Introduction to the singleton implementation of Python using redis pool-Python Tutorial-php.cn

Introduction to the singleton implementation of Python using redis pool

高洛峰

Release： 2017-03-06 13:51:44

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The example of this article describes a singleton implementation method of using redis pool in Python. Share it with everyone for your reference, the details are as follows:

In order to adapt to the scenario where multiple redis instances share the same connection pool, it can be implemented similar to the following singleton method:

import redis
class RedisDBConfig:
  HOST = &#39;127.0.0.1&#39;
  PORT = 6379
  DBID = 0
def operator_status(func):
  &#39;&#39;&#39;&#39;&#39;get operatoration status
  &#39;&#39;&#39;
  def gen_status(*args, **kwargs):
    error, result = None, None
    try:
      result = func(*args, **kwargs)
    except Exception as e:
      error = str(e)
    return {&#39;result&#39;: result, &#39;error&#39;: error}
  return gen_status
class RedisCache(object):
  def __init__(self):
    if not hasattr(RedisCache, &#39;pool&#39;):
      RedisCache.create_pool()
    self._connection = redis.Redis(connection_pool = RedisCache.pool)
  @staticmethod
  def create_pool():
    RedisCache.pool = redis.ConnectionPool(
        host = RedisDBConfig.HOST,
        port = RedisDBConfig.PORT,
        db  = RedisDBConfig.DBID)
  @operator_status
  def set_data(self, key, value):
    &#39;&#39;&#39;&#39;&#39;set data with (key, value)
    &#39;&#39;&#39;
    return self._connection.set(key, value)
  @operator_status
  def get_data(self, key):
    &#39;&#39;&#39;&#39;&#39;get data by key
    &#39;&#39;&#39;
    return self._connection.get(key)
  @operator_status
  def del_data(self, key):
    &#39;&#39;&#39;&#39;&#39;delete cache by key
    &#39;&#39;&#39;
    return self._connection.delete(key)
if __name__ == &#39;__main__&#39;:
  print RedisCache().set_data(&#39;Testkey&#39;, "Simple Test")
  print RedisCache().get_data(&#39;Testkey&#39;)
  print RedisCache().del_data(&#39;Testkey&#39;)
  print RedisCache().get_data(&#39;Testkey&#39;)

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