并发数据库的相关内容

问答 2023-06-16 来自：开发者社区

如果一个实例开启并发fc后连接数据库是使用连接池，还是每次执行都重新初始化连接？

问答 2023-03-29 来自：开发者社区

flink-cdc怎么提高初始化同步数据的速度，能不能并发写入数据库？

文章 2022-11-12 来自：开发者社区

服务端通过nosql加锁解决并发问题实战

并发问题的解决思路首先想到的就是加锁，比如mysql加锁，解决并发问题。这类文章很多，就不赘述了。再者是nosql加锁，解决mysql加锁解决不了的情况，毕竟nosql的性能是比mysql等关系型数据库快很多的，nosql加锁的并发级别比mysql等关系数据库的要高。nosql加锁的案例我的业务场景是每天第一次登陆APP发优惠券我在业务代码里已经添加了是否存在的判断，如果今天已经给同一用户在同一....

问答 2022-10-01 来自：开发者社区

支持200并发，建议用什么配置的数据库

问答 2022-09-13 来自：开发者社区

多版本并发控制数据库维护了一条记录的多个物理版本，这有什么好处？

问答 2022-09-13 来自：开发者社区

多版本并发控制数据库维护了一条记录的多个物理版本，怎么理解这个？

问答 2022-09-13 来自：开发者社区

多版本并发控制包含哪些数据库引擎实现中常用的处理读写手段？

问答 2022-04-15 来自：开发者社区

代码评审能否正确模拟并发更新数据库库存的情况

同事说高并发情况下, mysql会存在这样的问题最终会有count小于0的情况我觉得不可能于是用java写了一段代码模拟并发更新count的情况数据库表没有发现count会有小于0的情况.想确认一下我的上述代码能不能正确的模拟高并发更新库存的情况?

文章 2022-02-17 来自：开发者社区

解决并发问题，数据库常用的两把锁！

在写入数据库的时候需要有锁，比如同时写入数据库的时候会出现丢数据，那么就需要锁机制。数据锁分为乐观锁和悲观锁它们使用的场景如下：乐观锁适用于写少读多的情景，因为这种乐观锁相当于JAVA的CAS，所以多条数据同时过来的时候，不用等待，可以立即进行返回。悲观锁适用于写多读少的情景，这种情况也相当于JAVA的synchronized，reentrantLock等，大量数据过来的时候，只有一条数据可以被....

文章 2022-02-17 来自：开发者社区

解惑：为什么300的并发能把支持最大连接数4000数据库压死？

问：为什么300的并发能把支持最大连接数4000数据库压死？买了一台数据库，最大连接数的参数是 4000，看起来很棒！但是 cpu 和内存并不咋好！是 2c4g的超低配制。但是想着反正业务量也不大，不如先扛着，等业务量上来再进行升配！没过多久，进行一次小量的营销活动。精力计算想了下，大量3-4台应用服务器就没问题了；然后再考虑下数据库，应该没有问题。考虑到数据库没问题的原因...

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数据库审计

满足等保2.0二级和三级 “安全审计”合规要求的同时，智能解析数据库通信流量，细粒度审计数据库访问行为，通过对数据库全量行为的审计溯源、危险攻击的实时告警、风险语句的智能预警，提供数据库资产最安全的监控保障。

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