GitHub Actions / GitHub Actions

GitHub Actions cache upload does not handle 429 — retry loops until job fails

Fix GitHub Actions cache upload retry logic for transient 429 rate-limit errors returned by the cache service during post-job cleanup Includes evidence for GitHub Actions troubleshooting demand.

Source-backed Last updated May 19, 2026 1 source Needs local verification

Category: GitHub Actions
Error signature: Cache service responded with 429 during upload chunk — action/setup-java cleanup throws unhandled error
Quick fix: Reduce request pressure, check quota or plan limits, and retry with backoff instead of immediate repeated requests.
Updated: May 19, 2026
Verification status: Source-backed
Evidence: 1 public source URL

Before you change production

This page includes public source URLs in the imported troubleshooting record. Compare those references with your version and environment before applying changes.

Reproduce the smallest failing action and save non-secret logs before changing configuration.
Check versions for GitHub Actions, related SDKs, package managers, CI runners, and hosting providers.
Change one setting or dependency at a time, then rerun the same failing command or request.
Avoid destructive commands, credential rotation, billing changes, or security relaxations without a rollback plan.

What this error means

Cache service responded with 429 during upload chunk — action/setup-java cleanup throws unhandled error is a GitHub Actions failure pattern reported for developers trying to fix github actions cache upload retry logic for transient 429 rate-limit errors returned by the cache service during post-job cleanup. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

Actions toolkit #1589 (2023-11-30): GitHub Actions cache upload receives 429 during chunk upload, no retry/backoff implemented. Blocks CI/CD pipelines for teams with large caches. Category: GitHub Actions. Still actively impacting — this is an upstream service-level pattern.

Common causes

Actions toolkit #1589 (2023-11-30): GitHub Actions cache upload receives 429 during chunk upload, no retry/backoff implemented. Blocks CI/CD pipelines for teams with large caches. Category: GitHub Actions. Still actively impacting — this is an upstream service-level pattern.

Quick fixes

Confirm the exact error signature matches Cache service responded with 429 during upload chunk — action/setup-java cleanup throws unhandled error.
Check the GitHub Actions account, local tool state, and provider configuration involved in the failing workflow.
Reduce request pressure, check quota or plan limits, and retry with backoff instead of immediate repeated requests.

Platform/tool-specific checks

Verify the command, editor, extension, or API client that produced the error.
Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

Capture the exact error message and the command, editor action, or request that triggered it.
Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
Review the source evidence below and compare it with your environment.
Apply one change at a time and rerun the smallest failing action.
Keep the working fix documented for the team or deployment environment.

How to prevent it

Keep provider/tool configuration documented.
Record non-secret diagnostics such as tool version, provider name, model name, and command path.
Add a lightweight check before CI or production workflows depend on the tool.

Diagnostic flow for this page

Match Cache service responded with 429 during upload chunk — action/setup-java cleanup throws unhandled error exactly before applying the quick fix.
Compare the failing environment with GitHub Actions versions, account scope, provider settings, and deployment context.
Check the listed common causes in order, starting with the cause that best matches your logs.
Use the evidence status below to decide whether to confirm against public sources or official documentation.
Apply one reversible change, rerun the smallest failing action, and keep rollback notes.

FAQ

What does Cache service responded with 429 during upload chunk — action/setup-java cleanup throws unhandled error mean in GitHub Actions?

Cache service responded with 429 during upload chunk — action/setup-java cleanup throws unhandled error indicates the workflow described by "GitHub Actions cache upload does not handle 429 — retry loops until job fails" failed in a GitHub Actions context. Start by confirming the exact signature and the component that emitted it.

What should I check first for Cache service responded with 429 during upload chunk — action/setup-java cleanup throws unhandled error?

Check whether this cause matches your environment: Actions toolkit #1589 (2023-11-30): GitHub Actions cache upload receives 429 during chunk upload, no retry/backoff implemented. Blocks CI/CD pipelines for teams with large caches. Category: GitHub Actions. Still actively impacting — this is an upstream service-level pattern.

Is the Cache service responded with 429 during upload chunk — action/setup-java cleanup throws unhandled error guidance source-backed?

The "GitHub Actions cache upload does not handle 429 — retry loops until job fails" page is labeled source-backed. It has 1 public source URL from github.com, so use that evidence status when deciding how much additional verification you need.

When should I avoid the quick fix for Cache service responded with 429 during upload chunk — action/setup-java cleanup throws unhandled error?

For "GitHub Actions cache upload does not handle 429 — retry loops until job fails", avoid applying "Reduce request pressure, check quota or plan limits, and retry with backoff instead of immediate repeated requests." when the error text differs, the affected version or provider is different, or the change would touch credentials, billing, DNS, production deploy settings, or irreversible data.

What should I collect before debugging Cache service responded with 429 during upload chunk — action/setup-java cleanup throws unhandled error?

For "GitHub Actions cache upload does not handle 429 — retry loops until job fails", collect the failing GitHub Actions command or request, non-secret configuration, versions, timestamps, request IDs when available, and the smallest reproduction that still triggers the signature.