Shulou(Shulou.com)06/03 Report--

Activity description: the kicking tribe is a service community that provides core developers with in-depth technical exchanges, development needs and resource sharing. Based on this community, we have invited technology leaders in the industry to make one-on-one breakthroughs in the development needs and remove the stumbling blocks in the development process. Solve development problems for developers with the most professional and efficient answers.

Topic keywords: big data Source / data Security / Cloud Computing / Linux

Tribal lineup: 51CTO Community think Tank

Object-oriented: Java engineer, big data development engineer, IT operation and maintenance, data analyst

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

Event details:

Android- package-Chongqing: I have a question: most for-profit commercial companies and enterprises do not easily disclose their own data, modeling methods and analysis processes, so where is big data's source?

Cloud computing-Enwei-Chengdu: data sources: 1, own user database; 2, collection network (crawler); 3, buy data interface or purchase data; 4, aggregate data API market. Four common data sources for big data.

Android- packet-Chongqing: buy data interfaces or buy data, which may involve another issue, data security. It seems that there is a causal relationship: in order to realize big data's core value, the first step is to collect massive data in the form of "crowdsourcing", and the second step is to carry out "full data mining" through big data's technical approach. Finally, the analysis results are used to carry out "optimal allocation of resources"; but to collect massive data, we must first solve the problem of data security before we can carry out "full data mining" before there is any follow-up development. I don't know if I understand it correctly.

Cloud computing-Enwei-Chengdu: well spoken, every step of the language is refined, mentioned on the point. At present, big data is still in the initial stage, many problems have not been solved, and safety is a common problem in any industry.

Java+ Lisai + Zhengzhou: data collection of input method? Like the input method, can the typing data of many people be counted as big data?

Cloud computing-Enwei-Chengdu: big data is big data only after processing and analysis, otherwise it is only large-capacity binary data. For example, this is the result of refinement and analysis on the basis of input.

Input method

Java+ Li Sai + Zhengzhou: is big data an advanced Java?

1 > App-zee- Chongqing: it can be regarded as one direction of Java.

2 > Cloud Computing-Enwei-Chengdu: if you use the Hadoop platform, there is no doubt that there is another scenario for the use of Java language.

Java+ Li Sai + Zhengzhou: are you doing big data? What does cloud computing do? What is the difference?

1 > Cloud computing-Enwei-Chengdu: cloud computing and big data should be inseparable, because big data's analysis 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 is always just data and has no value to us.

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

Java- stupid birds fly first-Beijing: refer to here > >

Network programming-Fu Zhenhua-Wuhan: I would like to ask you, I now have a need to poll the home page of hundreds of websites on a computer, pop up prompts or send e-mails if they can't be opened. Is there any ready-made software to implement this function?

Cloud Computing-Enwei-Chengdu: URL Monitoring HTTP status Inspection (200ok).

Java net Editor-Haimoto No reason-Changsha: I mean, didn't HTML5 replace Java in big data?

1 > PHP-Coeus- Anhui: these two have nothing to do with big data. H5 is responsible for display, dynamic effect, data processing or depends on the background. The data is pork belly, the processing language is material, and HTML5 is the chopped onion when braised pork comes out of the pot. HTML5 and browsers are like Java and JVM, with a different division of labor. With the improvement of the HTML5 specification, local storage, WebSocket, and memory management have all been done very well.

2 > architect-Cui Yifan-Beijing: HTML5 can do reports, useful, all kinds of data display, reports, before processing, processing, after processing.

3 > Network programming-Fu Zhenhua-Wuhan: HTML is not just a presentation language, it is also very powerful for compiling web games. But it can't interact without a browser, and it can debug based on the browser. Java programs can work as long as they have the JVM of the corresponding operating system, and the memory recovery mechanism is also more perfect.

App-zee- Chongqing: have you ever used the Mint UI one of Vue? The loading of mt-loadmore is more embedded in iframe. There is a problem with pulling on Apple's browser. Have you ever encountered it?

Half-hanging full-stack craftsman-Cao Hongwei-Beijing: many IM providers provide customer service solutions that can be integrated into their own systems.

Newcomer-rookie-Suzhou: ask the boss, if I want to study Linux, I want to start through Ubantu, do I want to read linux or Ubuntu? Where should I start to become a monk on the way to IT? Linux is different from Unix, isn't it?

1 > learn-JSON- Chongqing: look at this "Advanced programming in UNIX Environment".

2 > Operation and maintenance-Huazi-Wuhan: almost, the Linux threshold is low, which is suitable for PC.

Java--Beijing: is there anyone familiar with Spring Data JPA? It's a trend that we've been doing lately. Complex query is OK, updata ran into the hurdle, feeling that SpringBoot is slowly going to catch up with SpringMvc. And SpringDataJpa technology is one of the standard. I hope you can have a look and communicate with us if you have any questions.

Java- Hahan prodigal son-Chengdu: SpringData to do the persistence layer, personal feeling is not easy to use ah, not as good as Hibernate. Because I have been using Hibernate for a long time, I am not used to other ones.

Java-Derrick- Beijing: who is using Linux system? Individuals use a Ubuntu17.0, mainly algorithms and design patterns.

1 > shoveling shit officer-project manager-Beijing: for personal use, Wubantu is good, enterprise level, Red Hat, etc.

2 > Java- gas-Beijing: the company is better to use centos, just like Red Hat.

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

Advance notice of the next phase of the event: June 8

Keywords: intelligent customer service, Android permission, Java method, App

Activity Review: kicked Tribe Phase I: Spark offline Analysis Dimension

The second phase of the kicked tribe: the application and practice of big data in the medical field

The third phase of kicking tribe sitting and diagnosis: an analysis of the advantages of Python in big data's treatment

The fourth issue of the kicked Tribal Story Collection: the Application scenario and role of Java message queue

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