Huawei’s new Mate 60 Pro sold out within an hour! According to industry chain source: Huawei’s sales target of Mate 60 series mobile phone has risen to 40 million. At 12:08 on August 29, Huawei directly initiated the pioneer plan of the Mate 60 series. Huawei Mate 60 Pro 12+512GB version is released on Huawei […]
Problem description: The hardware configuration of the front-end server and the source server is as follows. The system is centos7: CPU: E5-2696V4*2(88 threads)Memory: 64GB DDR4Hard disk: 500GB SSD (about 450M/s for read/write) Both the front-end and back-end servers use nginx, and they can test concurrency independently. After the front-end reverse proxy connects to the back-end, […]
As the title says, I have always been disgusted by Samsung’s products, especially SSD. Samsung always give me the impression that it is good at packaging itself, naming its high-end products. Problems have emerged one by one in the past two years, and the company’s positioning, selling price, and some operations make me uncomfortable. 0E […]
Suppose now there is a function getUserInfo() that queries for user information and the parameter is userId. If the userId passed in does not meet the formatting requirements, or if the corresponding user information cannot be found based on this userId, the function has 2 ways to handle the situation return false or null to […]
Introduction We currently use ceph as persistent storage for Grafana in our k8s cluster, so once I delete and rebuild Grafana’s Deployment, all previous data will be lost and the rebuilt PV will be mapped to the new location on the backend storage. Fortunately, I did rebuild it by hand and didn’t back it up […]