| 123456789101112131415161718192021222324 | import redisfrom redis.connection import Connection, SSLConnectionredis_client = redis.Redis()def init_app(app):    connection_class = Connection    if app.config.get('REDIS_USE_SSL'):        connection_class = SSLConnection    redis_client.connection_pool = redis.ConnectionPool(**{        'host': app.config.get('REDIS_HOST'),        'port': app.config.get('REDIS_PORT'),        'username': app.config.get('REDIS_USERNAME'),        'password': app.config.get('REDIS_PASSWORD'),        'db': app.config.get('REDIS_DB'),        'encoding': 'utf-8',        'encoding_errors': 'strict',        'decode_responses': False    }, connection_class=connection_class)    app.extensions['redis'] = redis_client
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