I was asked why I learned Python crawler, because I like my little sister

Baidu sexy beauty wallpaper to understand, for nothing else, is to be able to better learn Python! Do you believe that? As long as I see the website with photos of my sister, I just want to download them in bulk!   Why to learn about web crawlers(1) Learning the web crawler, you can customize a search engine to better understand the principle o ...

Posted by kappaluppa on Sat, 20 Jun 2020 05:55:04 +0200

When the back end throws 100000 pieces of data to you at one time, as a front-end engineer, what should you do?

Some time ago, a friend asked me about a problem their company encountered. He said that the back-end didn't realize paging function for some reason, so he returned 20000 pieces of data at a time, and let the front-end display them in the user interface with select component. After listening, I immediately understood his confusion. If the 20000 ...

Posted by rhodry_korb on Wed, 10 Jun 2020 04:35:32 +0200

Python tells you: what are the videos of ten million net red Li Ziqi?

Yunqi information:[ Click to view more industry information]Here you can find the first-hand cloud information of different industries. What are you waiting for? Come on! Guide: today, let's talk about Li Ziqi who lives a poem. See the second part for Python technology. Official account background, reply to the keyword "Li Zi Qi" to o ...

Posted by itpvision on Fri, 05 Jun 2020 09:46:32 +0200

Kafka Core API - Consumer Consumer

Automatic Submission from Consumer stay Above The use of the Producer API is described. Now that we know how to send messages through the API to Kafka, the producer/consumer model is one less consumer.Therefore, this article will introduce the use of the Consumer API, which consumes messages from Kafka to make an app a consumer role. As always ...

Posted by itisprasad on Sun, 24 May 2020 20:58:35 +0200

[ML] write a credit qualification evaluation system -- handwritten logistic regression model

[ML] write a credit qualification evaluation system -- handwritten logistic regression model In the era when everyone talks about big data, the position of data processing is becoming more and more important. A bank may face tens of thousands of loan applications every day. If it is audited manually, ...

Posted by stuartc1 on Fri, 15 May 2020 14:59:04 +0200

Redis installation deployment application [part]

Linux Installation of Redis 1. Preparing the installation package 2. Unzip the installation packagetar zxvf redis-5.0.5.tar.gz 3. Enter the folder you just unzipped and enter the make command 4. After waiting for the above process to complete, enter the make install command 5. Run. / Redis server under the redis/src / folder to start Redis ...

Posted by Bob_PHP_Builder on Sat, 09 May 2020 19:12:10 +0200

Detailed explanation of RowFilter of HBase Filter

**This paper introduces the use of the Java & shell API of HBase RowFilter in detail, and posts the relevant sample code for reference. RowFilter filters based on row keys. When it comes to data filtering through HBase Rowkey, you can consider using it. For details and principle of comparator, please refer to the previous revision: Comparat ...

Posted by jonners on Tue, 05 May 2020 08:00:28 +0200

Elastic search 7.1 in depth learning

1. elatic engineer certification examination If you have the strength, you can take the exam. It will be helpful for the appreciation and salary increase 2. es architecture Ecosphere install jvm configuration Install plug-ins Use elasticsearch plugin in elasticsearch-7.1.0/bin to install the plug-in. es will download a ...

Posted by oskom on Mon, 04 May 2020 14:05:17 +0200

Hadoop 8-day course - day 6, MapReduce details

hive About hive A tool for translating sql statements into mapreduce programs. Create table statement CREATE TABLE page_view(viewTime INT, userid BIGINT, page_url STRING, referrer_url STRING, ip STRING COMMENT 'IP Address of the User') COMMENT 'This is the page view table' PARTITIONED BY(dt STRING, country STRING) ROW FORMAT DELIMI ...

Posted by mainewoods on Wed, 29 Apr 2020 14:54:07 +0200

Installation and configuration of big data platform CDH5.16.2

Tags (space separated): building big data platform 1: Environment initialization 2: Installation of CDH5.16.2 1.1: introduction to system environment System: RHEL7.7X64 cat /etc/hosts --- 192.168.100.21 rhel01.flyfish 192.168.100.22 rhel02.flyfish 192.168.100.23 rhel03.flyfish 192.168.100.24 rhel04.flyfish ----- Only three ...

Posted by Berone on Sun, 26 Apr 2020 17:47:28 +0200