【技术头条10/22/AM 3点闪读】代理模式之JDK动态代理 — …|Django框架篇-8.模型层…|

  1. 代理模式之JDK动态代理 — “JDK Dynamic Proxy“

    动态代理的原理是什么? 所谓的动态代理,他是一个代理机制,代理机制可以看作是对调用目标的一个包装,这样我们对目标代码的调用不是直接发生的,而是通过代理完成,通过代理可以有效的让调…

  2. Django框架篇-8.模型层2

    多表操作 创建模型 实例:我们来假定下面这些概念,字段和关系 作者模型:一个作者有姓名和年龄。 作者详细模型:把作者的详情放到详情表,包含生日,手机号,家庭住址等信息。作者详情模型和作者模型之间是一对一的关系(one-to-one) 出版商模型:出版商有名称,所在城市以及email。 书籍模型: 书 …

【技术头条10/22/AM 2点闪读】Head First设计模式—…|Windows系统调用中的系统…|学习记录(day05-标签操作…|

  1. Head First设计模式——观察者模式

    1、气象监测应用,错误示范 有一个气象站,分别有三个装置:温度感应装置,湿度感应装置,气压感应装置。WeathData对象跟踪气象站数据,WeathData有MeasurmentsChanged()方法,当感应装置数据变化后就会调用MeasurmentsChanged。目前需求是要三个布告板,分别是 …

  2. Windows系统调用中的系统服务表描述符

    Windows内核分析索引目录:https://www.cnblogs.com/onetrainee/p/11675224.html Windows系统调用中的系统服务表描述符 在前面,我们将解过 系统服务表。可是,我们有个疑问,系统服务表存储在哪里呢? 答案就是:系统服务表 存储在 系统服务描述符 …

  3. 学习记录(day05-标签操作、属性绑定、语句控制、数据绑定、事件绑定、案例用户登录)

    [TOC] 1.1.1标签操作v-text&v-html v-text:会把data中绑定的数据值原样输出。 v-html:会把data中值输出,且会自动解析html代码 <!–可以将指定的内容显示到标签体中–> <标签 v-text=””></…

【技术头条10/22/AM 1点闪读】Flask源码分析一:服务启动|powershell 基础|VMware vSphere的…|

  1. Flask源码分析一:服务启动

    前言 Flask是目前为止我最喜欢的一个Python Web框架了,为了更好的掌握其内部实现机制,这两天准备学习下Flask的源码,将由浅入深跟大家分享下,其中Flask版本为1.1.1。 Flask系列文章: 1. “Flask开发初探” 正文 本文将结合源码跟踪看下Flask是如何启动并运行一个 …

  2. powershell 基础

    Windows powershell是一种命令行外壳程序和脚本环境,它内置在win7以上版本的操作系统中,使命令行用户和脚本编写者可以利用.NET Framework的强大功能。powershell程序可以直接在内存中运行,可以作为命令提示符cmd.exe的扩充。 查看powershell版本信息 …

  3. VMware vSphere的两种RDM磁盘

    在VMware vSphere vCenter中创建虚拟机时,可以添加一种叫RDM的磁盘。 RDM - Raw Device Mapping,原始设备映射,那么,RDM磁盘是不是就可以称作为“原始设备映射磁盘”呢?这也是一种可以热…

【技术头条10/22/AM 12点闪读】从零开始实现ASP.NET C…|.NET Core使用App….|

  1. 从零开始实现ASP.NET Core MVC的插件式开发(六) – 如何加载插件引用

    在前一篇中,我给大家演示了如何使用.NET Core 3.0中新引入的`AssemblyLoadContext`来实现运行时升级和删除插件。完成此篇之后,我的得到了很多园友的反馈,很高兴有这么多人能够参与进来,我会根据大家的反馈,来完善这个项目。本篇呢,我将主要解决加载插件引用的问题,这个也是反馈中… …

  2. .NET Core使用App.Metrics监控消息队列(一):初探

    一、简介 App Metrics是一个开放源代码和跨平台的.NET库,用于记录应用程序中的指标。App Metrics可以在.NET Core或也支持.NET 4.5.2的完整.NET框架上运行。 App Metrics通过在内存中进行采样和聚合,并提供可扩展性点以指定间隔将指标刷新到存储库中,从而 …

【技术头条10/21/Night】evilsocket / …|.NET Core开发的iNe…|Spring Boot Web…|MongoDB系列-在复制集(…|Spring Cloud Sl…|

  1. evilsocket / pwnagotchi [github热门推荐]

    (⌐■_■) – Deep Reinforcement Learning instrumenting bettercap for WiFi pwning.

