When we talk about data quality, what are we talking about?
Data quality check dimension introduces an evaluation rule dimension, which provides a way to measure and manage information and data. Distinguishing ...
2020-11-08 23:46【Station】
阅读更多Programmers should know the URI, a comprehensive understanding of the article
Uri is a concept that every programmer should understand. At the same time, there are also concept clusters such as URL and urn. Understanding these c...
2020-11-08 23:46【Tal technology team】
阅读更多Get the first cover image of video through canvas
let video = document.createElement('video'); video.style='width:0;height:0;position:fixed;right:-100%;' video.muted = 'muted'; video.autop...
2020-11-08 23:46【action】
阅读更多Copy on write collection -- copyonwritearraylist
There is also a series of classes under JUC, all of which are copyonwritexxx, which means copy while writing. What's the matter with this? Let's take ...
2020-11-08 23:46【Liu Zhihang】
阅读更多Concurrent linked queue: a non blocking unbounded thread safe queue
Continue to read the relevant source code below JUC to see the non blocking unbounded thread safe queue concurrent linked queue. Let's have a look. Th...
2020-11-08 23:46【Liu Zhihang】
阅读更多App crashed inexplicably. At first, it thought it was the case of the name in the header. Finally, it was found that it was the fault of the container!
Deployment test, deployment pre release, all tests are ready for production. What??? The code that is as like as two peas in the back end is exactly t...
2020-11-08 23:46【Liu Zhihang】
阅读更多How to reduce the resource consumption of istio agent through sidecar custom resource
In the istio architecture, the main component of the data plane is isto proxy (envoy). About istio proxy, we pay more attention to two issues: request...
2020-11-08 23:46【control】
阅读更多A few lines of code can easily transfer traceid across systems, so you don't have to worry about losing the log!
It's too troublesome to check the log of a new project. It's not clear whether it's the same request from multiple machines. When printing a log, MDC ...
2020-11-08 23:46【Liu Zhihang】
阅读更多Five design patterns frequently used in development
When it comes to design patterns, many people will think that design patterns are commonplace. Some people think that design patterns are necessary an...
2020-11-08 23:46【Zhou Zhou architect】
阅读更多Linked blocking queue based on linked list
In the previous section, we looked at the source code of arrayblocking queue based on data. By reading the source code, we learned that reentrantlock ...
2020-11-08 23:46【Liu Zhihang】
阅读更多How does semaphore, a thread synchronization tool that uses an up counter, look like?
In JUC, in addition to countdownlatch and cyclebarrier, thread synchronizer also has semaphore, which is also implemented based on AQS. Let's look at ...
2020-11-08 23:46【Liu Zhihang】
阅读更多Have you ever thought about why the transaction and refund have to be split into different tables
When I was designing the table structure for a new project recently, I suddenly remembered a problem I met in the interview before. At that time, I wa...
2020-11-08 23:46【Liu Zhihang】
阅读更多Introduction to nmon
This paper introduces that nmon (Nigel's monitor) is a tool provided by IBM to monitor the resources of Aix system and Linux system for free. The tool...
2020-11-08 23:47【From deleting database to running away】
阅读更多Platform in architecture
[Alibaba data platform panorama] [link 1] [Ali is the first proposer of the concept of data platform, and its case is more meaningful for analysis. Fr...
2020-11-08 23:47【Take off the stars】
阅读更多object
Objects can be introduced from the following aspects: 1. Array is an ordered set of data; 2. An object is an unordered set of data, and has properties...
2020-11-08 23:47【Lsowind.】
阅读更多A bunch of code forgot to indent? Shortcut teach you carefree!
Sometimes, your code can be extremely maddening: if a = = b.................. Else: the heat writes a lot to the world, only to find that you forget t...
2020-11-08 23:47【Tuffer tuffer】
阅读更多API部分的知识点复习
Object 重写toString，默认是使用Object的toString()返回的是地址值，重写之后返回的是对象的属性值。 重写equals,默认是使用Object的equals()比较的是对象间的地址值，重写之后比较的是对象间的属性值。 instanceof 是Java里...
2020-11-09 00:05【qintian】
阅读更多B. protocal has 7000eth assets in one week!
! [untitled-3] [- 3]! [untitled-3] [- 3] > b.protocol aims at the liquidation of all mortgage assets, including makerdao. The market has 2 billion US ...
2020-11-08 23:47【quinadephine】
阅读更多14. Introduction to kubenetes
[do you want app to run smoothly like wechat? |Experience to send Dajiang, Huawei, cherry keyboard! ＞＞＞![hot3.png][]][APP_ _ _ Hot3. PNG] kubernetes i...
2020-11-08 23:48【Taizhu-yj】
阅读更多When iperf is installed under centos7, the solution of make: * no targets specified and no makefile found. Stop
[do you want app to run smoothly like wechat? |Experience to send Dajiang, Huawei, cherry keyboard! ＞＞＞![hot3.png][]][APP_ _ _ Hot3. PNG] when iperf i...
2020-11-08 23:48【Bustling city 】
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