How to check if redis connection is available when server starts running in django rest framework and return the error response if not connected

Question

I'm doing multiple API calls but in each API call I'm checking if redis connection is available. showing only one of the API calls below.

def check_redis_conn():

    redis_exists = RedisCache.is_redis_available()
    if redis_exists is True:
        set_Data = RedisCache.set_data("message", "This is redis Test")
        return True
    else:
        return redis_exists


def hello_vortex(request):
    is_redis_connected = check_redis_conn()
    if is_redis_connected is True:
        data = {'Description': 'This is the sample API call', 'version': 1.0}
        return JsonResponse{data,safe=False}
    else:
        return is_redis_connected

RedisCache class:

@classmethod
    def set_connect(cls):
        try:
            redis_instance = redis.StrictRedis(
            host='127.0.0.1',
            port=6379,
            )

    @classmethod
    def get_conn(cls):
        try:
            cls.redis_instance = cls.set_connect()
            return cls.redis_instance
        except Exception as e:
            return JsonResponse{'message':'Error while connecting', safe=False}

    @classmethod
    def is_redis_available(cls):
        try:
            isConn = cls.get_conn()
            isConn.ping()
            return True
        except Exception as e:
            return JsonResponse{'message':'Error while connecting', safe=False}

How can I check the redis connection only once when the server starts and return the Json Response on the server if the connection is not available.

Answer 1

You can ping the server and check it. If you are using any client, jedis or redison you have ping method to check the connection