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PageCompressor

featherdb_storage::compression

Struct PageCompressor 

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pub struct PageCompressor {
    pub stats: CompressionStats,
    /* private fields */
}
Expand description

Page compression manager Handles compression/decompression of pages with configurable settings

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§stats: CompressionStats

Compression statistics

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impl PageCompressor

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pub const DEFAULT_THRESHOLD: usize = 512

Default compression threshold (512 bytes)

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pub fn new(compression_type: CompressionType, threshold: usize) -> Self

Create a new page compressor

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pub fn default_lz4() -> Self

Create a page compressor with default settings (LZ4, 512 byte threshold)

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pub fn default_zstd() -> Self

Create a page compressor with ZSTD and default settings

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pub fn compress_page(&self, data: &[u8]) -> Result<Vec<u8>>

Compress page data for writing to disk Returns the compressed data with header, or original data if compression is not beneficial

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pub fn decompress_page(&self, data: &[u8], page_size: usize) -> Result<Vec<u8>>

Decompress page data read from disk Automatically detects if the page is compressed and decompresses if needed

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pub fn compression_type(&self) -> CompressionType

Get the compression type

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pub fn threshold(&self) -> usize

Get the compression threshold

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pub fn stats(&self) -> &CompressionStats

Get compression statistics

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