BedrockCacheTTL

type BedrockCacheTTL =
  | "5m"
  | "1h"
  | string & {
};

Defined in: src/models/bedrock.ts:144

TTL durations accepted by Bedrock for prompt-cache checkpoints.

Bedrock currently accepts '5m' (default) and '1h'. The (string & {}) branch keeps autocomplete on the known values while letting callers pass any string forward — Bedrock validates the value server-side and rejects unsupported values with ValidationException, so this stays correct as AWS adds new TTL values without an SDK update.

Bedrock also requires checkpoint TTLs to be non-increasing across toolConfig → system → messages — setting a longer TTL on a later checkpoint than an earlier one will be rejected by the service.

See

https://docs.aws.amazon.com/bedrock/latest/APIReference/API_runtime_CachePointBlock.html