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入门kafka,10天拿到字节跳动Java岗位offer

echo “3” /usr/local/zookeeper/zookeeper 3.4.10/data/myid 登录后复制 / / / 启动服务并测试 配置完成,为每个 zk 服务启动并测试,我在 windows 电脑的测试结果如下 启动服务(每台都需要执行) 1. 2. 3. 4. 5. 6. ...

2021-08-06 11:20 程序员妹控

网上各种短网址算法应用的初步详细汇总

看过新浪的短连接服务,发现后面主要有6个字符串组成,于是第一个想到的就是原来公司写的一个游戏激活码规则,也就是下面的算法2,26个大写字母 26小写字母,10个数字,随机生成6个然后插入数据库对应一个id,短连接跳转的时候,根据字符串查询到对应id,即可实现相应的跳转!不过2的62次方,不知道有没有...

2021-08-06 11:20 y0umer1
【DB笔试面试623】在Oracle中,给出下面语句的可能的优化思路。

【DB笔试面试623】在Oracle中,给出下面语句的可能的优化思路。

  * 题目 部分 在Oracle中,给出下面语句的可能的优化思路。 登录后复制 1CREATE TABLE T_YH_20170705_LHR( X INT);2BEGIN3 FOR I IN 1 .. 100000 LOOP4 EXECUTE IMMEDIATE 'INSERT INTO T_Y...

2021-08-06 11:20 小麦苗DB宝
大数据开发技术HBase优化与特点分析

大数据开发技术HBase优化与特点分析

高可用 在HBase中Hmaster负责监控RegionServer的生命周期,均衡RegionServer的负载,如果Hmaster挂掉了,那么整个HBase集群将陷入不健康的状态,并且此时的工作状态并不会维持太久。所以HBase支持对Hmaster的高可用配置。 关闭HBase集群(如果没有开启...

2021-08-06 11:20 IT小尚

在Windows Server2008R2中导入Excel不能使用Jet 4.0的解决方法

一直使用以下代码从Excel中取数据,速度快方便: string strConn = 'Provider=Microsoft.Jet.OLEDB.4.0;' + 'Data Source=' + strFileName + ';' + 'Extended Properties=Excel 8.0;'...

2021-08-06 11:20 y0umer1
假如35岁时被裁员,从现在开始你该怎么做,最新Java面试题及答案

假如35岁时被裁员,从现在开始你该怎么做,最新Java面试题及答案

“技术水平差”,说明他们并没有扎实的本领傍身; “面试一轮游”,说明其他企业已经看不上他们了。 不由想起一句老生常谈的话:时代抛弃你,从来不会说再见。 确切地说,抛弃你的并不是这个时代,而是安于现状、不求上进的你自己。 ()1.没有战略眼光的人 那些没有长远眼光的人,就是在混吃等死,他们只求过得开心...

2021-08-06 11:20 程序员妹控
【DB笔试面试624】在Oracle中,Hash Join是不是有排序?Hash Join会在什么时候慢?

【DB笔试面试624】在Oracle中,Hash Join是不是有排序?Hash Join会在什么时候慢?

  * 题目 部分 在Oracle中,Hash Join是不是有排序?Hash Join会在什么时候慢?       * 答案部分   哈希连接(Hash Join,HJ)自身不需要排序,这是区别排序合并连接(Sort Merge Join,SMJ)的特点之一。Hash Join原理比较复杂,但是如...

2021-08-06 11:20 小麦苗DB宝
【DB笔试面试628】Oracle的统计信息包括哪几种类型?

【DB笔试面试628】Oracle的统计信息包括哪几种类型?

  * 题目 部分 Oracle的统计信息包括哪几种类型?       * 答案部分     Oracle数据库里的统计信息是一组存储在数据字典里,且从多个维度描述了数据库里对象的详细信息的一组数据。当Oracle数据库工作在CBO(Cost Based Optimization,基于代价的优化器)...

2021-08-06 11:20 小麦苗DB宝

Get started Kafka and get an offer in 10 days

echo “3” /usr/local/zookeeper/zookeeper 3.4.10/data/myid Log in and copy / / / Start the service and test Configuration complete , For each zk ...

2021-08-06 11:20 Programmer sister control
[monthly report] February summary of Java bosom friends

[monthly report] February summary of Java bosom friends

  Java Popular framework technology points Read with your hands Mybatis Source code ( One ) Structure (http://mp.weixin.qq.com/s?__biz=MzI4Njc5NjM1...

2021-08-06 11:20 Java confidant

Preliminary and detailed summary of the application of various short website algorithms on the Internet

I've seen Sina's short connection service , It is found that there are mainly 6 It's a string , So the first thought was a game activation code rule ...

2021-08-06 11:22 y0umer1
[DB written interview 623] in Oracle, give the possible optimization ideas of the following statements.

[DB written interview 623] in Oracle, give the possible optimization ideas of the following statements.

  * subject part stay Oracle in , Give the possible optimization ideas of the following statement . Log in and copy 1CREATE TABLE T_YH_20170705...

2021-08-06 11:22 Wheat seedling DB treasure
HBase optimization and characteristic analysis of big data development technology

HBase optimization and characteristic analysis of big data development technology

High availability stay HBase in Hmaster Responsible for monitoring RegionServer Life cycle of , equilibrium RegionServer The load of , If Hmaster H...

2021-08-06 11:23 It Xiaoshang

The solution that jet 4.0 cannot be used to import excel in Windows server2008r2

Always use the following code from Excel Take data from , Fast and convenient : string strConn = 'Provider=Microsoft.Jet.OLEDB.4.0;' + 'Data Source='...

2021-08-06 11:23 y0umer1
If you were laid off at the age of 35, what should you do from now on

If you were laid off at the age of 35, what should you do from now on

“ The technical level is poor ”, It shows that they don't have solid skills ; “ Interview round ”, It shows that other enterprises have already looked...

2021-08-06 11:23 Programmer sister control
[DB written interview 624] in Oracle, is hash join sorted? When will hash join slow down?

[DB written interview 624] in Oracle, is hash join sorted? When will hash join slow down?

  * subject part stay Oracle in ,Hash Join Is there a sort ?Hash Join When will it slow down ?       * Answer section   Hash join (Hash Join,H...

2021-08-06 11:24 Wheat seedling DB treasure
[DB written interview 628] what types of statistical information does Oracle include?

[DB written interview 628] what types of statistical information does Oracle include?

  * subject part Oracle What are the types of statistical information ?       * Answer section     Oracle Statistics in a database are a set of ...

2021-08-06 11:24 Wheat seedling DB treasure

Alternative options for JSX | update challenge in August

The last article mentioned JSX It's not something mysterious , It exists only to take developers from writing lengthy createElement perhaps h F...

2021-08-06 11:24 ice_ bear

The difference between undefined and null in JS (1)

Every time I encounter this title, my mind is blank , Then take notes on various Baidu books . After a period of time to see similar problems, the br...

2021-08-06 11:25 Whiter than a little white rabbit
分享一个vue 的 3d picker组件

分享一个vue 的 3d picker组件

分享一个基于vue3 的 3d picker组件代码 GitHub (https://link.segmentfault.com/?url=https%3A%2F%2Fgithub.com%2FNinshar%2Fvue 3d pciker%2Ftree%2Fmaster) 地址 ! (/img/b...

2021-08-06 11:25 H青天

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