lesson 1 of 4 · prompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastlesson 1 of 4 · prompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastlesson 1 of 4 · prompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastlesson 1 of 4 · prompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastlesson 1 of 4 · prompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastlesson 1 of 4 · prompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastlesson 1 of 4 · prompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastlesson 1 of 4 · prompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastlesson 1 of 4 · prompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastlesson 1 of 4 · prompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastlesson 1 of 4 · prompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes lastprompt caching correctly — the variable input goes last
Caching works on STABLE prefixes — content that is identical across calls. Which ONE piece above is NOT cache-eligible (it varies per call, so it can't be shared)?