rocksdb

Enum BlockBasedTablePinningTier

Source 
#[repr(C)]
pub enum BlockBasedTablePinningTier {
    Fallback = 0,
    None = 1,
    FlushAndSimilar = 2,
    All = 3,
}
Expand description

Used by BlockBasedOptions for setting metadata cache pinning tiers. Controls how metadata blocks (index, filter, etc.) are pinned in block cache.

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Fallback = 0

Use fallback pinning tier (context-dependent)

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None = 1

No pinning - blocks can be evicted at any time

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FlushAndSimilar = 2

Pin blocks for flushed files and similar scenarios

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All = 3

Pin all blocks (highest priority)

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