snowflake-uid | Distributed UID generator based on snowflake algorithm

Download the project and import This project haven't post to maven repo, so please download/clone this project and run "mvn install" to install it to local maven repo.
Add maven dependency to project <dependency> <groupId>net.xdevelop</groupId> <artifactId>snowflake-uid</artifactId> <version>1.0.0</version> </dependency>
Init the bean @Configuration public class UIDConfig { @Bean public SnowflakeUidGenerator customerUidGenerator() { long workerId = SnowflakeUidGenerator.getWorkerIdByIP(24); return new SnowflakeUidGenerator(workerId); } // init multiple uid generators for different DB tables @Bean public SnowflakeUidGenerator orderUidGenerator() { long workerId = SnowflakeUidGenerator.getWorkerIdByIP(24); return new SnowflakeUidGenerator(workerId); } }
Generate the uid @Component public class CustomerService { @Autowired CustomerMapper mapper; @Autowired @Qualifier("customerUidGenerator") SnowflakeUidGenerator uidGenerator; public void addCustomer(Customer customer) { customer.setCustomerId(uidGenerator.getUID()); long curTime = System.currentTimeMillis(); customer.setCreatedDate(curTime); customer.setLastModifiedDate(curTime); mapper.insert(customer); } }
Optional: customize the generator @Configuration public class UIDConfig { @Bean public SnowflakeUidGenerator customerUidGenerator() { long workerId = SnowflakeUidGenerator.getWorkerIdByIP(16); String baseDate = "2018-08-01"; int timeBits = 32; int workerBits = 16; int seqBits = 15; return new SnowflakeUidGenerator(workerId, baseDate, timeBits, workerBits, seqBits); } }
This project haven't post to maven repo, so please download/clone this project and run "mvn install" to install it to local maven repo.