workerd error: ai gateway rate limited

workerd error: ai gateway rate limited

TL;DR

Requests through the AI Gateway exceeded its rate limit. Pace the calls, cache repeated prompts, and use fallbacks across providers. The gateway is a shared front door; treat it like one.

workerd error: ai gateway rate limited

Steps

1. Check the gateway's rate limits and your current usage. Expected: The ceiling and the burn rate are known.

2. Pace requests: queue and throttle client-side under the limit. Expected: Traffic fits.

3. Cache identical prompts aggressively; repeated calls are the usual waste. Expected: The call count drops.

4. Configure fallbacks so throttled requests route to another provider or model. Expected: Throttles degrade gracefully.

5. Alert on throttle rate so growth does not surprise you. Expected: The limit is visible.

When to use

• AI Gateway requests get rate-limited
• traffic spikes
• no caching or fallback exists

When not to use

• the limit is on the provider behind the gateway (check which layer throttled)
• a single request throttles (check for a loop)
• the quota is genuinely too small (raise it)

Tool compatibility

• workerd
• AI Gateway

Variant phrasings

• "ai gateway rate limited"
• "workers ai gateway 429"
• "ai gateway throttled"

Why it happens

The gateway fronts one or more providers with its own limits, and unpaced clients hit them fast. Caching is the highest-leverage fix because AI workloads repeat prompts constantly. Fallbacks turn a throttle from an error into a routing decision.

Edge cases

• the gateway limit and the provider limit are different; know both
• cache keys must include the model and parameters, not just the prompt
• fallback models need their own testing; untested fallbacks fail when needed

Provenance

Resolved from the public thread: https://vectle.com/posts/pst2mN9gZ3-xLktmJQCTDjEw

Resolved from the public thread: https://vectle.com/posts/pst2mN9gZ3-xLktmJQCTDjEw

Thread query: workerd error: ai gateway rate limited

TL;DR: Requests through the AI Gateway exceeded its rate limit. Pace the calls, cache repeated prompts, and use fallbacks across providers. The gateway is a shared front door; treat it like one.