GH-1403: Implements Anthropic's prompt caching feature to improve tok… #4199
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This was referenced Aug 21, 2025
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Why add this to usermessage/abstract message? I though a chatoption would be sufficient. I'm concerned about having functionality in the message hiearchy that isn't universal. |
…tOptions - Add cacheControl field to AnthropicChatOptions with builder method - Create AnthropicCacheType enum with EPHEMERAL type for type-safe cache creation - Update AnthropicChatModel.createRequest() to apply cache control from options to user message ContentBlocks - Extend ContentBlock record with cacheControl parameter and constructor for API compatibility - Update Usage record to include cacheCreationInputTokens and cacheReadInputTokens fields - Update StreamHelper to handle new Usage constructor with cache token parameters - Add AnthropicApiIT.chatWithPromptCache() test for low-level API validation - Add AnthropicChatModelIT.chatWithPromptCacheViaOptions() integration test - Add comprehensive unit tests for AnthropicChatOptions cache control functionality - Update documentation with cacheControl() method examples and usage patterns Cache control is configured through AnthropicChatOptions rather than message classes to maintain provider portability. The cache control gets applied during request creation in AnthropicChatModel when building ContentBlocks for user messages. Original implementation provided by @Claudio-code (Claudio Silva Junior) See spring-projects@15e5026 Fixes spring-projects#1403 Signed-off-by: Soby Chacko <[email protected]>
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…en efficiency
This implementation follows Anthropic's prompt caching API which allows for more efficient token usage by caching frequently used prompts.
Original implementation provided by @Claudio-code (Claudio Silva Junior) See 15e5026
Fixes #1403