APISIX variable

Besides Nginx variable, APISIX also provides additional variables.

List in alphabetical order:

Variable Name	Origin	Description	Example
balancer_ip	core	the IP of picked upstream server	1.1.1.1
balancer_port	core	the port of picked upstream server	80
consumer_name	core	username of consumer
graphql_name	core	the operation name of GraphQL	HeroComparison
graphql_operation	core	the operation type of GraphQL	mutation
graphql_root_fields	core	the top level fields of GraphQL	["hero"]
mqtt_client_id	mqtt-proxy	the client id in MQTT protocol
route_id	core	id of route
route_name	core	name of route
service_id	core	id of service
service_name	core	name of service
redis_cmd_line	Redis	the content of Redis command
rpc_time	xRPC	time spent at the rpc request level

You can also register your own variable.