feat(cache): add LLM metadata caching for model and provider information #1456
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This was referenced Oct 17, 2025
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This was referenced Oct 17, 2025
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Extends the cache system to store and restore LLM metadata (model name and provider name) alongside cache entries. This allows cached results to maintain provenance information about which model and provider generated the original response. - Added LLMMetadataDict and LLMCacheData TypedDict definitions for type safety - Extended CacheEntry to include optional llm_metadata field - Implemented extract_llm_metadata_for_cache() to capture model and provider info from context - Implemented restore_llm_metadata_from_cache() to restore metadata when retrieving cached results - Updated get_from_cache_and_restore_stats() to handle metadata extraction and restoration - Added comprehensive test coverage for metadata caching functionalit
…, refactor LLMCallInfo instantiation
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Extends the cache system to store and restore LLM metadata (model name and provider name) alongside cache entries. This allows cached results to maintain provenance information about which model and provider generated the original response.
Changes
LLMMetadataDictandLLMCacheDataTypedDict definitions for type safetyCacheEntryto include optionalllm_metadatafieldextract_llm_metadata_for_cache()to capture model and provider info from contextrestore_llm_metadata_from_cache()to restore metadata when retrieving cached resultsget_from_cache_and_restore_stats()to handle metadata extraction and restorationDependencies
Part of Stack
This is PR 2/5 in the NeMoGuards caching feature stack.