python导入导出redis数据的实现
目录
- 一.导出redis某个库的数据
- 使用python向Redis批量导入数据
- 二.导入redis某个库的数据
注:以String类型为例
一.导出redis某个库的数据
import redis import json file_path = "why.json" redis_conn = redis.Redis(host="192.168.1.123", port=6387, password="123zxcv", db=2, decode_responses=True) data_keys = redis_conn.keys() all_data = {} for i in data_keys: all_data[i] = json.loads(redis_conn.get(i)) file_object = open(file_path, 'w', encoding="utf8") json.dump(all_data, file_object, ensure_ascii=False) file_object.close()
使用python向Redis批量导入数据
使用pipeline进行批量导入数据。包含先使用rpush插入数据,然后使用expire改动过期时间
class Redis_Handler(Handler): def connect(self): #print self.host,self.port,self.table self.conn = Connection(self.host,self.port,self.table) def execute(self, action_name): filename = "/tmp/temp.txt" batch_size = 10000 with open(filename) as file: try: count = 0 pipeline_redis = self.conn.client.pipeline() for lines in file: (key,value) = lines.split(',') count = count + 1 if len(key)>0: pipeline_redis.rpush(key,value.strip()) if not count % batch_size: pipeline_redis.execute() count = 0 #send the last batch pipeline_redis.execute() except Exception: print 'redis add error'
二.导入redis某个库的数据
import redis import json file_path = "why.json" redis_conn = redis.Redis(host="192.168.1.123", port=6387, password="123zxcv", db=1, decode_responses=True) file_object = open(file_path, 'r', encoding="utf8") all_data = json.load(file_object) for key in all_data: redis_conn.set(key, json.dumps(all_data[key], ensure_ascii=False)) file_object.close()
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