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Reference · livepage:docs-harness-features-backlog-gaps-effect-routing-gap-route-003
GAP-ROUTE-003: Effect Result Caching and Deduplication overview
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GAP-ROUTE-003: Effect Result Caching and Deduplication
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GAP-ROUTE-003: Effect Result Caching and Deduplication
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docs/harness-features-backlog/gaps/effect-routing/gap-route-003
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# GAP-ROUTE-003: Effect Result Caching and Deduplication
| Field | Value |
|-------|-------|
| Category | effect-routing |
| Priority | Medium |
| Effort | M |
| Status | Partial |
## Description
Cache effect results by invocation key. Skip re-execution for identical effects across runs or sessions.
## Current State
Replay deduplicates within a run via journal. No cross-run caching.
## Target State
Cross-run effect cache indexed by invocation key. Identical effects return cached results without re-execution. Cache invalidation based on input changes. Configurable cache TTL.
## Dependencies
- None
## Key Files
| Component | Path |
|-----------|------|
| Runtime replay | `packages/sdk/src/runtime/replay/` |
| Storage | `packages/sdk/src/storage/` |
## Recommendation
Phase 3 implementation. Add cross-run effect cache. Index by invocation key (SHA256 of processId:stepId:taskId). Configurable TTL.
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- page:docs-harness-features-backlog·PageHarness Features Backlog: Gap Analysis (Restructured)