Sokudo
Takeaway
The mental model
Reuse an identical prefix.
Compute only what changed.
Token cache hits turn repeated context from recurring prefill work into reusable model state.
Before shipping
✓ Stable prefix is first
✓ Serialization is deterministic
✓ Hit rate and TTFT are measured
✓ Cold-cache behavior is acceptable
✓ Isolation and retention are understood
Best fit: agents, RAG, long system prompts, tool-heavy assistants, and repeated multi-turn workflows.