The GitLab CI Cache Optimizer analyzes your GitLab CI/CD pipeline cache usage to identify optimization opportunities that reduce build times and storage costs. Using the GitLab Pipelines API v4, it fetches job execution data including cache hit/miss statistics and artifact sizes.

The agent parses .gitlab-ci.yml files to evaluate cache configurations, checking for common issues like overly broad cache keys that cause frequent invalidation, missing cache:key:files directives for dependency-based caching, and redundant cache paths that waste storage. It analyzes cache effectiveness by comparing job durations with and without cache hits.

Optimization recommendations include implementing cache:key:files with lock file references for deterministic caching, splitting caches by job stage to improve hit rates, configuring cache:when policies for failed builds, and setting appropriate cache:untracked and cache:unprotect options. The agent can generate optimized .gitlab-ci.yml cache blocks and estimate time savings based on historical pipeline data. Supports GitLab SaaS and self-managed instances.