Coding practice.
- leetcode: leetcode.com
- itint: itint5.com
- lintcode: lintcode.com
Other resources
- https://systemdesigntutorial.com/
- https://www.hiredintech.com/: algorithm design, system design, soft skills
- 支付宝架构师眼中的高并发架构: https://mp.weixin.qq.com/s/6QdydqoHPVsY-gjgb92k6w)