GreenPlum installation details (CENTOS 6.x)
GreenPlum cluster setup and installation steps
Additional reference:
https://gp-docs-cn.github.io/docs/best_practices/sysconfig.html,
https://blog.csdn.net/king13127/article/details/83989704
1, Installation instructions
1.1 environmental description
Operating system: CentOS 6.x 64bit
Greenplum:Greenplum ...
Posted on Fri, 28 Feb 2020 01:53:24 -0500 by imi_99
How to make a custom toolbar in Report Preview
Most report generators have a report view mode with a toolbar, from which you can perform various operations on reports. For example, turning pages, printing, exporting, etc. However, sometimes there are not enough buttons to have the functionality you want. This can be a quick export to a format, a ...
Posted on Thu, 27 Feb 2020 22:13:08 -0500 by harkonenn
[Java] batch operation optimization
Batch acquisition
In development, sometimes it's hard to avoid using methods like findAll(), or getting all the data in the table. But when this amount is large, it is obviously unreasonable to load it from the database into memory at one time. In this case, batch access can be used. For example, ba ...
Posted on Thu, 27 Feb 2020 06:39:05 -0500 by Ilyes
Manual notes injection of MySql
1, Basic knowledge
1. MySQL statement
slightly
2. MySQL functions
System user() system user name
user() user name
Current user
Session uuser() user name to connect to the database
database() database name
Version() MySQL database version
Load file() to hexadecimal or decimal MYSQL to read the local fi ...
Posted on Thu, 27 Feb 2020 03:17:53 -0500 by drizzle
Serverless + Egg.js background management system practice
As a front-end developer, when choosing the Nodejs back-end service framework, I will think of it for the first time Egg.js It has to be said that Egg.js is a very excellent enterprise framework. Its high scalability and rich plug-ins greatly improve the development efficiency. Developers only need to f ...
Posted on Wed, 26 Feb 2020 21:56:36 -0500 by Nickosssss
How to configure Spring
1. XML configuration file.
The dependencies and services required by a bean are specified in an XML formatted configuration file. These configuration files typically contain many bean definitions and application specific configuration options. They usually start with a bean tag. For example:
<bean id="studentBean" class="org.edureka.firstSp ...
Posted on Wed, 26 Feb 2020 07:55:26 -0500 by xXx_Hobbes_xXx
Kubernetes deploy Nebula diagram database cluster
What is Kubernetes
Kubernetes is an open source application for managing containerized applications on multiple hosts in the cloud platform. Kubernetes aims to make deployment of containerized applications simple and efficient. Kubernetes provides a mechanism for application deployment, planning, update and maintenance. < br / > kubernete ...
Posted on Wed, 26 Feb 2020 07:23:55 -0500 by rmbarnes82
4, jOOQ series tutorial - Record details
Complete tutorial: https://jooq.diamondfsd.com
In the previous chapters, there are Record interfaces in almost every chapter, as well as some simple explanations and code examples. As the most important interface in jOOQ, this chapter will explain the various API and basic usage of Record in detail
Record form
Record is an interface defined by ...
Posted on Wed, 26 Feb 2020 05:05:07 -0500 by Unknown User
Real time synchronization of mysql data to elastic search
bellengao follow
32018.06.20 18:20:43 words 1456 reading 34146
The business needs to synchronize mysql data to es in real time, and realize low latency retrieval of data in ES or other data analysis and processing. In this paper, the idea of real-time synchronization of data to es by synchroniz ...
Posted on Wed, 26 Feb 2020 04:12:20 -0500 by jayarsee
Oracle audit part summary of system audit table space migration
1, Blocking in migration
DBMS? Audit? Mgmt.set? Audit? Trail? Location is an online migration method according to the online data. However, during the migration process, a large number of sessions are found waiting for the enq: ZA - add std audit table partition event. If the time is too long, the ...
Posted on Wed, 26 Feb 2020 02:09:47 -0500 by rkeppert