Limit Count | APISIX & API7 API Gateway Docs

Parameters

See plugin common configurations for configuration options available to all plugins.

This plugin supports referencing parameter values from environment variables using the env:// prefix, or from a secret manager, such as HashiCorp Vault’s KV secrets engine, using the secret:// prefix. For more information, see environment variables in plugin and secrets.

count
integer
required
vaild vaule:
greater than 0
The maximum number of requests allowed within a given time interval.
time_window
integer
required
vaild vaule:
greater than 0
The time interval corresponding to the rate limiting count in seconds.
key_type
string
default: var
vaild vaule:
var, var_combination, or constant
The type of key.
If the key_type is var, the key is interpreted a variable.
If the key_type is var_combination, the key is interpreted as a combination of variables.
If the key_type is constant, the key is interpreted as a constant.
key
string
default: remote_addr
The key to count requests by.
If the key_type is var, the key is interpreted a variable. The variable does not need to be prefixed by a dollar sign ($). See built-in variables for avaialble variables.
If the key_type is var_combination, the key is interpreted as a combination of variables. All variables should be prefixed by dollar signs ($). For example, to configure the key to use a combination of two request headers custom-a and custom-b, the key should be configured as $http_custom_a $http_custom_b.
If the key_type is constant, the key is interpreted as a constant value.
rejected_code
integer
default: 503
vaild vaule:
between 200 and 599 inclusive
The HTTP status code returned when a request is rejected for exceeding the threshold.
rejected_msg
string
vaild vaule:
any non-empty string
The response body returned when a request is rejected for exceeding the threshold.
policy
string
default: local
vaild vaule:
local, redis, or redis-cluster
The policy for rate limiting counter. If it is local, the counter is stored in memory locally. If it is redis, the counter is stored on a Redis instance. If it is redis-cluster, the counter is stored in a Redis cluster.
allow_degradation
boolean
default: false
If true, allow APISIX to continue handling requests without the plugin when the plugin or its dependencies become unavailable.
show_limit_quota_header
boolean
default: true
If true, include X-RateLimit-Limit to show the total quota and X-RateLimit-Remaining to show the remaining quota in the response header.
group
string
vaild vaule:
non-empty
The group ID for the plugin, such that routes of the same group can share the same rate limiting counter.
redis_host
string
The address of the Redis node. Required when policy is redis.
redis_port
integer
default: 6379
vaild vaule:
greater than or equal to 1
The port of the Redis node when policy is redis.
redis_username
string
The username for Redis if Redis ACL is used. If you use the legacy authentication method requirepass, configure only the redis_password. Used when policy is redis.
redis_password
string
default: 6379
The password of the Redis node when policy is redis or redis-cluster.
redis_database
integer
default: 0
vaild vaule:
greater than or equal to 0
The database number in Redis when policy is redis.
redis_ssl
boolean
default: false
If true, use SSL to connect to Redis cluster when policy is redis.
redis_ssl_verify
boolean
default: false
If true, verify the server SSL certificate when policy is redis.
redis_timeout
integer
default: 1000
vaild vaule:
greater than or equal to 1
The Redis timeout value in milliseconds when policy is redis or redis-cluster.
redis_cluster_nodes
array[string]
The list of the Redis cluster nodes with at least two addresses. Required when policy is redis-cluster.
redis_cluster_name
string
The name of the Redis cluster. Required when policy is redis-cluster.
redis_cluster_ssl
boolean
default: false
If true, use SSL to connect to Redis cluster when policy is redis-cluster.
redis_cluster_ssl_verify
boolean
default: false
If true, verify the server SSL certificate when policy is redis-cluster.
sync_interval
number
default: -1
vaild vaule:
greater than or equal to 0.1, or the default -1
The frequency of synchronizing counter data to Redis. Available only in Enterprise.
The sync_interval value should be smaller than time_window. A value of 1 results in synchronizing counter data every second. A value of -1 yields no change in synchronizing behaviour, i.e. counter data will be synchronized for each request.

Parameters​

Parameters