  2. .NET Core开发的iNeuOS物联网平台部署树霉派(raspbian),从网关到云端整体解决方案。助力2019中国.NET峰会。

    2019 中国.NET 开发者峰会正式启动 目 录 1. 概述… 2 2. 树莓派硬件配置… 2 3. 软件信息… 3 4. Raspbian下载及安装… 3 5. 准备运行程序包… 4 6. 安装SSH.. 4 7. 安装.netcore. 4 8. 安装mariadb. 5 …

  3. Spring Boot WebFlux 集成 Mongodb 数据源操作

    WebFlux 整合 Mongodb 前言 上一讲用 Map 数据结构内存式存储了数据。这样数据就不会持久化,本文我们用 MongoDB 来实现 WebFlux 对数据源的操作。 什么是 MongoDB ? 官网:https://www.mongodb.com/ MongoDB 是一个基于分布式文件 …

  4. MongoDB系列-在复制集(replication)以及分片(Shard)中创建索引

    关注我,可以获取最新知识、经典面试题以及微服务技术分享   在使用MongoDB时,在创建索引会涉及到在复制集(replication)以及分片(Shard)中创建,为了最大限度地减少构建索引的影响,在副本…

  5. Spring Cloud Sleuth:分布式请求链路跟踪

  6. 聊聊nacos config的publishConfig

  7. 【Medium 万赞好文】ViewModel 和 LIveData:模式 + 反模式

  8. (一)Java 中的引用类型、对象的可达性以及回收处理

  9. https://gitee.com/ 码云咋了?

    https://gitee.com/ 进不去了,涉及违法不良信息,有没有知道咋回事的?…

【科技头条·夜猫专享-10/21】美团推出盲人定制语音点外卖应用…|世界上最长的刀,是双 11 的…|Prince Charles …|Apple AirPods a…|深网 | 天猫回应“二选一”:…|

  1. 美团推出盲人定制语音点外卖应用,不只为「献爱心」

    据美团语音平台的负责人蔡勋梁透露,早在 2017 年美团语音平台成立起,就有工程师提出想为盲人群体开发特定版本 … 美团的一份面向盲人群体的调研报告显示,有 87% 的视力障碍者使用过外卖服务,其中 70% 的受访者表示,用手机点外卖是他们最常用的点外卖方式 … 2017 年,作为语音平台的核心组建成员,蔡勋梁在和公司管理层讨论成立语音平台时,就确立美团语音平台的定位:「让每一个人获得生活服务就像说话一样简单」——用户只需要说出需求,美团就可以准确理解并匹配这些需求。

  2. 世界上最长的刀,是双 11 的剁手刀

    很有可能是所谓的「下沉市场」,为了让小镇青年也拥有和城市年轻人一样的剁手机会,阿里不仅联合微博、知乎、百度、抖音和快手上的 2000 名以上的网红直播「种草」,同时还将在 11 月 10 日晚举办「老铁晚会」,让「老铁」因为阿里的诚意加入双 11 购物节 … 根据天猫数据,20 月 21 日零点开启的双 11 预售上,雅诗兰黛品牌仅仅预售 25 分钟,实现交易额近 5 亿,超过了去年双 11 全天的成交额 … 在第 11 个双 11 到来的时候,已经发展十年的天猫「聊发少年狂」,从形式到内容再到渠道,以比之前更强的力度,将阿里的「剁手刀」送到了更广阔的用户群体中。

