The Redis server is an event-driven program that mainly handles two types of events: file events and time events. The processing of these events is closely related to the execution of Redis commands. Next, I will use the Redis server command as the starting point to deeply analyze its working principle and importance. First, we […]
Tag: invisible
Be wary of invisible retry mechanisms: why you must consider idempotence when using RPC
0 Article Overview In RPC scenarios, duplicate data problems caused by retries or failure to implement an idempotent mechanism must be paid attention to. It may cause problems such as multiple orders being created for one purchase, and a notification message being sent multiple times. This is a technical issue. Problems that people must face […]
Data Hijacking Revealed: Vue’s Invisible Power and Infinite Possibilities
Article directory 1. Initialization phase 2. Responsive Detector 3. Data hijacking 4. Template compilation 5. Summary Vue.js implements two-way binding of data through data hijacking. It uses a mechanism called a “reactive system” to track and respond to changes in data, thereby automatically updating related views. Vue’s data hijacking principle is mainly divided into the […]
pg error attempted to delete invisible tuple
Description of the problem The postgresql database executes delete and reports an error: attempted to delete invisible tuple, and executes select with the same conditions without reporting an error delete from lzltab1; select count(*) from lzltab1; The result of executing full table delete and full table query: M=# delete from lzltab1; ERROR: 55000: attempted to […]
[Solved] Call dismiss to exit the interface when DialogFragment’s onStop (completely invisible) reports an error solution
Call dismiss to exit the interface when DialogFragment’s onStop (completely invisible) reports an error solution override fun onStop() {<!– –> super.onStop() // dismiss() // error dismissAllowingStateLoss() //ok } Error log java.lang.RuntimeException: Unable to stop activity {<!– –>com.xxx.yyy/com.xxx.yyy.MainActivity}: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState at android.app.ActivityThread.callActivityOnStop(ActivityThread.java:4182) at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:4152) at android.app.ActivityThread.handleStopActivity(ActivityThread.java:4227) at android.app.servertransaction.StopActivityItem.execute(StopActivityItem.java:41) at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:145) […]