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Introduction to MongoDB concept MongoDB is an open source database system based on distributed file storage. MongoDB is a product between relational database and non relational database. It is the most functional and relational database among non relational databases. MongoDB is characterized by no Schema restrictions and high flexibility. T ...

1. MongDB startup and shutdown1.1. Command line startup ./mongod --fork --dbpath=/opt/mongodb/data ----logpath=/opt/mongodb/log/mongodb.log 1.2. Configuration file startup ./mongod -f mongodb.cfg mongoDB Basic configuration/opt/mongodb/mongodb.cfg dbpath=/opt/mongodb/data logpath=/opt/mongodb/logs/mongodb.log logappend=true fork=true bind_ip=19 ...

1. Create databaseuse testdb2. Create collectionådb.t_member.insert({name:"zhaomin",age:23})3. Inquirydb.t_member.find() db.t_member.findOne()4. Modificationdb.t_member.update({name:"zhaomin"},{$set:{age:18}}) ＃Other attribute columns will not be affected, and errors will be reported if the primary key conflicts db.t_member.update({name:"zhaom ...

introduction: MongoDB is a very promising database. The official positioning of MongoDB is a general database. In fact, this positioning is somewhat similar to MySQL. Although its popularity is far from reaching the level of MySQL, the author may make an inappropriate comparison. MongoDB, like MySQL N years ago, will become more and more powerf ...

preface In the previous chapter, Yige} introduced how to integrate Redis in SpringBoot, and then realized the caching of the content queried in MySQL into Redis. In fact, if we want to achieve caching effect, we can also use another NoSQL type database, MongoDB. This article will take you to integrate MongoDB in SpringBoot and learn the basic ...

One of the main reasons MongoDB stores portraits is to facilitate expansion, because the portrait content may be constantly updated with the continuous development of products. MongoDB syntax (such as addition, deletion, modification, query, sorting, etc.), Obtain user and news portraits from MongoDB to construct relevant features Introducti ...

introduce   data has become a new commodity, and the price is expensive. As people create unlimited content online, the amount of data on different websites has increased, and many start-ups have come up with the idea of needing this data. Unfortunately, due to time and money constraints, they can't always produce by themselves. &e ...

Copy Set PrincipleThe role of replication setsIn order to achieve high availability of mongodb services, there is a master-slave relationship between replica setsQuickly copy data to other nodes when data is writtenAutomatically select a new node to replace the primary node when it failsWith the above features, if we know redis, we can quickly ...

1, MongoDB configuration 1. Import jar package <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-mongodb</artifactId> </dependency> 2. Configuration of mongodb basic scanning package 1.In the configuration file bootstrap.properties Add driver to spring.data. ...

Open MongoDB service with configuration file: ./mongod -f /mongodb/single/mongod.conf /mongodb/single/mongod.conf is where the configuration file is located Open MongoDB mongo --host=192.168.56.101 192.168.56.101: the ip address of the remote MongoDB server is not written – port means the default port is used for login Databases man ...