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# Enum Cache Miss Evidence

> Typed evidence for a cache miss diagnosis.

Generated from `cargo doc --no-deps -p nemo-relay -p nemo-relay-adaptive -p nemo-relay-ffi`.

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Typed evidence for a cache miss diagnosis.

## Variants

### `PrefixMismatch`

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Stable prefix diverged from the retained exemplar.

#### Fields

### `first_mismatch_span_id: String`

Span ID of the first mismatching stable block.

### `sequence_index: u32`

Zero-based sequence index of the mismatching block.

### `expected_hash_prefix: String`

Expected short SHA-256 hash prefix.

### `actual_hash_prefix: String`

Actual short SHA-256 hash prefix.

### `BelowMinimumThreshold`

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Stable prefix is too short for provider cache reuse.

#### Fields

### `observed_prefix_tokens: u32`

Observed stable prefix tokens.

### `required_min_tokens: u32`

Required minimum tokens for cache reuse.

### `estimation_source: String`

Source of the token estimate.

### `RetentionExpired`

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Stable prefix likely aged out of the provider retention window.

#### Fields

### `observed_gap_secs: f64`

Observed gap between requests with the same stable prefix.

### `retention_window_secs: f64`

Provider retention window in seconds.

### `provider_semantics: String`

Human-readable provider semantics summary.

### `Unknown`

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Diagnosis could not be justified from the available facts.

#### Fields

### `missing_facts: Vec<String>`

List of facts that were unavailable at classification time.

## Trait Implementations

### `impl Clone for CacheMissEvidence`

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#### `clone`

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#### `clone_from`

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### `impl Debug for CacheMissEvidence`

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#### `fmt`

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### `impl<'de> Deserialize<'de> for CacheMissEvidence`

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#### `deserialize`

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### `impl PartialEq for CacheMissEvidence`

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#### `eq`

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#### `ne`

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### `impl Serialize for CacheMissEvidence`

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#### `serialize`

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### `impl StructuralPartialEq for CacheMissEvidence`

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