  3. Prince Charles grows up in tense ‘The Crown’ Season 3 trailer

    It feels impossible that we Haven’t seen a full trailer for The Crown Season 3 yet, but we Haven’t — and it’s Now finally here, and heavily features an adult Prince Charles (Josh O’Connor) … Olivia Colman’s First turn as Queen Elizabeth brings The story to the 1960s and ’70s, facing Financial crises, security threats, and Civil unrest … The Crown Season 3 also brings in Helena Bonham Carter as Princess Margaret, Tobias Menzies as The Duke of Edinburgh, Josh O’Connor as Prince Charles, Erin Doherty as Princess Anne, Ben Daniels as Lord Snowdon, Jason Watkins as Prime Minister Harold Wilson and Charles Dance as Lord Mountbatten.

  4. Apple AirPods are on sale, Here’s where to Grab The best Deals

    Apple AirPods are incredibly easy to pair with Apple devices, making the popular accessory a great gift idea for new iPhone 11 owners … With 2019 AirPods 2 Model S now on sale at top Apple Authorized Resellers like Amazon, B&H Photo and Best Buy, saving up to $30 is quick and easy … AppleInsider and Apple authorized resellers are also running a handful of additional exclusive savings this month on Apple hardware that will not only deliver the lowest prices on many of the items, but also throw in cash savings on Apple Care and accessories.

  5. 深网 | 天猫回应“二选一”:双11从来都是千选一、万选一

    刘博称所谓“二选一”从来都是一个伪命题,“大家可以观察到,每逢大促节点,翻炒演绎二选一”话题几乎成为标配碰瓷工具 … 刘博引用上周阿里巴巴市场公关委员会主席王帅在社交媒体的发文表示:平台为组织大促活动,必须投入大量资源和成本,也就有充分的理由要求商家品牌在货品、价格等方面具有对等力度,以充分保障消费者利益 … 当被问及是否关注到最新的有关“二选一”话题时,刘博称:正在忙着准备天猫双11爆款清单,没有详细了解相关言论。

  6. 20% off all costumes in the Lovehoney Halloween sale

    There are those WHO want to dress up as a massive pumpkin or a wart-covered witch, and then there are those WHO want to LOOK as sexy as possible … This includes just about anything you can imagine, and whilst some of the outfits might not be appropriate to wear outside the bedroom, most would make excellent Halloween costumes.

  7. the water drop icon on your Apple Watch means that Water Lock is enabled — Here’s how to turn it off

    Water Lock locks your Watch’s screen so that you can swim or shower without turning it on, or tapping anything inadvertently … While the device is water-resistant (not waterproof), its screen is still pretty sensitive, and you Don’t want to accidentally tap it while swimming or showering.

  8. Samsung Q80R QLED TV review — Built for gaming

  9. Netflix’s ‘The Crown’ season 3 trailer shows off the new cast

    We knew that Oscar winner Olivia Colman would be taking over for Claire Foy as Queen Elizabeth II, but Now we have a better idea of what that will LOOK like … the trailer also shows Helena Bonham Carter in her role as Princess Margaret, and we get our First glimpse of Emerald Fennell (Call the Midwife) as Camilla Parker Bowles and Josh O’Connor as Prince Charles.

【技术头条10/21/PM 11点闪读】TensorFlow2.0(7…|直观理解梯度,以及偏导数、方向…|SAP HANA数据库mult…|这可能是最通俗的 React …|Android 基础知识2:四…|

  1. TensorFlow2.0(7):激活函数

    激活函数是深度学习,亦或者说人工神经网络中一个十分重要的组成部分,它可以对神经元的接收信息进行非线性变换,将变换后的信息输出到下一层神经元。 …

  2. 直观理解梯度,以及偏导数、方向导数和法向量等

    [TOC] 博客: “blog.shinelee.me” | “博客园” | “CSDN” 写在前面 梯度是微积分中的基本概念,也是机器学习解优化问题经常使用的数学工具(梯度下降算法),虽然常说常听常见,但其细节、物理意义以及几何解释还是值得深挖一下,这些不清楚,梯度就成了“熟悉的陌生人”,仅仅“记 …

  3. SAP HANA数据库multi container模式JDBC链接connection refused

    报错如下信息 com.sap.db.jdbc.exceptions.JDBCDriverException: SAP DBTech JDBC: Cannot connect to jdbc:sap://xxx.xxx.xxx.xxx:30015 [Cannot connect to host xxx.xxx.xxx.xxx:30015 [C…

  4. 这可能是最通俗的 React Fiber 打开方式

  5. Android 基础知识2:四大组件之 Service

  6. Android 基础知识4:四大组件之 ContentProvider(外共享数据)

  7. 10步成为一个优秀的Java开发!

