Freaks City

Understanding Empty Rollbacks An empty rollback occurs when the Cancel operation of a TCC (Try-Confirm-Cancel) transaction runs, but the corresponding Try phase was never successfully executed. This results in an attempt to compensate for resources that were never reserved. Scenario Example Consider a scenario where a coordinator dispatches a T ...

Redis Cache and Database Consistency Caching improves performance and reduces database load, but introduces potential inconsistencies between cached data and the database. Inconsistent data leads to stale reads from the cache. Non-Concurrency Scenarios Update Cache First, Then Database If cache udpate succeeds but database update fails, the cac ...