• MySQL learning


    1. Throughput definition: the number of queries per unit time is exactly the reciprocal of our performance definition2. The minimum time granularity that MySQL can store is seconds (MariaDB supports second level time types)3. DataTime: independent of time zone, it uses 8 fields of storage space in the format ofInteger of yyyymmddhhmmss4. Timestamp: uses 4 […]

  • Advanced Linux: split reducer


    ❓ What if the state is too large Because there is only one store in Redux applications, when the interaction between applications becomes more and more complex, the store will become a very large object. At this time, we can use thecombineReducers()Method combines multiple small reducers into one rootreducer, and each small reducer only cares […]