关系型数据库架构演变 - noodles-v6/myfqa GitHub Wiki
- 单机阶段,app与db部署在同一机器上;
- db独立;
- 读写分离;
- 垂直拆分;
- 水平拆分;
小结:随着db架构的逐层演变,app的代码变动难度逐渐加大。
1 2 3 4 +------------+ +----------+ +---------+ +-+----------+ | | app + db | | app | +---------------> +-+----------+ +-+ +----------+ +---------+ | |db master c |-+ + | +------------+ | + + | +---------+ +-----------------+ | +---------> | db | +--->|db master | | +---------+ | +---------+| | | +-+--------+|| | | +-+--------+ ++| | | | slave +-+ | v 5 | +----------+ | +------------+ +-----------------+ +-+----------+ | +-+----------+ +-+ |db master cs+-+ +------------+