Q101.which two queries are examples of successful SQL injection attacks?
A.SELECT id, name FROM backup_before WHERE name‘; DROP TABLE injection; --’; B. SELECT id, name FROM user WHERE id23 oR id32 OR 11; C. SELECT id, name FROM user WHERE user.id (SEL…
set
在执行set.add方法后会返回一个boolean值,如果添加成功则返回true,否则返回false。
Hashset底层是HashMap,HashMap底层是(数组链表红黑树)。
LinkedHashSet是HashSet的子类,底层是一个LinkedHashMap…
k8s 1.10.26 一次containerd失败引发kubectl不可用问题
开机k8s 1.10.26时,报以下错误
[rootmaster ~]# kubectl get no
E0515 08:03:00.914894 7993 memcache.go:265] couldnt get current server API group list: Get "https://192.168.80.50:6443/api?…