This version of the documentation is archived and no longer supported. View thecurrent documentationto learn how toupgrade your version of MongoDB. Definition Generates a BSONUUIDobject. UUID()has the following syntax: UUID(<string>) Parameter ...
MongoDB 是一个流行的 NoSQL 数据库,它使用 BSON(Binary JSON)格式来存储数据。BSON 是一种类似 JSON 的二进制编码格式,可以存储更丰富的数据类型。 相关优势 唯一性:UUID 确保了每个标识符的全局唯一性,这在分布式系统中非常有用。 无需中央协调:UUID 的生成不需要中央服务器或协调器,这使得它们非常适合分...
mongodb-org-3.2.repo file so that you can install MongoDB directly, using...[mongodb-org-3.2] name=MongoDB Repository baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org...jsonArray -h host:port --db db -c collections -q query string,查询语法 -f 选择导出字段 -o ...
details.shard string The shard where the inconsistency exists. details.localUUID UUID The UUID registered locally on the shard. details.uuid UUID The UUID of the collection found in the config.collections cluster catalog. Example Use the db.adminCommand() method to call the checkMetadataConsistency...
>> Storing UUID as Base64 String in Java >> Generating Unique Positive long Using UUID in Java >> Generate the Same UUID From a String in Java >> UUID vs. Sequential ID as Primary Key >> Validate UUID String in Java >> UUID as Entity ID in MongoDB ...
All we have to do is to specify the uuidRepresentation parameter in our MongoDB client at startup: @Bean public MongoClient mongo() throws Exception { ConnectionString connectionString = new ConnectionString("mongodb://localhost:27017/test"); MongoClientSettings mongoClientSettings = MongoClientSet...
* ObjectId 是 MongoDB 数据库的一种唯一 ID 生成策略, *是 UUID version1 的变种,详细介绍可见:服务化框架-分布式 Unique ID 的生成方法一览。 * * @return */ public String objectId() { return ObjectId.next(); } } 1. 2. 3. 4.
但与此同时,使用MAC地址会带来安全性问题,这就是这个版本UUID受到批评的地方。同时, Version 1没考虑过一台机器上起了两个进程这类的问题,也没考虑相同时间戳的并发问题,所以严格的Version1没人实现,Version1的变种有Hibernate的CustomVersionOneStrategy.java、MongoDB的ObjectId.java、Twitter的snowflake等。
我正在使用 uuid.uuid1() 为我所有的 MongoDB 文档分配一个 GUID。我想要一种方法可以派生一个 11 个字符、唯一、区分大小写的类似 YouTube 的 ID,例如 1_XmY09uRJ4 来自uuid 的十六进制字符串,看起来像 ae0a0c98-f1e5-11e1-9t2b-1231381dac60 我希望能够动态地将缩短的 ID 与十六进制匹配,反之亦然...
This is a custom schema type for Mongoose that allows storing and manipulating UUID (Universally Unique Identifier) values as buffers in MongoDB. It extends the existingUUIDschema type provided by Mongoose. Installation To use theUUIDSchemaType, you need to have Mongoose and theuuidpackage installed...