use openssl to retrieve certificate
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 […]
Read More →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 […]
Read More →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. […]
Read More →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 […]
Read More →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 […]
Read More →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 […]
Read More →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, […]
Read More →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
Read More →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, […]
Read More →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 […]
Read More →In this blog post “Balanced Binary Search Tree“, I introduce two balanced binary search trees, which are AVLTree and RedBlackTree. AVLTree is efficient for search. […]
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