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Commit dcc8930

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‎data/2019-06-17.json‎

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{
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"watchNum": "54918",
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"blogs": [
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{
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"id": "1190000019500623",
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"title": "DevOps 基于Walle的小型持续集成实战(五)基于Walle发布Java应用",
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"url": "/a/1190000019500623",
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"desc": "本章用于讲解如何在walle下构建和运行JavaWeb。主要包含SpringBoot,ScalaAkkaWeb应用,以Java -jar和Docker运行两种方式(Tomcat方式不讲,大家自行研究)",
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"author": {
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"nick": "思绪回忆",
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"homepage": "/u/sixuhuiyi"
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}
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},
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{
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"id": "1190000019500443",
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"title": "Android优化总结",
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"url": "/a/1190000019500443",
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"desc": "目录介绍 1.OOM和崩溃优化 1.1 OOM优化 1.2 ANR优化 1.3 Crash优化 2.内存泄漏优化 2.0 动画资源未释放 2.1 错误使用单利 2.2 错误使用静态变量 2.3 handler内存泄漏 2.4 线程造成内存泄漏 2.5 非静态内部类 2.6 ...",
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"author": {
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"nick": "潇湘剑雨",
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"homepage": "/u/xiangjianyu"
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}
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},
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{
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"id": "1190000019498458",
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"title": "那些年,我们追过的"定时调度"",
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"url": "/a/1190000019498458",
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"desc": "定时调度作为后端开发人员,我们总会遇到这样的业务场景:每周同步一批数据;每半个小时检查一遍服务器运行状况;每天早上八点给用户发送一份包含今日待办事项的邮件,等等。",
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"author": {
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"nick": "MadPecker",
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"homepage": "/u/madpecker"
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}
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},
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{
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"id": "1190000019497724",
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"title": "想让自己的项目6666,可是 Chrome 不答应!",
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"url": "/a/1190000019497724",
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"desc": "读万卷书,行万里路!有的技能可以从书里学会,有的技能却需要在实战中打怪升级慢慢掌握,今天就来和大家聊一个很多小伙伴经常遇到的问题。",
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"author": {
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"nick": "江南一点雨",
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"homepage": "/u/lenve"
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}
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},
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{
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"id": "1190000019497395",
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"title": "ConcurrentHashMap探究",
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"url": "/a/1190000019497395",
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"desc": "ConcurrentHashMap是线程安全,性能出色的Map的线程安全实现,相比较HashMap他是线程安全的,相比较HashTable他的性能优势非常明显。他的使用很简单,这里主要是想要探究一下ConcurrentHashMap的实现原理。在这里...",
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"author": {
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"nick": "建飞",
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"homepage": "/u/jianfei_pang"
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}
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},
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{
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"id": "1190000019496493",
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"title": "拯救你丢失的精度——BigInteger和BigDecimal类(入门)",
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"url": "/a/1190000019496493",
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"desc": "由于在运算的时候,float类型和double很容易丢失精度(下例为演示),所以为了能精确的表示、计算浮点数,Java提供了BigDecimal",
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"author": {
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"nick": "BWH_Steven",
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"homepage": "/u/bwh_steven"
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}
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},
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{
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"id": "1190000019495272",
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"title": "java语法和python语法的区别",
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"url": "/a/1190000019495272",
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"desc": "基础 字符串和列表 元组 集合 条件控制 循环 方法和模块 总结 python语法由于没有类型限制和符号限制,比java语法更加简洁。但是作为一个java程序员,如果要习惯这种无类型,无符号的编程需要时间。",
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"author": {
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"nick": "木木甫",
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"homepage": "/u/mumufu"
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}
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},
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{
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"id": "1190000019495164",
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"title": "HashMap实现原理",
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"url": "/a/1190000019495164",
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"desc": "hashMap是通过数组存储所有的数据,每个元素所存放数组的下标,是根据该存储元素的key的Hash值与该数组的长度减去1做与运算,如下所示:index = (length_of_array - 1) & hash_of_the_key;数组中存放元素的数...",
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"author": {
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"nick": "无厘头",
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"homepage": "/u/wulitou"
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}
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},
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{
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"id": "1190000019494919",
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"title": "解决\"并发下查询并更新带来的问题\"",
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"url": "/a/1190000019494919",
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"desc": "在日常开发中经常遇到先根据条件判断某条数据是否存在,如果不存在的话就插入,如果存在的话就更新或提示异常。一般代码的模式都写成下面这个样子,是一种很常见的写法,但是在并发情况下很容易会重复插入两条数...",
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"author": {
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"nick": "Half",
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"homepage": "/u/half_5ab2635cc04bc"
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}
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},
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{
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"id": "1190000019494432",
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"title": "Java Monitor(管程)",
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"url": "/a/1190000019494432",
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"desc": "操作系统在面对线程间同步的时候,会支持例如semaphore信号量和mutex互斥量等同步原语,而monitor是在编程语言中被实现的,下面介绍一下java中monitor的实现原理:",
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"author": {
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"nick": "leon",
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"homepage": "/u/leon_5cdd85db2cdb3"
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}
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},
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{
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"id": "1190000019494421",
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"title": "听过了API咱们来看看SPI是什么",
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"url": "/a/1190000019494421",
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"desc": "平时API倒是听得很多?SPI又是啥.别急我们来先看看面向接口编程的调用关系,来了解一下,API和SPI的相似和不同之处。",
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"author": {
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"nick": "我想问问天",
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"homepage": "/u/wxwwt"
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}
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},
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{
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"id": "1190000019494006",
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"title": "Java并发核心浅谈(二)",
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"url": "/a/1190000019494006",
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"desc": "Lock主要是自定义一个 counter,从而利用CAS对其实现原子操作,而synchronized是c++ hotspot实现的 monitor(具体的咱也没看,咱就不说)",
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"author": {
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"nick": "平湖",
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"homepage": "/u/eahau"
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}
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},
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{
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"id": "1190000019493420",
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"title": "面试官让你说说==和equals()的区别,重写equals必须重写hashcode方法吗",
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"url": "/a/1190000019493420",
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"desc": "适用对象 ==:主要用于基本类型之间的比较(char、Boolean、byte、short、int、long、float、dobule),也可以用于比较对象",
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"author": {
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"nick": "flyingcr",
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"homepage": "/u/chenrong_flying"
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}
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},
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{
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"id": "1190000019492790",
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"title": "1090-受标签影响的最大值",
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"url": "/a/1190000019492790",
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"desc": "我们有一个项的集合,其中第 i 项的值为 values[i],标签为 labels[i]。 我们从这些项中选出一个子集 S,这样一来: |S| <= num_wanted 对于任意的标签 L,子集 S 中标签为 L 的项的数目总满足 <= use_limi...",
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"author": {
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"nick": "Null",
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"homepage": "/u/null_ryan"
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}
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},
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{
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"id": "1190000019492673",
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"title": "1089-复写零",
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"url": "/a/1190000019492673",
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"desc": "给你一个长度固定的整数数组 arr,请你将该数组中出现的每个零都复写一遍,并将其余的元素向右平移。 注意:请不要在超过该数组长度的位置写入元素。 要求:请对输入的数组 就地 进行上述修改,不要从函数返回任...",
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"author": {
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"nick": "Null",
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"homepage": "/u/null_ryan"
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}
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}
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]
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}

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