Version: Next

API Quotas Configuration Template

Quota Configuration Template

This template demonstrates how to configure quotas using Lunar’s system. It includes examples for both fixed window and concurrent-based strategies. Users can define internal limits for more specific cases as needed.

note

File names for Lunar's YAML configurations don't need to follow a specific convention (e.g., quota.yaml). As long as the file is placed in the correct folder, Lunar will automatically detect and apply it.

/etc/lunar-proxy/quotas/{fileName}.yaml
quota:
  - id: MyQuota # Unique identifier for the quota
  filter: # Define filter conditions for this quota
    url: api.website.com/* # URL pattern to apply the quota
    headers: # Optional: Header-based filtering
      - key: x-lunar-consumer-tag # Header to filter on
        value: premium # Example value 1
      - key: x-lunar-consumer-tag # Header to filter on
        value: basic # Example value 2
  strategy: # Quota strategy definition
    fixed_window: # Fixed Window Strategy
      max: 1000 # Maximum requests allowed within the window
      interval: 24 # Duration of the time window
      interval_unit: hour # Unit of time for the interval (second/minute/hour/day/month)
      group_by_header: x-lunar-consumer-tag # Optional: Group by header value
  - id: MyQuota2 # Unique identifier for the second quota
    filter:
      url: api.otherwebsite.com/*
    strategy:
      concurrent: # Concurrent Strategy
        max_request_count: 50 # Maximum number of concurrent requests allowed

internal_limits: # Optional: Define nested child quotas within the main quota
  - id: MyChildQuota # Unique identifier for the child quota
    parent_id: MyQuota # Links the child quota to its parent
    filter:
      url: api.website.com/specific # URL pattern specific to the child quota
    strategy:
      fixed_window: # Strategy for managing child quota with a fixed window
        max: 500 # Maximum requests allowed within the child quota
        interval: 1 # Window duration for the child quota
        interval_unit: day # Unit of time for the interval (second/minute/hour/day/month)

  - id: PremiumQuota
    parent_id: MyQuota
    filter:
      headers:
        - key: x-lunar-consumer-tag
          value: premium
    strategy:
      allocation_percentage: 80 # Percentage allocation of the total requests
  - id: BasicQuota
    parent_id: MyQuota
    filter:
      headers:
        - key: x-lunar-consumer-tag
          value: basic
    strategy:
      fixed_window:
        max: 20000
        interval: 1
        interval_unit: day
      spillover:
        max: 100 # Enables carryover of unused quota to the next window

Key Components of the Quota Configuration

Field	Description	Mandatory/Optional	Example
`quota.id`	A unique identifier for the quota.	Mandatory	`MyQuota`
`filter.url`	The URL pattern that the quota applies to.	Mandatory	`api.website.com/*`
`filter.headers.key`	Optional header used for filtering requests.	Optional	`x-lunar-consumer-tag`
`filter.headers.value`	Value of the header to match for filtering.	Optional	`'premium'`
`strategy.fixed_window.max`	Maximum number of requests allowed within the window.	Mandatory (if used)	`1000`
`strategy.fixed_window.interval`	Time window duration for the quota.	Mandatory (if used)	`24`
`strategy.fixed_window.interval_unit`	Unit of time for the window (second, minute, hour, day, month).	Mandatory (if used)	`hour`
`strategy.concurrent.max_request_count`	Max concurrent requests allowed.	Mandatory (if used)	`50`
`fixed_window.group_by_header`	Group quota by the value of a specific header.	Optional	`x-lunar-consumer-tag`
`internal_limits.id`	Unique identifier for child quotas.	Optional	`MyChildQuota`
`internal_limits.parent_id`	Links the child quota to its parent quota.	Optional	`MyQuota`
`internal_limits.filter.url`	URL pattern that the child quota applies to.	Mandatory (if used)	`api.website.com/specific`
`internal_limits.strategy.fixed_window.max`	Maximum requests allowed within the child quota’s window.	Mandatory (if used)	`500`
`internal_limits.strategy.fixed_window.interval`	Time window duration for the child quota.	Mandatory (if used)	`1`
`internal_limits.strategy.fixed_window.interval_unit`	Unit of time for the window (second, minute, hour, day, month).	Mandatory (if used)	`day`
`internal_limits.strategy.allocation_percentage`	Percentage of total main quota allocated to a child quota.	Mandatory (if used)	`80`
`internal_limits.strategy.spillover.max`	Enables carryover of unused quota to the next window.	Optional	`100`

Quota Configuration Template​

Key Components of the Quota Configuration​

Quota Configuration Template

Key Components of the Quota Configuration