The fifth episode of the Aite tribe clinic: data collection and front-end application

【51CTO.com original article】 Activity description : Aiti Tribe is a service community that provides core developers with in-depth technical exchanges, solutions to development needs, and resource sharing. Based on this community, we invite industry technology experts to provide one-on-one breakthroughs on development needs and remove stumbling blocks in the development process. We help developers solve development problems with the most professional and efficient answers.

Topic keywords : Big data sources/data security/cloud computing/Linux

Tribe lineup : 51CTO community think tank

Target audience : Java engineers, big data development engineers, IT operations and maintenance, data analysts

How to participate : Join the 51CTO developer QQ exchange group (group number 370892523 (full), please add 312724475 ). If you have any technical questions, ask in the group or send them to the group owner.

Event Details :

Android-Xiaobao-Chongqing : I have a question. Most profit-making commercial companies and enterprises will not easily disclose their data, modeling methods and analysis processes. So what is the source of big data?

Cloud Computing - Enwei - Chengdu : Sources of data: 1. Own user database; 2. Collection network (crawler); 3. Buy data interface or purchase data; 4. Aggregate data API market. Four common sources of big data.

Android-Xiaobao-Chongqing : Buying data interfaces or purchasing data may involve another issue, data security. There seems to be a causal relationship: to realize the core value of big data, the first step is to collect massive data through "crowdsourcing", the second step is to "mine the entire data" through the technical approach of big data, and finally use the analysis results to "optimize resource allocation"; but to collect massive data, the data security issue must be solved first, and then "mining the entire data" can be carried out, and then there can be subsequent development. I don't know if I understand it correctly?

Cloud Computing - Enwei - Chengdu : Well said, every step is refined and to the point. Big data is still in its infancy, many problems have not been solved, and security is a common problem in any industry.

Java+Li Sai+Zhengzhou : Is the data of input method collected? For input method, can the typing data of many people be counted as big data?

Cloud Computing - Enwei - Chengdu : Big data can only be considered big data after being processed and analyzed, otherwise it is just a large amount of binary data. For example, this is the result of refining and analyzing the input.

Input Method

Java+Li Sai+Zhengzhou : Is big data the advancement of Java?

1>App-zee-Chongqing : It can be regarded as a Java direction.

2> Cloud Computing - Enwei - Chengdu : If the Hadoop platform is used, it is undoubtedly another scenario for the use of Java language.

Java+Li Sai+Zhengzhou : Are you working on big data? What does cloud computing do? What is the relationship?

1> Cloud Computing - Enwei - Chengdu : Cloud computing and big data should be inseparable, because the analysis of big data is inseparable from the basic platform of cloud computing.

2> Back-end interface development-Liu Shengjie-Chengdu : Cloud computing and big data are inseparable. Without cloud computing, big data will always be just data and have no value to us.

Java-Sun-Shenzhen : Does anyone know how to write a unit test? Does this prove that it is installed?

Java-The Early Bird Flies First-Beijing : Reference here>>

Network Programming - Fu Zhenhua - Wuhan : I have a question for you guys. I have a requirement to open hundreds of website homepages on a computer. If they cannot be opened, a prompt will pop up or an email will be sent. Is there any ready-made software to achieve this function?

Cloud Computing - Enwei - Chengdu : URL monitoring HTTP status detection (200 ok).

Java Web Editor - Haiben Wuyin - Changsha : I am asking if HTML5 has replaced Java in big data?

1>PHP-Coeus-Anhui : These two have nothing to do with big data. H5 is responsible for display and animation, and data processing is still done in the background. Data is pork belly, processing language is material, and HTML5 is the chopped green onion when the braised pork is out of the pot. HTML5 and browsers are like Java and JVM, with different divisions of labor. With the improvement of HTML5 specifications, local storage, WebSocket, and memory management have all been done very well.

2>Architect-Cui Yifan-Beijing : HTML5 can be used to make reports, which are useful, including various data displays and reports before, during and after processing.

3> Network Programming - Fu Zhenhua - Wuhan : Isn't HTML just a presentation language? It is also very powerful for programming web games. But it cannot interact without a browser. There are many debugging methods based on the browser. Java programs can work as long as there is a JVM corresponding to the operating system, and the memory recycling mechanism should be more complete.

App-zee-重庆: Have you used Vue's Mint UI? There is a problem with mt-loadmore's load more embedded in an iframe when pulling up on Apple's browser. Has anyone encountered this?

Half-Baked Full-Stack Craftsman - Cao Hongwei - Beijing : Many IM providers offer customer service solutions that can be integrated into your own systems.

Newcomer - Rookie - Suzhou : I have a question for you guys. If I want to study Linux and want to start with Ubuntu, should I read books about Linux or Ubuntu? Where should I start if I want to start working in IT? Aren't Linux and Unix different?

1>Learning-JSON-Chongqing : Read this "Advanced Programming in UNIX Environment".

2> Operation and Maintenance - Huazi - Wuhan : About the same. Linux has a low threshold and is suitable for tinkering with PCs.

Java-气-北京: Is anyone familiar with Spring Data JPA? It is a trend and I am working on it recently. Complex queries are OK, but I have encountered difficulties with update data. I feel that SpringBoot is slowly catching up with SpringMvc. And SpringDataJpa technology is one of the standard configurations. I hope you can take a look and discuss with us if you have any questions.

Java-Hahanlangzi-Chengdu : I use SpringData as the persistence layer. I personally feel that it is not easy to use. It is not as easy to use as Hibernate. I have used Hibernate for a long time, so I am not used to other ones.

Java-Derrick-Beijing : Is anyone using Linux? I personally use Ubuntu 17.0, mainly algorithms and design patterns.

1> Project Manager - Beijing : For personal use, Ubuntu is good, enterprise-level, Red Hat, etc. are all good.

2>Java-气-Beijing : It is better for the company to use centos, which is the same as Red Hat.

Do you still have questions about these solutions? Welcome to join the 51CTO developer QQ exchange group 312724475 for discussion.

Next event : June 8

Keywords : Intelligent customer service, Android permissions, Java methods, App

Activity review : Aiti Tribe ***: Spark offline analysis dimension

The second issue of Aiti Tribe: Application and practice of big data in the medical field

The third episode of the Aiti tribe consultation: Analysis of Python's advantages in big data processing

The fourth issue of the Aiti Tribe Story Collection: Application scenarios and functions of Java message queues

[51CTO original article, please indicate the original author and source as 51CTO.com when reprinting on partner sites]