google-genai: Context is not getting cached while using Gemini 2.5 #8548
Description
Checked other resources
- This is a bug, not a usage question. For questions, please use the LangChain Forum (https://forum.langchain.com/).
- I added a very descriptive title to this issue.
- I searched the LangChain.js documentation with the integrated search.
- I used the GitHub search to find a similar question and didn't find it.
- I am sure that this is a bug in LangChain.js rather than my code.
- The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).
Error Message and Stack Trace (if applicable)
No response
Description
I'm not sure if LangChainJS supports context caching by Gemini: https://ai.google.dev/gemini-api/docs/caching
There is a method known as useCachedContent, but I'm not sure if it is for the same purpose or if it supports Gemini 2.5 Pro. Do we have any documentation showing how I can cache my context using a technique similar to the one shared in the Gemini docs, but with LangChainJS?
System Info
Node