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database transaction acid

2021-03-01
 |  No Comments
 |  database

A few days ago, I encountered the term ‘ACID’ when reading one article about database. I summarized the term in this post after searching it […]

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use openssl to retrieve certificate

2021-02-23
 |  No Comments
 |  certificate, openssl

These days I am working on a certificate issue. During the debug session, I got a trick about how to retrieve the certificate from a […]

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Kubernetes pod termination events

2021-02-10
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 |  kubernetes

A few days ago I was assigned a user story to investigate the upgrade of our application in Kubernetes environment without breaking the application servicing customers. […]

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simple zookeeper shell commands

2021-02-09
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 |  zookeeper

A few days ago I encountered an issue in a Kafka cluster. Each Kafka instances in the cluster constantly reported the below error logs: [2021-02-01 […]

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setup robot framework environment

2021-02-04
 |  No Comments
 |  robot

Robot Framework is widely used in our company to do webapp automation testing. This post lists the required steps to setup the environment for the robot […]

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install chrome in ubuntu and rhel linux

2021-02-03
 |  No Comments
 |  linux

Chrome is an excellent web browser nowadays. It is widely used by normal users and web developers in Microsoft Windows OS. Sometimes, it is also […]

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pypi mirror from aliyun

2021-02-02
 |  No Comments
 |  python

When I use ‘pip install xxx’ command to install a python package, the pip command will download the package from https://pypi.org/simple and then install it. However, […]

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raw.githubusercontent.com的DNS记录被污染了

2021-02-01
 |  No Comments
 |  uncategorized

今天晚上我在自己的Ubuntu系统上,执行如下命令,想安装pyenv工具: curl -L https://github.com/pyenv/pyenv-installer/raw/master/bin/pyenv-installer | bash 结果遇到错误,报connection refused。 curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused

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hello world 2021

2021-01-31
 |  No Comments
 |  uncategorized

Nearly one month has passed since 2021. when looking back in 2020, I went though a lot of things. Some of them made me sad, […]

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an introduction to parallel garbage collection

2021-01-30
 |  No Comments
 |  java, jvm

These days I am reading a book about Java Performance. One of its chapter is about Parallel Garbage Collection, which I think is really short […]

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