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Vue like rendering and database of wechat applet Front row idea: the content of this article includes: Class Vue rendering → wxss.js.wxml → cloud development → cloud development usage (storage and database) → database initialization → insert → json file import → query → life cycle Front row tips: Th ...

catalogue 1. Installation and deployment of MySQL database 2. Web database mysql 3.MySQL asynchronous replication   1.mysql master-slave replication Configure slave database Master slave replication process   2.GTID copy 3.mysql delayed synchronization 4. mysql parallel replication 4. Semi synchronous replication of MySQL da ...

1, Background DataX is an open-source offline synchronization tool for heterogeneous data sources from Alibaba. It is committed to realizing stable and efficient data synchronization between various heterogeneous data sources, including relational databases (MySQL, Oracle, etc.), HDFS, Hive, ODPS, HBase, FTP, etc. However, with the incre ...

origin The company wants to make a product. Of course, the environment is built before making the product. Most of the environments have been written before. Today, let's write about the installation of kafka. Step 1: download the installation package Download the kafka installation package. Mine is kafka_2.11-2.1.1. However, there are s ...

Introduction to hadoop Hadoop is a distributed system infrastructure developed by the Apache Foundation. Users can develop distributed programs without knowing the underlying details of the distribution. Take full advantage of the power of clusters for high-speed operations and storage. Hadoop implements a Distributed File System, one of w ...

Why did you write this article Since I wrote my first Python series column on June 13, 2021, I have successively updated 27 Python series articles. Here, I would like to thank readers for their support and reading, especially the little partners of one button three company. This column is named [Python from introduction to mastery], which is ...

The previous chapter tested the serial backup and recovery of KADB, pg_dump/pg_restore. This chapter tests the parallel backup and recovery gpbackup/gprestore of KADB. Because pg_dump and pg_restore is limited by the master node and cannot meet the backup and recovery of a large amount of data. Therefore, KADB provides gpbackup and gprestore ...

Step 1: - Preparation-- Create (projiect) folderOpen the terminal under the current file -- enter a command -- create a package management file npm i npm init -y or npm init // Generate package.json source file; If the name of the project folder is in Chinese, use npm init. If it is in English, use npm init directly npm init -y npm i my ...

1. Test environment Add, delete, modify and query Python version 2.7.5 and DM8 database in Window. The following are the notes on stepping on the pit. SoftwareeditionDM databaseDM 8.0 and abovePythonPython 2.7.5Window10 professionalWindow10 professional Note: in case of error reporting during implementation, you must see whether there is a so ...

StreanGraph It is a DAG (stored in the form of adjacency table), which stores the topology information of the whole flow and is composed of a series of StreamEdge and StreamNode. Call StreamExecutionEnvironment.getStreamGraph() to generate a StreamGraph. StreamExecutionEnvironment.getStreamGraph() clears the transformations saved in StreamExe ...