Are you familiar with redis cache of highly paid programmers & interview questions series 114? How are redis keys designed? Are you familiar with the memory obsolescence mechanism?

One . Interview questions and Analysis

1. Interview questions of the day

Redis Are you familiar with caching ？

What are the caching strategies ？

In the cache key How to design ？

Redis in key What is the expiration time of ？

Redis Of key What to do if it fails , When will it fail ？

Do you understand the memory elimination mechanism ？

What are the memory elimination strategies ？

2. Problem analysis

In the previous article , Yige I told you ,Redis An important application scenario of is that caching operations can be performed , So cache is also a high-frequency test site for our interview . When we go to the interview , Interviewers often ask Redis How to implement caching ？ On cache key How to design ？ What is the potential of caching