StrikeW

{
    "before": null,
    "after":
    {
        "O_ORDERKEY": 2,
        "O_CUSTKEY": 78002,
        "O_ORDERSTATUS": "O",
        "O_TOTALPRICE": "46929.18",
        "O_ORDERDATE": "1996-12-01",
        "O_ORDERPRIORITY": "1-URGENT",

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version: '3'
services:
  zookeeper:
    image: confluentinc/cp-zookeeper:7.2.1
    container_name: zookeeper
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
  kafka1:
    image: confluentinc/cp-kafka:7.2.1
    container_name: kafka1

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{
    "schema": {
        "type": "struct",
        "fields": [
            {
                "type": "struct",
                "fields": [
                    {
                        "type": "int32",
                        "optional": true,

StrikeW

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

StrikeW

Latency Comparison Numbers
--------------------------
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

StrikeW

// Linux获取当前时区的时间
#include <iostream>
#include <unistd.h>
#include <stdio.h>
#include <time.h>



int main(int argc, char *argv[])
{

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// 2017.2.17
#include <iostream>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>

struct yfs_dir_entry {
        uint32_t inode;			/* Inode number */
	uint16_t rec_len;		/* Directory entry length */

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#!/bin/sh

##
# Install autoconf, automake and libtool smoothly on Mac OS X.
# Newer versions of these libraries are available and may work better on OS X
#
# This script is originally from http://jsdelfino.blogspot.com.au/2012/08/autoconf-and-automake-on-mac-os-x.html
#

export build=~/devtools # or wherever you'd like to build

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#!/bin/bash
#
# backup - Tiny script used to backup folders. This
# is an exercise for learning shell programming.
#


#
# Join elements in array
#

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#!/usr/bin/perl -w
#
# search - Search a file for text. Like grep, but prints a window.
#          Perl, Unix/Linux/Windows...
#
# 23-Jan-2006, ver 1.20
#
# USAGE:    search [-hinBI][-s num] pattern [files ...]
#
#           -h          # usage help