coding judge system
https://github.com/DMOJ/online-judge https://github.com/DOMjudge/domjudge https://github.com/zhblue/hustoj https://blog.huli.tw/2020/03/23/en/build-your-own-online-judge-system/
what is std::forward and universal reference
std::forward, could you explain what does it mean, why it is needed there? Certainly! std::forward is a utility function in C++ that is used to implement perfect forwarding. Perfect forwarding…
Update k8s certs
kubeadm certs check-expiration kubeadm certs renew all systemctl restart kubelet ( or other api server etc) re-generate .kube/config # ssh <control-node1-cluster1> # sudo kubeadm kubeconfig user –client-name kubernetes-admin –org=system:masters…
iouring vs traditional read/write on files
what is difference between iouring vs normal hard driver driver software io_uring is a relatively new I/O interface introduced in the Linux kernel (starting from version 5.1) to provide a…
how condition variable wait_for with timeout implemented
essentially it is: os scheduler constant run + queue + timer how to let queue notify client that new element available instead of client poll/loop to check? ChatGPT To notify…
