What is redis server?

What is redis server?

The most common usage scenario of Redis is as a cache server for data caching. A major feature of cached data is that the data is time-sensitive. After the data is loaded into Redis for caching, it will be cached after a certain period of time. Or the data will expire according to a specific policy and then be deleted.

In Redis, there are the following two ways to automatically delete expired keys and maintain the timeliness of cached data:

1. Set the key expiration time;

2. Set Redis Memory size, (after the space occupied by the key value in Redis reaches the maximum memory, find the expired key to be deleted according to the key elimination strategy configured in the configuration file and then delete it)

For more Redis related knowledge, please visitRedis usage tutorial column!

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