feat: Adding PROXY_CACHE_USE_STALE env variable#438

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mhbahmani wants to merge 4 commits intonginx:mainfrom

Commits on Aug 13, 2025

Add PROXY_CACHE_USE_STALE environment variable
MohammadHosein Bahmani
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Set proxy_cache_use_stale with PROXY_CACHE_USE_STALE environment variable
MohammadHosein Bahmani
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Add PROXY_CACHE_USE_STALE variable to docs
MohammadHosein Bahmani
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Add PROXY_CACHE_USE_STALE
MohammadHosein Bahmani
committed