How can Redis implement sorting by grades and time?

In Redis, you can use sorted sets to achieve sorting by scores and time.

1. Add the students’ grades and timestamps as members and scores to a sorted set in Redis using the ZADD command.
2. Add scores of 80, 90, and 85 with corresponding timestamps of January 1st, January 2nd, and January 3rd to the list.
3. Retrieve ranking list in descending order based on scores using the ZREVRANGE command.
4. Get the range of items from scores starting at index 0 and ending at index 1.
5. This will return a ranked list of all members in the sorted set.
6. Get the members within a specified ranking range in descending order based on their scores using the ZREVRANGE command.
7. Retrieve the values stored in the list named “scores” starting from index 0 up until index 2.
8. This will return the top three members in the ordered set.
9. Use the ZRANGEBYSCORE command to retrieve members within a specific time range.
10. Retrieve the scores within the range of “2022-01-01 00:00:00” and “2022-01-03 23:59:59” using ZRANGEBYSCORE.
11. This will return the members within a specified time range in the ordered set.

By using the commands above, you can achieve sorting of scores and time in Redis.