SpringBoot study notes _Mysql and Redis transactions

One, Mysql and Redis error reporting mechanism

When adding existing data in mysql:

dataRepository.save(data);

An error is reported: Duplicate entry'data' for key'xxx'.

When adding existing data in redis:

redisService.setValue(data);

No content will be added, and no errors will be reported.

Two, add binding transactions to mysql and redis data operations

First open the transaction function in RedisService:

private void initStringRedisTemplate(){
    stringRedisTemplate.setKeySerializer(keySerializer);
    stringRedisTemplate.setHashKeySerializer(keySerializer);
    stringRedisTemplate.setEnableTransactionSupport(true); // 开启事务功能
}

Then add comments on mysql and redis data operations:

@Transactional(rollbackFor = Exception.class)

At this time, if an error is reported during the operation of the mysql database, the redis data that was previously operated will also be rolled back.