence
ryanflorence / static_server.js
Last active March 13, 2024 08:05
Node.JS static file web server. Put it in your path to fire up servers in any directory, takes an optional port argument.
var http = require("http"),
url = require("url"),
path = require("path"),
fs = require("fs")
port = process.argv[2] || 8888;
http.createServer(function(request, response) {
var uri = url.parse(request.url).pathname
, filename = path.join(process.cwd(), uri);