  8. 如果你还访问不了码云 Gitee ,请更换一下 DNS 服务器

    今天下午码云 Gitee.com 的域名已经恢复解析了,由于 DNS 解析更新存在延迟,每个地方的 DNS 有自己的缓存策略,目前 DNS 已经在大部分恢复了,还有个别地区还没有恢复。 如果你所在的地方还…

  9. Designing Your First App in Kubernetes: A Summary

    I wrote a blog series recently where I walk you through the basics of architecting an application for Kubernetes, with a tactical Focus on the actual Kubernetes objects you’Re going to need … When you build an application with Kubernetes, you’ll want to address any problems with the environment-specific configuration expected by that App … Docker App sets out to solve that problem by packaging applications in an integrated bundle that can be moved around as easily as a single image.

  10. Serverless Is Moving Node.js Forward. Are You In?

    Do you know that the Serverless approach is making a huge influence on the popularity and the principles of Node.js usage … It’s important, however, to recognize that Serverless is just as important to Node.js as it is the other way around … Moving from traditional server bases into the realm of Serverless can be a difficult decision to make — and it shouldn’t be, because it’s the easiest Move you could make.

【科技头条·PM 11点一刻-10/21】后马云时代的阿里迎来第一次大考…|Jail is on the …|How protein bar…|Amex is retooli…|Bronny James th…|

  1. 后马云时代的阿里迎来第一次大考,天猫双十一公布三大核心KPI

    2019年是天猫第十一个双十一,也是马云卸任阿里巴巴集团董事局主席的第一个双十一 … 这三大特点,既是今年天猫双11的核心“kpi”,也是蒋凡对这一年多以来天猫淘宝改造升级的成果总结和检验 … 根据阿里公开数据显示,过去两年,淘宝天猫的月度活跃用户增长2.26亿,年度活跃消费者增长2.08亿,新增用户中超过70%来自下沉市场。

  2. Jail is on the table in ‘Silicon Valley’ Season 6 trailer

    The final season of Silicon Valley is just around the corner and the scrappy gang of Tech entrepreneurs continue to Find themselves in hot water in the First official trailer … As Richard (Thomas Middleditch) continues to push his innovations forward, including his desire to build a better Internet for the people, he is still butting heads with big tech while working alongside his kind-of-trusty-but-not-really cohorts … Gavin Belson is back in action, Richard is throwing up, jail is on the table, and Jian-Yang has a gun.

  3. How protein bars are made

  4. Amex is retooling its rewards for two key Business segments

    To get this story Plus others to your inbox each day, hours before they’Re published on Business Insider, click here … While this is down from the 10% annual growth Amex found in Q3 2018, it matches the 8% annual JUMP it posted in Q2 2019 … Notably, this marks the second straight quarter where Amex’s US billed Business growth increased or remained the same, and since this comes after two straight quarters of decelerating growth — when it dropped from 10% YoY in Q3 2018 to 7% by Q1 2019 — it may mean Amex has avoided a prolonged negative trend.

  5. Bronny James threw down his First in-game dunk for Sierra Canyon with LeBron watching

    James and Zaire Wade, son of Dwyane Wade, are playing together at Sierra Canyon and should make for some unmissable basketball … On Sunday, a video of James throwing down a dunk for the California high school powerhouse made the rounds on social media.

  6. The best jollof rice: Nigerian, Ghanaian or Senegalese?

    We went to Three of New York City’s highest-rated West African restaurants to settle the debate over which country makes The best jollof rice.

