[Feature]: Context Caching for Vertex AI

[DreamGenX]

The Feature

It looks like Gemini context caching does not work when using Vertex AI.
Doing a cursory search, it looks like this part would need to be implemented to support Vertex AI:

litellm/litellm/llms/vertex_ai_and_google_ai_studio/gemini/transformation.py

Line 392 in c73ce95

await context_caching_endpoints.async_check_and_create_cache(

Motivation, pitch

Context cachin is already supported using the Gemini API and it's a good way to reduce costs.

Twitter / LinkedIn details

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