# BinaryIndex Cache Charter

## Mission
Own Valkey/Redis caching for BinaryIndex lookup and resolution flows. Ensure deterministic keying and offline-friendly behavior.

## Responsibilities
- Maintain `StellaOps.BinaryIndex.Cache` services and options.
- Preserve deterministic cache keys and predictable TTL behavior.
- Surface open work on `TASKS.md`; update statuses (TODO/DOING/DONE/BLOCKED/REVIEW).

## Key Paths
- `CachedBinaryVulnerabilityService.cs`
- `ResolutionCacheService.cs`
- `BinaryCacheOptions.cs`
- `BinaryCacheServiceExtensions.cs`

## Coordination
- BinaryIndex owners for lookup and fix index behavior.
- WebService team for DI and runtime configuration.

## Required Reading
- `docs/modules/binaryindex/architecture.md`
- `docs/modules/platform/architecture-overview.md`

## Working Agreement
- 1. Update task status to `DOING`/`DONE` in both corresponding sprint file `/docs/implplan/SPRINT_*.md` and the local `TASKS.md` when you start or finish work.
- 2. Review this charter and the Required Reading documents before coding; confirm prerequisites are met.
- 3. Keep changes deterministic (stable ordering, timestamps, hashes) and align with offline/air-gap expectations.
- 4. Coordinate doc updates, tests, and cross-guild communication whenever contracts or workflows change.
- 5. Revert to `TODO` if you pause the task without shipping changes; leave notes in commit/PR descriptions for context.