# 遍历数据库中的所有键
for key in db:
# 忽略已过期的键
if key.is_expired():continue
# 根据键的类型对键进行重写
if key.type == String:
rewrite_string(key)
elif key.type == List:
rewrite_list(key)
elif key.type == Hash:
rewrite_hash(key)
elif key.type == Set:
rewrite_set(key)
elif key.type == SortedSet:
rewrite_sorted_set(key)
# 如果键带有过期时间,那么过期时间也要被重写
if key.have_expire_time():
rewrite_expire_time(key)
f.close()
def rewrite_string(key):
# 使用GET命令获取字符串键的值
value = GET(key)
# 使用SET命令重写字符串键
f.write_command(SET,key,value)
def rewrite_list(key):
# 使用LRANGE命令获取列表键包含的所有元素
item1,item2,...,itemN = LRANGE(key,0,-1)
# 使用RPUSH命令重写列表键
f.write_command(RPUSH,key,item1,item2,....,itemN)
def rewrite_hash(key):
field1,value1,field2,value2,...,fieldN,valueN = HGETALL(key)
f.write_command(HSET,key,field1,value1,field2,value2,...,fieldN,valueN)
def rewrite_set(key):
elem1,elem2,...,elemN = SMEMBERS(key)
f.write_command(SADD,key,elem1,elem2,...,elemN)
def rewrite_sorted_set(key):
&