  7. Microsoft announces Secured-Core PCs to counter firmware attacks

  8. Kate Beckinsale is convinced she looks ‘exactly’ like Ryan Reynolds

    He said he modeled his haircut for his “Saturday Night Live” audition circa 1997 after a short do Beckinsale had at the time.

  9. 欧盟:微软在欧业务违反《通用数据保护法》

    该机构今年4月展开调查,评估微软与欧盟委员会等欧盟机构之间的业务合同是否完全符合欧盟的数据保护规则 … 该机构在一份声明中表示:尽管调查仍在进行,但初步结果显示出一些问题,我们对于和微软的相关业务合同条款是否符合数据保护规则表示担忧,同时也担心微软使用其产品和软件,充当欧盟机构的信息处理者的角色 … 据国外媒体报道,在调查美国科技公司是否符合《通用数据保护法》规定方面,爱尔兰数据保护委员会最为积极,因为许多美国科技公司的欧洲总部设立在爱尔兰,因此该机构代表欧盟展开了调查。

  10. Do you have what it takes to Win the talent war? (VB Live)

  11. 层次高的人,从不说这3句话:80%的能力问题,都是态度问题

【技术头条10/21/PM 10点闪读】深度长文回顾web基础组件|如何更快理解和运用服务编排?(…|k8s删除Terminatin…|Redis总结|调用链与日志关联的探索式查询|

  1. 深度长文回顾web基础组件

    什么是Serlvet ? 全称 server applet 运行在服务端的小程序: 首先来说,这个servlet是java语言编写的出来的应用程序,换句话说servlet拥有java语言全部的优点,比如跨越平台,一次编译到处运行 其次: 相对于CGI(common gateway interface …

  2. 如何更快理解和运用服务编排?(使用Goku API Gateway实现)

    上一篇博客 未来实现API管理系统的几个关键词 发布后,有不少读者私信我,让我写一篇实际运用的文章,我周末趁着有空写了这篇有关“服务编排”的文章。用的是Goku API Gateway进行演示, 希望本文对读者有所启发。 什么是服务编排/数据聚合? 服务编排/数据聚合 指的是可以通过一个请求来依次调 …

  3. k8s删除Terminating状态的命名空间

    背景: 我们都知道在k8s中namespace有两种常见的状态,即Active和Terminating状态,其中后者一般会比较少见,只有当对应的命名空间下还存在运行的资源,但是该命名空间被删除时才会出现所谓的…

  4. Redis总结

  5. 调用链与日志关联的探索式查询

  6. 创建适合自己的骨架包

  7. 数据结构之二叉树——二叉查找树

  8. 有没有大佬知道 51 信用卡咋了?

  9. Understanding the Significance of Cloud Culture

    Such is the penetration of the cloud model across all businesses that cloud service integration goes far Beyond the remit of an IT department and requires board-level leadership … Getting cloud culture right means thinking about your employees, your IT security, and your customers — particularly how each may React or change with your Move into the cloud … Having a strong cloud culture will also enable businesses to make a much more informed decision about which kind of cloud infrastructure to adopt.

  10. How to Migrate a Project From ASP.Net MVC to ASP.NET Core

    The step-by-step instructions written by the team working on the nopCommerce open-source Project, and they can be easily applied to any ASP.Net MVC Project … Before proceeding to the steps on porting from ASP.Net MVC to ASP.NET Core, let’s take the quick overview of the framework’s advantages … We planned to migrate to a new framework as soon as its First stable version was released but were not able to make it right away, as there were some critical features that had not been transferred to .NET Core, in particular, those related to EntityFramework.

  11. Defaultable Parameters in Ballerina

    Of course, you should know what to pass, but there are occasions that you care about only a couple of parameters and the rest of the parameters you just Don’t know what to do with … Basically, the function developer can provide the default value for the parameter so that the One WHO uses the function and invokes it can opt-out from providing a value for that parameter … As you may know, Ballerina works in a non-blocking manner, which is an internal thing, but in effect, it means Ballerina won’t block Threads unnecessarily.