Tag：Accommodate
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Time：2020-4-2
Redis memory recovery mechanism Redis’s memory recovery mainly focuses on the following two aspects: 1. Redis expiration policy: delete key value of expiration time 2. Redis elimination strategy: memory knockout data triggered when memory usage reaches maxmemory upper limit Redis’s expiration strategy and memory obsolescence strategy are not one thing. Don’t confuse them in actual […]
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Time：2019-11-8
As you may know, the unbounded wildcard set > can hold any type of element, and the original type set can hold any type of element. What’s the difference between them? 1. Two facts about set > There are two facts about set > Item 1:? Represents any type. Set > can hold any type […]
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Time：2019-6-13
Preface We’ve introduced the use before.PHP script export SQL statementTo the process and points of attention in the test clothes, there is a problem that has not been solved before, that is, blob type data in MySQL is not successfully imported. This time we found a solution. Here’s a record. What is the blob type? […]
