面试题-并发第8页

接口性能优化的11个小技巧

这里加锁的目的是为了防止并发的情况下，创建了相同的目录，第二次会创建失败，影响业务功能。但这种直接在方法上加锁，锁的粒度有点粗。因为doSave方法中的上传文件和发消息方法，是不需要加锁的。

2401_83916241·2024-09-07 14:54

python爬虫面试真题及答案_Python面试题爬虫篇(附答案)

0|1第一部分必答题注意：第31题1分，其他题均每题3分。1，了解哪些基于爬虫相关的模块？-网络请求：urllib，requests，aiohttp-数据解析：re，xpath，bs4，pyquery-selenium-js逆向：pyexcJs2，常见的数据解析方式？-re、lxml、bs43，列举在爬虫过程中遇到的哪些比较难的反爬机制？-动态加载的数据-动态变化的请求参数-js加密-代理-coo

朴少·2024-09-07 13:19

新版视频通话照妖镜：多个模板内置

新版视频通话照妖镜源码：内置多个模板，方便拍照并发送至指定邮箱新版视频通话照妖镜源码内置了多个模板，可供选择。通过该源码，对方打开即可进行视频通话，并且能够方便地拍照并将照片发送至指定的邮箱。

生活家小毛·2024-09-07 11:41

efk8.0.1部署

修改文件限制vi/etc/security/limits.conf*softnofile65536*hardnofile65536*softnproc4096*hardnproc40961.2调整虚拟内存最大并发连接

glnullops·2024-09-07 11:40

高级java每日一道面试题-2024年9月01日-基础篇-事务的四个特性（ACID）分别是什么？

如果有遗漏,评论区告诉我进行补充面试官:事务的四个特性（ACID）分别是什么？我回答:事务的四个特性（ACID）是经常被提及的重要概念，特别是在处理数据库操作时。ACID代表原子性（Atomicity）、一致性（Consistency）、隔离性（Isolation）和持久性（Durability），这四个特性共同保证了数据库事务的可靠性和完整性。1.原子性（Atomicity）定义：原子性是指事务

java我跟你拼了·2024-09-07 11:37

20道大厂真实面试题，答出一半以上的都是高手

这些面试题分享出来，大家看看自己能答出多少吧~大厂面试真题1、京东：Spring的循环依赖问题如何解决

架构文摘JGWZ·2024-09-07 10:33

微服务高频热点面试题汇总

1.SpringBoot面试题1.1.简单聊聊SpringBoot的作用是什么?

骨灰级收藏家·2024-09-07 10:30

2024金九银十208道Java中高级高频面试题（含答案）

12.什么是集合?集合和数组的区别。13.常用的集合类有哪些？它们的区别是什么？14.集合如何安全地批量删除元素?15.java怎么实现动态代理?有什么意义?16.什么是死锁?死锁产生的原因是什么?如何避免死锁？17.synchronized的作用。18.volatile关键字的作用19.线程怎么保持同步？20.什么是CAS?21.乐观锁与悲观锁?乐观锁的实现方式？22.Lock与synchron

2401_85125308·2024-09-07 10:59

高性能web服务器-nginx（一）

由IgorSysoev于2004年首次发布，其设计目标是解决C10K问题，即在一台服务器上同时处理一万个并发连接。

calm–1·2024-09-07 10:28

第二十六周周总结（6.26--7.02）

好好学习4.参加了积微闪亮星期天，周英的主持很热情，曹曹、自然、球球的分享让我很瘦触动，我定下目标：参加第二期减重营瘦10斤并发挥合伙人效应，分享带动3个周边的朋友一起加入减脂。

守护诺言2021·2024-09-07 08:49

python压力测试_Python 压力测试脚本

目的是写个脚本，起多线程去call一个接口,来测试一个并发问题。实现方案是将接口做到了一个页面中，用python的httpget请求来访问查询。

weixin_39561673·2024-09-07 07:12

Python. 协程asyncio、gevent

1、协程是一种轻量级的并发机制，允许你在单个线程内模拟并发执行多个任务。协程非常适合用于I/O密集型任务，如网络请求、文件读写等，在等待I/O操作完成时，协程可以继续执行其他任务而不是阻塞。

