Redis ??? ?? ????

Redis? ????? ??? ??? ??? ???? NoSQL ????????. Redis? ??? ???? ???? ??? ?? ???? ????. ??? Redis?? ?? ??? ??? ? ??? ??? ? ??.

??? ??? Redis?? ??? ?? ??? ???? ??? ????. ? ???? Python ??? Redis ??? ???? ???? ???? ???? ??? ?? ???.

1. Redis ?? ????

Python ???? Redis ??? ???? ???? redis ??? ???? ??. ??? ???? ???? ??? ????.

“`python

pip install redis

???? Redis ??? ???? ??? ????.

```python
import redis
redis_client = redis.StrictRedis(host='', port=, db=, password='')

2. ?? ??? ?? ???? ????

Redis?? Redis ??? `scan_iter()` ??? ???? Redis ??????? ?? ??? ? ??. ? ??? Redis ??????? ?? ?? ?? ????. ???? ???? ???? ?? ????? ?????.

“`python

def delete_redis_data():

cursor = ‘0’

batch_size = 5000 #batch_size ?? ??? Redis ???? ?? ?? ?? (?? 50 ??? 100).

while cursor != 0:

cursor, keys = redis_client.scan(cursor=cursor, count=batch_size)

if keys:

redis_pipe = redis_client.pipeline()

for key in keys:

redis_pipe.delete(key)

redis_pipe.execute()

3. ?? ?? ????

?? `delete_redis_data()` ??? ???? ?? ??? ??? ? ??.

```python
if __name__ == "__mn__":
    delete_redis_data()

4. ???

????? ???? ?????. Redis? ???? ?? `delete_redis_data()` ??? ?????.

“`python

redis_client.set(‘test_key1’, ‘test_value1’)

redis_client.set(‘test_key2’, ‘test_value2’)

delete_redis_data()

`delete_redis_data()` ??? ??? ? Redis ???????? ?? ?? ????? `test_key1`? `test_key2`? ????.

??

Redis?? ??? ?? ??? ??? ? Python ??? ??? ? ??. Redis ??? `scan_iter()` ??? ???? Redis ??????? ????, Python tube ??? ???? Redis ???? ?? ??? ? ??. ?? ?? Redis ???? ???? ????? ? ??.

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當(dāng)前題目：Redis ??? ?? ????（redis遠(yuǎn)程批量刪除）
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