bingoohuang’s gists

bingoohuang / DifferenceClassNamesTest.java

Last active December 19, 2015 07:09

In Java: What is the difference between: Object o1= .... o1.getClass().getSimpleName(); o1.getClass().getName(); o1.getClass().getCanonicalName();

	/**
	In Java: What is the difference between:
	Object o1= ....
	o1.getClass().getSimpleName();
	o1.getClass().getName();
	o1.getClass().getCanonicalName();
	**/
	@Test
	public void testNames() throws Exception {
	//primative

bingoohuang / IPToCountryCodeTest.java

Created July 3, 2013 09:42

find country code by ip using ip ranges implemented by TreeMap

	/**
	* This utility provides methods to either convert an IPv4 address to its long format or a 32bit dotted format.
	*
	* @author Aion
	* Created on 22/11/12
	*/
	public static class IPv4 {

	/**
	* Returns the long format of the provided IP address.

bingoohuang / Dom4jDemo.java

Created September 16, 2013 07:35

how to let DOM4J to generate <name></name> other than <name/>


	import org.dom4j.Document;
	import org.dom4j.DocumentHelper;
	import org.dom4j.Element;
	import org.dom4j.io.OutputFormat;
	import org.dom4j.io.XMLWriter;

	import java.io.IOException;
	import java.io.StringWriter;

bingoohuang / nginx_limit_by_cookie.conf.lua

Last active December 23, 2015 07:49

nginx limit by login user's cookie

	lua_package_path ";;$prefix/conf/?.lua;";

	geo $http_x_forwarded_for $mallcity {
	ranges;
	default 11\|110;
	#proxy 0.0.0.0/0;

	1.0.1.0-1.0.3.255 38\|380;
	1.0.8.0-1.0.15.255 51\|510;
	}

bingoohuang / urlshortener.lua

Last active September 8, 2023 11:09

url shortener base on nginx lua and resty redis

	local _M = {
	_VERSION = '0.1'
	}

	local connect = function()
	local redis = require "resty.redis"
	local red = redis:new()
	red:set_timeout(1000) -- 1 sec
	local ok, err = red:connect("127.0.0.1", 6379)
	if not ok then

bingoohuang / 0_reuse_code.js

Created June 15, 2014 23:51

Here are some things you can do with Gists in GistBox.

	// Use Gists to store code you would like to remember later on
	console.log(window); // log the "window" object to the console

bingoohuang / TryLoadImages.js

Last active August 29, 2015 14:04

Try load images by sequence until 404 found

	<html>
	<body>
	</body>
	<script>

	(function tryLoadImages(index) {
	var img = document.createElement('img');
	img.src = "http://127.0.0.1:7001/" + index + ".jpg";
	img.onload = function() {
	document.body.appendChild(img);

bingoohuang / SeckillingMeasure.java

Last active February 19, 2016 08:25

seckilling implementation using java springmvc

	import org.apache.commons.httpclient.HttpClient;
	import org.apache.commons.httpclient.MultiThreadedHttpConnectionManager;
	import org.apache.commons.httpclient.methods.GetMethod;
	import org.apache.commons.httpclient.params.HttpClientParams;
	import org.apache.commons.httpclient.params.HttpConnectionManagerParams;
	import org.openjdk.jmh.annotations.Benchmark;
	import org.openjdk.jmh.runner.Runner;
	import org.openjdk.jmh.runner.RunnerException;
	import org.openjdk.jmh.runner.options.Options;
	import org.openjdk.jmh.runner.options.OptionsBuilder;

bingoohuang / dfawk

Created July 16, 2015 11:14

convert df output with awk

	[root@iZ25p1jt074Z ~]# df -m\|awk 'NR==1{for(i=1;i<=NF;i++){ix[i]=$i}} (NR>1){for(i=1;i<=NF-1;i++){printf "%s:%s,",ix[i],$i} printf "%s:%s\n",ix[NF],$NF}'
	Filesystem:/dev/xvda1,1M-blocks:20158,Used:12464,Available:6671,Use%:66%,Mounted:/
	Filesystem:tmpfs,1M-blocks:4096,Used:0,Available:4096,Use%:0%,Mounted:/dev/shm
	Filesystem:/dev/xvdb1,1M-blocks:201581,Used:9433,Available:181909,Use%:5%,Mounted:/mnt
	[root@iZ25p1jt074Z ~]#

bingoohuang / range-buggy.go

Created June 27, 2018 12:03

	package main

	import (
	"fmt"
	"sync"
	)

	// more to see https://github.com/golang/go/wiki/CommonMistakes
	func main() {
	m := []string{"a", "b", "c", "d"}

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