2013-01-01 the First day

2013-01-01 the First day.

评论

发表评论

此博客中的热门博文

Java Base == & equals

  Tags:  Integer cache, == , equals This Blogger emphasizes that in actual development, developers should prioritize using .equals() to compare object values ​​rather than simply relying on == to compare references. Java's Integer cache mechanism provides memory optimization for Java programs with values ​​in the range of -128 to 127.However, values ​​outside this range will result in the creation of new objects, resulting in unexpected results in == comparisons.       public static void main(String[] args) {         Integer a = 228;         Integer b = 228;         System.out.println(a == b); // false         Integer x = 1;         Integer y = 1;         System.out.println(x == y); // true         Integer c = 228;         Integer d = 228;         System.out.println(System.identityHash...
阅读全文

distributed transaction solution - Seata

 Distributed Transaction Solution GTS(Global Transaction Service) ACID XA(eXtended Architecture) X/Open. TM(Transaction Manager), RM(Resource Manager), and Application Manager. XA->2PC(Prepare, commit, rollback)->TCC(Try,Confirm,Canccel)->3PC(CanCommit,PreCommit,DoCommit) Saga , 1987 year, by Hector and Kenneth for Long lived transaction. Princeton University Seata TXC->GTS->Seata->Seata GA TC(Transaction Coordinator),TM(Transaction Manager),RM(Resource Manager). http://seata.io/en-us/docs/overview/what-is-seata.html XID - Transaction ID TC - Transaction Coordinator Maintain status of global and branch transactions, drive the global commit or rollback. TM - Transaction Manager Define the scope of global transaction: begin a global transaction, commit or rollback a global transaction. RM - Resource Manager Manage resources that branch transactions working on, talk to TC for registering branch transactions and reporting status of branch transactions, and driv...
阅读全文

Input in element.eleme.io

Input Input data using mouse or keyboard. Input is a controlled component, it always shows Vue binding value . Under normal circumstances, input event should be handled. Its handler should update component's binding value (or use v-model ). Otherwise, input box's value will not change. Do not support v-model modifiers. ¶ Basic usage < el-input placeholder = "Please input" v-model = "input" > </ el-input > < script > export default { data() { return { input : '' } } } </ script > Hide ¶ Disabled Disable the Input with the disabled attribute. < el-input placeholder = "Please input" v-model = "input" :disabled = "true" > </ el-input > < script > export default { data() { return { input : '' } } } </ script > ¶ Clearable Make the Input clearable with the...
阅读全文