java unique id generator

Service, distributed has become the first choice for system development, high concurrency operation in the data storage, need a set of ID generator services to ensure the distribution of global uniqueness, to ensure that the system's order creation,

When the server system is developed, in order to adapt to the request of large data concurrency, we often need to asynchronous storage of data, especially in the distributed system, this time can not wait to insert the database returned to take the

Run MyBatis Generator using maven (Running MyBatis Generator with maven)The beautiful Life of the Sun Vulcan (http://blog.csdn.net/opengl_es)This article follows "Attribution-non-commercial use-consistent" authoring public agreementReprint Please

About MyBatis GeneratorMyBatis Generator (MBG) is a MyBatis code generator MyBatis and IBATIS. He can generate MyBatis versions of the code, and Ibatis 2.2.0 version of the code after. He can introspect the tables (or tables) of the database and

Liu Bing, nickname, open source technology enthusiasts, high performance Redis middleware Nredis-proxy author, the current research direction for Java Middleware, micro-services and other technologies. first, what is the distributed generator We

The originality of zero reprint please indicate the original source, thank you! OriginWhy do you suddenly talk about distributed unique IDs? The reason is recently in preparation for the use of ROCKETMQ, see the official website introduction:In

Java UUID Generator (JUG), uuidjug UG is a Java-only UUID generator. UUID refers to the number generated on a machine, which ensures that all machines in the same time and space are unique. Generally, the platform provides APIs for UUID generation.

Generally, Hibernate recommends defining an identifier attribute for a persistence class to uniquely identify a persistence instance.The identity attribute must be mapped to the primary key of the underlying data table. Identifier PropertyPassThe

An optional sub-element is the name of a Java class, which is used to generate a unique identifier for the persistence class instance. If the generator instance requires some configuration values or initialization parameters, use Element. For

The database has self-growth fields, but the self-growth fields have their own limitations. Some databases do not support self-growth. In the development process, some customer businesses need to generate business process numbers, and simple numbers