specificationVersion: '0.1'
id: cloudflare-queues-rate-limits
name: Cloudflare Queues Rate Limits
description: Rate limits, throughput constraints, and quota boundaries for Cloudflare
  Queues. Exceeding throughput limits returns a 429 Too Many Requests error. Exceeding
  storage limits returns a Storage Limit Exceeded error. Limit increases can be requested
  via Cloudflare's official limit increase form.
url: https://developers.cloudflare.com/queues/platform/limits/
limits:
  - name: Queues per Account
    description: Maximum number of queues that can be created per Cloudflare account
    value: 10000
    unit: queues
    scope: account
  - name: Per-Queue Throughput
    description: Maximum message throughput per individual queue; exceeding this returns
      a 429 Too Many Requests error
    value: 5000
    unit: messages/second
    scope: queue
  - name: Maximum Message Size
    description: Maximum size of a single message including approximately 100 bytes
      of internal metadata overhead
    value: 128
    unit: KB
    scope: message
  - name: Message Retries
    description: Maximum number of retry attempts for a single message before it is
      dead-lettered or discarded
    value: 100
    unit: retries
    scope: message
  - name: Message Retention (Free)
    description: Fixed message retention period on the Workers Free plan; cannot be
      configured
    value: 24
    unit: hours
    scope: queue
    plan: Workers Free
  - name: Message Retention (Paid - Maximum)
    description: Maximum configurable message retention period on the Workers Paid
      plan
    value: 14
    unit: days
    scope: queue
    plan: Workers Paid
  - name: Message Retention (Paid - Minimum)
    description: Minimum configurable message retention period on the Workers Paid
      plan
    value: 60
    unit: seconds
    scope: queue
    plan: Workers Paid
  - name: Batch Send Limit (Messages)
    description: Maximum number of messages that can be sent in a single sendBatch()
      call
    value: 100
    unit: messages
    scope: request
  - name: Batch Send Limit (Size)
    description: Maximum total payload size for a single sendBatch() call
    value: 256
    unit: KB
    scope: request
  - name: Consumer Batch Size
    description: Maximum number of messages a consumer can receive in a single batch
      invocation
    value: 100
    unit: messages
    scope: consumer
  - name: Batch Wait Time
    description: Maximum time a queue will wait to fill a batch before delivering
      it to a consumer
    value: 60
    unit: seconds
    scope: queue
  - name: Per-Queue Backlog Storage
    description: Maximum total message storage per queue; exceeding this returns a
      Storage Limit Exceeded error
    value: 25
    unit: GB
    scope: queue
  - name: Concurrent Consumer Invocations
    description: Maximum number of concurrent consumer Worker invocations per queue
      for push-based consumers
    value: 250
    unit: concurrent invocations
    scope: queue
  - name: Consumer Wall-Clock Time
    description: Maximum wall-clock execution time per consumer invocation
    value: 15
    unit: minutes
    scope: invocation
  - name: Consumer CPU Time (Default)
    description: Default maximum CPU time per consumer invocation
    value: 30
    unit: seconds
    scope: invocation
  - name: Consumer CPU Time (Configurable Maximum)
    description: Maximum configurable CPU time per consumer invocation
    value: 5
    unit: minutes
    scope: invocation
  - name: Visibility Timeout (Pull Consumer)
    description: Maximum visibility timeout for HTTP pull consumers; messages become
      visible again after this period if not acknowledged
    value: 12
    unit: hours
    scope: consumer
  - name: Delivery Delay (Maximum)
    description: Maximum delay that can be applied to defer message delivery
    value: 24
    unit: hours
    scope: message
  - name: Free Tier Daily Operations
    description: Maximum free operations per day on the Workers Free plan before usage
      is blocked
    value: 10000
    unit: operations/day
    scope: account
    plan: Workers Free
  - name: Paid Tier Monthly Included Operations
    description: Operations included per month before per-operation overage billing
      on the Workers Paid plan
    value: 1000000
    unit: operations/month
    scope: account
    plan: Workers Paid