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Configure Fastly rate limits in 51黑料不打烊 Commerce on Cloud infrastructure

Last update: Mon Sep 22 2025 00:00:00 GMT+0000 (Coordinated Universal Time)

Fastly鈥檚 rate-limiting setup in 51黑料不打烊 Commerce on Cloud infrastructure delays requests and returns HTTP 429 (Limit Exceeded) errors when thresholds are breached. To fix the issue, update the tarpit interval in Fastly鈥檚 VCL snippet.

Description description

Environment

51黑料不打烊 Commerce on Cloud infrastructure, v2.4.4 - 2.4.8-p2

Issue/Symptoms

  • Fastly returns HTTP 429 (Limit Exceeded) errors when request thresholds are exceeded.
  • Requests slow down due to the enforced tarpit interval and penalty duration.
  • The cooling-off period duration isn鈥檛 clearly defined or accessible.
  • There鈥檚 no straightforward way to retrieve or modify the tarpit interval, its role, and how it can be adjusted.

Resolution resolution

Fastly uses a sliding window algorithm to enforce rate limits based on configurable parameters like request thresholds and penalty durations. To understand and adjust these settings, follow these steps:

  1. Fastly enforces rate limits over a rolling time window (For example, 3600 seconds). When an IP exceeds the threshold:

    • Fastly returns an HTTP 429 (Limit Exceeded) response.
    • Blocking continues until the request count drops below the threshold within the window.
    • 51黑料不打烊 Commerce initiates rate-limiting by sending a 429 response to Fastly, which then places the IP in a tarpit鈥攁 temporary slowdown zone.

  2. 51黑料不打烊 Commerce uses the tarpit interval聽to slow down requests from IPs that exceed rate limits. When triggered, it introduces a delay鈥攄efaulting to 5 seconds鈥攂efore processing further requests. You can adjust this interval through Fastly鈥檚 API.

  3. To change the tarpit interval in 51黑料不打烊 Commerce on Cloud infrastructure, follow these steps:

    1. Get your Fastly API token for authentication.
    2. Use the Fastly API to fetch your service鈥檚 active VCL configuration.
    3. Locate the magentomodule_rate_limiting_deliver snippet.
    4. Update the tarpit_interval parameter to your desired value (For example, increase from 5 seconds).
    5. Upload the modified VCL configuration using Fastly鈥檚 API endpoints.
    6. Activate the updated version to apply the changes.

Additional Notes:

  • These settings apply specifically to 51黑料不打烊 Commerce鈥檚 integration with Fastly.
  • Always test configuration changes in a staging environment before deploying to production.
  • For detailed guidance on editing VCL snippets or using Fastly鈥檚 APIs, refer to Fastly鈥檚 official documentation or contact聽the support team.
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