Mybatis-plus Learning Notes

Mybatis-plus Dependent Version Number 3.0.5 supplement This technology is based on SpringBoot technology to complete use Do not use with mybatis, it may cause resource mismatch Notes for version 3.0.5, the latest version may be used differently, choose carefully Set up use project process 1.ImpUTF-8...

Posted by FloridaNutz on Mon, 11 Oct 2021 21:52:47 +0530

Database persistence operation

Database persistence operation Rdb mode persistence summary Rdb mode is a mechanism to save the key/value in redis manually (save blocking, bgsave asynchronous) or periodically. Rdb mode is generally the default data persistence mode of redis. The persistence mechanism of this mode will be turnUTF-8...

Posted by dawson1323 on Tue, 12 Oct 2021 02:16:03 +0530

04 redis data persistence

brief introduction background Redis is an in memory database, and data may be lost in case of power failure. For example, if you hang up the whole redis, then redis is unavailable. If there is no persistence, redis will lose all data. If you make a piece of data to disk through persistence, anUTF-8...

Posted by devinemke on Tue, 12 Oct 2021 03:40:47 +0530

MySQL database learning tutorial, from 0 to getting started

mysql day01 class notes 1. What is a database? What is a database management system? What is SQL? What is the relationship between them? Database: English words DataBase´╝îabbreviation DB. A combination of files that store data in a format. As the name suggests: a warehouse for storing data is aUTF-8...

Posted by PHPslide on Tue, 12 Oct 2021 03:52:20 +0530

Redis interview -- the difference between Rdb and AOF

background Redis is an in memory database, and data may be lost in case of power failure. For example, if you hang up the whole redis, then redis is unavailable. If there is no persistence, redis will lose all data. If you make a piece of data to disk through persistence, and then synchronize iUTF-8...

Posted by bruckman on Tue, 12 Oct 2021 06:59:11 +0530

Introduction to Android kotlin collaboration: preliminary explanation of key knowledge points of kotlin collaboration

Because the article involves only a lot of points and the content may be too long, you can jump in stages according to your ability level and familiarity. If there is something wrong, please send me a private letter. Thank you very much. Key knowledge points of kotlin collaborative process At tUTF-8...

Posted by bsprogs on Tue, 12 Oct 2021 07:19:10 +0530

Redis data persistence practice

brief introduction background Redis is an in memory database, and data may be lost in case of power failure. For example, if you hang up the whole redis, then redis is unavailable. If there is no persistence, redis will lose all data. If you make a piece of data to disk through persistence, anUTF-8...

Posted by RTT on Tue, 12 Oct 2021 08:30:30 +0530

Interviewer: why does Redis implement SortedSet using jump table instead of red black tree?

What is a jump watch The jump table was invented by William Pugh. In his paper Skip lists: a probabilistic alternative to balanced trees, he introduced the data structure, insert and delete operations of the jump table in detail. The paper introduces the jump table as follows: Skip lists are a UTF-8...

Posted by andrin on Tue, 12 Oct 2021 23:33:24 +0530

EMQ X login authentication using MySQL

Introduction to EMQ X client login authentication Identity authentication is an important part of most applications. MQTT protocol supports user name and password authentication. Enabling identity authentication can effectively prevent illegal client connections. Authentication in EMQ X means UTF-8...

Posted by capb on Wed, 13 Oct 2021 03:25:30 +0530

Advanced use of Redis - Redis cluster

Redis cluster is an installation facility that can share data among multiple redis nodes. The Redis cluster does not support Redis commands that need to process multiple keys at the same time, because executing these commands requires moving data between multiple Redis nodes, and under high loaUTF-8...

Posted by FormatteD_C on Thu, 14 Oct 2021 05:50:49 +0530