Design for Cache Hits
Sokudo
Engineering Playbook

Make the stable prefix boringly consistent

1

Order stable → dynamic

System prompt, tools, policies, long docs first; user-specific data last.

2

Canonicalize serialization

Freeze ordering, whitespace, JSON shape, and document delimiters.

3

Version prompt templates

Roll out intentionally and observe the temporary cold-cache impact.

4

Batch similar workloads

Temporal locality improves the chance entries remain warm.

5

Protect isolation boundaries

Treat provider cache scope and data handling as security architecture.

6

Test with real traces

Replay production-like prompts and compare cold versus warm behavior.