Upgrade: using Redis 7 as redis cache

[AlexStocks]

Which PikiwiDB functionalities are relevant/related to the feature request?

No response

Description

Now we use Redis 4 https://github.com/pikiwidb/rediscache as Redis cache.

Proposed solution

Using Redis 7

Alternatives considered

Using Redis 7

[AlexStocks]

at present redis version: 4.0.14;
target redis version: https://github.com/redis/redis/releases/tag/7.2.3
members: chengbo & chenfengtao

redis cache lib: https://github.com/pikiwidb/rediscache 尽量使用 redis 7 的代码
pika 中与 rediscache 相关的代码：pika redis cache adapter https://github.com/OpenAtomFoundation/pika/tree/unstable/src/cache

you should check: whether this work is useless or useful.

[AlexStocks]

chengbo:

1 db.c object.c 当前的代码和 4.0.14 相比，redis 对这两个文件改动比较大；

[chejinge]

#2297

[clearocean621]

pikiwidb/rediscache#7