Debug-action-cache < 2025 >

Instead of generic actions/cache , use the native caching mechanisms built directly into primary setup actions. For example, actions/setup-node , actions/setup-python , and actions/setup-go feature built-in, highly optimized cache input parameters that manage keys and pathing automatically.

Use a tool like action_analyzer or a simple JSON diff tool to compare the two logs.

Caching is not "set and forget." It is a living part of your infrastructure. Every time a dependency changes, a runner OS updates, or a new developer joins the team, your cache assumptions can break. debug-action-cache

The most effective way to debug action caches is by comparing execution logs between two builds 2.2.3 .

Debugging a cache requires understanding why it failed. GitHub Actions caches are immutable; once a cache is written to a specific key, it cannot be updated. Here are the most common root causes of cache issues: Issue A: The Cache Miss (False Negatives) Instead of generic actions/cache , use the native

Debugging Action Cache Misses in Bazel: A Comprehensive Guide

Some code generators include the current date/time in the header of the generated file. This invalidates the cache every single minute. Caching is not "set and forget

Self-hosted runners can persist caches on disk. debug-action-cache here means inspecting the runner's local drive.