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Prompt cache TTL of 5 minutes creates inconsistent cache hits
4/10 LowAnthropic's prompt caching has a 5-minute time-to-live, meaning low-traffic endpoints may not see consistent cache hits. Even minor whitespace changes invalidate cached prefixes, requiring exact matching across calls.
Collection History
Query: “What are the most common pain points with Anthropic API for developers in 2025?”3/30/2026
Prompt caching has a TTL. Cached prefixes expire after 5 minutes of inactivity. High-traffic endpoints benefit most. Low-traffic endpoints may not see cache hits consistently. ...Stale cache misses: Prefix changed slightly. Ensure cached prefix is identical across calls — even whitespace changes invalidate the cache.
Created: 3/30/2026Updated: 3/30/2026