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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 ...

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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 ...

[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, ...

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 ...

**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 ...

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 ...

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 ...

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 ...

If the server is powered off and restarted or restarted within the plan, the database instance and monitoring need to be started manually after the server's operating system is started. This paper introduces how to configure the start and shutdown of Oracle database as a system service, and automatically start / shut down the Oracle instance a ...