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Although there are still a lot of problems with keyhashvalue, it is generally possible to determine that "Keyhashvalue is used to lock resources." Rather than what I said before, in order to quickly find the corresponding records according to this

1. Overview E-Mail is one of the most commonly used network applications, and has become an important channel for communication. But spam spam most people, and recent surveys show that 93% of respondents are dissatisfied with the amount of junk mail

Redis is a key-value storage system. Similar to memcached, it solves the situation where data is completely lost after a power outage, and she supports more untyped value types, and supports lists (list), sets (set), and Zsets (ordered sets) of data

In Oracle databases, consistent gets is useful for judging the performance of a section of SQL, and generally comparing the performance of two segments of SQL is not to see whose execution time is short, but to see whose consistent gets small. But