u010373106·2024-09-07 07:11

2、掌握Go语言变量声明与初始化：编程基石，迈向并发之路

Go语言开发：变量声明与初始化Go语言，以其简洁、高效和并发性强而广受好评。在Go语言中，变量的声明与初始化是编程的基础，也是确保程序可靠性的关键。

多多的编程笔记·2024-09-07 07:09

函数式编程-Stream流

1.2.2优点代码简洁接近自然语言，易于理解易于"并发编程"2.Lambda表达式2.1概述Lambda是Jdk8中的一个语法糖。它可以对某些匿名内部类的写法

码农OvO·2024-09-07 06:02

海南自由贸易港建设之我见 - 草稿

2020年6月1日，中共中央、国务院印发了《海南自由贸易港建设总体方案》，并发出通知，要求各地区各部门结合实际认真贯彻落实。

孤心雁行·2024-09-07 06:42

大厂高频面试题复习JAVA学习笔记-学习路线

对于应届生，要找到一份java工作，你得大概学会：java基础：javase、jvm、juc、gc、mysql、jdbc，计网计组Java微服务基础Maven→Gradle→Spring6→SpringMVC→MyBatis→MyBatisPlus→SSM->Redis7->SpringBoot2->SpringCloudjava微服务生态:Git-Docker-Elasticsearch→Zoo

addaduvyhup·2024-09-07 06:58

【jQuery】前端八股文面试题

jQuery这个问的没有那么多，暂时我被问到的就这几个。大家可以直接订阅专栏。文章目录jQuery1.jQuery常见的方法有哪几个？2.在jQuery中，常见使用委托的事件有哪些？1）点击事件（click）2）鼠标悬停事件（mouseenter和mouseleave）3）表单提交事件（submit）4）输入框变化事件（change）3.在jQuery中，常见的鼠标事件方法有哪些？1）click（

菜鸟una·2024-09-07 06:58

分布式发号器（2）

目录数据结构最大峰值型最小粒度值型并发机器ID的分配时间同步设计验证性能需求调整时间是否会影响ID产生功能？每4年一次同步润秒会不会影响ID产生功能？

lmkbuffon·2024-09-07 03:39

SpringBoot高并发！java分布式开发面试题

梳理知识后，夯实基础乃是刚需：深入进阶学习（28个主流Java知识点“一网打尽”）1、并发编程Java并发编程是整个Java开发体系中最难以理解，但也是最重要的知识点之一，一旦掌握你一定在市场上供不应求

spring面试题·2024-09-07 02:38

Java面试题

Java面试题文章目录1、抽象类和接口的区别2、重载和重写的区别3、==和equals的区别4、讲一讲什么是map、set、list5、HashMap原理6、什么是JSP？

