perf: Add DI container caching for faster CLI startup#1289
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This was referenced Jan 23, 2026
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Cache the compiled Symfony DI container to /tmp/guides-container-cache/. On subsequent runs, loads pre-compiled PHP class instead of rebuilding the entire container (config parsing, service registration, compilation). Cache key includes vendor dir, working dir, extensions, and configs to ensure cache invalidation when configuration changes. See https://cybottm.github.io/render-guides/ for benchmark data.
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Summary
Caches the compiled Symfony DI container to
/tmp/guides-container-cache/for faster CLI startup times.Changes
Performance Impact
Container compilation is skipped on subsequent runs, reducing startup time. Most beneficial for development workflows with frequent CLI invocations.
See Performance Analysis Report for detailed benchmarks.
Related PRs
All PRs can be merged independently in any order.