How Does a Function Access Redis?¶
Perform the following operations:
Check whether the Redis instance is deployed in a VPC.
If the Redis instance is deployed in a VPC, configure the same VPC and subnet as the Redis instance for the function by referring to section "Configuring VPC Access".
If the Redis instance is built on a public network, obtain its public IP address.
Compile code for connecting a function to the Redis instance.
FunctionGraph has integrated third-party library redis-py in its Python 2.7 and Python 3.6 runtimes. Therefore, you do not need to download any other Redis libraries.
# -*- coding:utf-8 -*- import redis def handler (event, context): r = redis.StrictRedis(host="host_ip",password="passwd",port=6379) print(str(r.get("hostname"))) return "^_^"Note
If the function fails to access to the Redis instance on a public network, perform the following operations:
Modify the redis.conf file to allow access from any IP addresses.
Set a password for accessing the Redis instance in the redis.conf file.
Disable the firewall.
If the function needs to access DCS APIs, create an agency and grant required permissions.