路飞Fly了·2024-09-07 02:08

html如何嵌套页面？标签告诉你答案</h4> </div> <div class="article-excerpt"> web前端全栈资料粉丝福利（<em>面试题</em>、视频、资料笔记、进阶路线）在这里小编首先介绍的是HTML中iframe标签的用法：怎么在一个网页中嵌入另一个网页呢，我们可以用html中的iframe标签搞定 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> PHP9年架构师<span class="dot">·</span>2024-09-07 02:06 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="newsitem-info clearfix"> <a href="/article/1832109260964720640.htm" ></a> <a target="_blank" href="/article/1832109260964720640.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0">如何保证Redis与Mysql双写一致性？</h4> </div> <div class="article-excerpt"> 延迟双删对于上面链接的文章，里面的延迟双删没有给出具体的例子，也没有直接指出具体解决的问题是针对那种缓存策略，这里补充一下，延时双删缓存针对的是Cacheasidepattern(缓存旁路策略)，处理的是在高<em>并发</em>读写同时存在的情况下可能会出现的问题 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> 云逸_<span class="dot">·</span>2024-09-07 01:01 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/redis/1.htm"> redis </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E6%95%B0%E6%8D%AE%E5%BA%93/1.htm"> 数据库 </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E7%BC%93%E5%AD%98/1.htm"> 缓存 </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832066665878220800.htm" ></a> <a target="_blank" href="/article/1832066665878220800.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0">MongoDB的WiredTiger存储引擎</h4> </div> <div class="article-excerpt"> 作者：太阳从MongoDB3.2开始，MongoDB实例默认的存储引擎为WiredTiger，WiredTiger存储引擎具体以下几大优点：文档级<em>并发</em>将数据持久化到磁盘快照和checkpoint数据压缩本地数据加密一 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> 云掣YUNCHE<span class="dot">·</span>2024-09-06 22:46 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/mongodb/1.htm"> mongodb </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E6%95%B0%E6%8D%AE%E5%BA%93/1.htm"> 数据库 </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832054054776303616.htm" class='news-img' style="background-image:url('http://img.e-com-net.com/image/info8/c6fc89415b2a4f1ba2a796148619e038.jpg@!80x60')" ></a> <a target="_blank" href="/article/1832054054776303616.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0">【图书介绍】《Rust编程与项目实战》</h4> </div> <div class="article-excerpt"> 内容简介Rust是一门系统编程语言，专注于安全，尤其是<em>并发</em>安全，它也是支持函数式、命令式以及泛型等编程范式的多范式语言。 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> 夏天又到了<span class="dot">·</span>2024-09-06 21:39 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F%E4%B8%8E%E7%BC%96%E7%A8%8B%E8%AF%AD%E8%A8%80/1.htm"> 操作系统与编程语言 </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/rust/1.htm"> rust </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E5%BC%80%E5%8F%91%E8%AF%AD%E8%A8%80/1.htm"> 开发语言 </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E5%90%8E%E7%AB%AF/1.htm"> 后端 </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832020144344363008.htm" ></a> <a target="_blank" href="/article/1832020144344363008.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0">大数据秋招面经之spark系列</h4> </div> <div class="article-excerpt"> 文章目录前言spark高频<em>面试题</em>汇总1.spark介绍2.spark分组取TopN方案总结：方案2是最佳方案。 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> wq17629260466<span class="dot">·</span>2024-09-06 19:54 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/%E5%A4%A7%E6%95%B0%E6%8D%AE/1.htm"> 大数据 </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/spark/1.htm"> spark </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832018102569758720.htm" ></a> <a target="_blank" href="/article/1832018102569758720.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0">乘风破浪的新手妈妈D50</h4> </div> <div class="article-excerpt"> 通过这样做，孩子可以懂得什么是责任感，<em>并发</em>展出对合理应对问题必备的品质。 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> 蒲公英_2018<span class="dot">·</span>2024-09-06 19:48 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832014087362539520.htm" class='news-img' style="background-image:url('http://img.e-com-net.com/image/info8/d0104b6da00641e89b86719e8fc3fb33.jpg@!80x60')" ></a> <a target="_blank" href="/article/1832014087362539520.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0">Java 中的<em>并发</em>工具类详解：Semaphore、CountDownLatch 和 CyclicBarrier</h4> </div> <div class="article-excerpt"> 目录1、信号量：Semaphore2、线程同步：CountDownLatch和CyclicBarrierJava<em>并发</em>包提供了哪些<em>并发</em>工具类？ </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> swadian2008<span class="dot">·</span>2024-09-06 19:50 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/%E5%B9%B6%E5%8F%91%E7%BC%96%E7%A8%8B/1.htm"> 并发编程 </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/Semaphore/1.htm"> Semaphore </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/CountDownLatch/1.htm"> CountDownLatch </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/CyclicBarrier/1.htm"> CyclicBarrier </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/Java/1.htm"> Java </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E5%B9%B6%E5%8F%91%E5%B7%A5%E5%85%B7%E7%B1%BB/1.htm"> 并发工具类 </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832001100102856704.htm" ></a> <a target="_blank" href="/article/1832001100102856704.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0">Java多线程同步工具类：Semaphore原理剖析</h4> </div> <div class="article-excerpt"> AbstractQueuedSynchronizer队列同步器[Java多线程之：队列同步器AbstractQueuedSynchronizer原理剖析]Semaphore原理Semaphore也就是信号量，提供了资源数量的<em>并发</em>访问控制 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> JermeryBesian<span class="dot">·</span>2024-09-06 18:14 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/Java/1.htm"> Java </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/java/1.htm"> java </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/jvm/1.htm"> jvm </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E9%9D%A2%E8%AF%95/1.htm"> 面试 </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E5%A4%9A%E7%BA%BF%E7%A8%8B/1.htm"> 多线程 </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1831984453136773120.htm" class='news-img' style="background-image:url('http://img.e-com-net.com/image/info8/55c822b7b42946daa490caed8e7c7d51.jpg@!80x60')" ></a> <a target="_blank" href="/article/1831984453136773120.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0">Java<em>并发</em>编程(五)—ReetrantLock详解及应用</h4> </div> <div class="article-excerpt"> 、性能优化二、ReentrantLock和Synchronized的区别1、语法和使用方式2、锁的获取和释放3、高级特性4、条件变量5、性能总结三、ReentrantLock使用场景之前的文章Java<em>并发</em>编程 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> 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