Category: High Performance

How to Fix DataX MySQL Sync Error: Failed to Retrieve Table Column Info
 
 
When using DataX to sync MySQL, an error occurs: Failed to retrieve table column information.
 
 
Solution: Check the relevant table and column names based on the error message, as shown below:
 
 
The message above indicates that the column “seting” in the table could not be retrieved. Upon inspection, the original column should actually be “sett …

Recently, while configuring an nginx+tomcat+memcached cluster for session management, an error occurred. The method used the relatively efficient kryo approach.
Error message:

Caused by: com.esotericsoftware.kryo.SerializationException: Unable to deserialize object o …

Qin Jun currently works on the operations platform of Meizu’s Flyme Platform R&D Department, responsible for system operations of the Flyme foundational platform and having experienced server scaling from hundreds to thousands of units. He possesses in-depth knowledge of Meizu’s foundational network, system deployment and delivery, and resource operations cost verification. He is currently responsible for the IaaS …

Environment Requirements:
Linux system (using my CentOS as an example)
Tomcat or TomEE
Maven (typically already available on most systems)

I. Jenkins Download

Download URL: http://jenkins-ci.org/

II. Installation
We won’t go into detail about Tomcat installation here; if you’re unfamiliar with it, you can find previous articles on this site.
…

Ceph, as one of the leading software-defined storage solutions, has seen tremendous momentum in recent years, with many companies deploying it in testing and production environments—though complaints about it have persisted as well. This article attempts to compile some use cases the author has come across. 1. Ctrip …