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This article "Redis serial generation sequence coding method how to achieve" most people do not understand, so the editor summarized the following content, detailed, clear steps, with a certain reference value, I hope you can read this article can have a harvest, let's take a look at this "Redis serial generation sequence coding method how to achieve" article it.

Scenario: for distributed and concurrent environments, the problem of repetitive coding generation is easy to occur

Features of the scheme: serial operation can avoid blocking and locking, and the processing efficiency is higher.

Concrete solution

Private final static String ENTERPRISE_CODE = "enterpriseCode"; @ Resourceprivate RedisTemplate redisTemplate;private String generateCode () {String code; if (! redisTemplate.hasKey (ENTERPRISE_CODE)) {/ / Mybatis-Plus query database maximum enterprise code EnterprisePO enterprise = enterpriseService.getOne (Wrappers.lambdaQuery () .orderByDesc (EnterprisePO::getCode) .last ("limit 1")) / / caching enterprise code if (ObjectUtils.isNotEmpty (enterprise)) {/ / set to avoid concurrent repetition if key does not exist. Set,setIfAbsent () belongs to atomic operation redisTemplate.opsForValue (). SetIfAbsent (ENTERPRISE_CODE, Long.valueOf (enterprise.getCode () / / you can also set the key expiration time, which is set here to 1 day / / redisTemplate.opsForValue () .setIfAbsent (ENTERPRISE_CODE, Long.valueOf (enterprise.getCode ()), 1, TimeUnit.DAYS);}} / / cache the latest encoding incrementally Long number = redisTemplate.opsForValue () .increment (ENTERPRISE_CODE, 1L) / / d means to retain 6 digits, less than 6 digits preceded by 0 code = String.format ("d", number); return code;} above is about "how to achieve sequential coding by Redis serial generation". I believe we all have some understanding. I hope the content shared by the editor will be helpful to you. If you want to know more about the relevant knowledge, please pay attention to the industry information channel.

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