type ChecksumVerificationMode int

const (
    // NoVerification indicates DB should not verify checksum for SSTable blocks.
    NoVerification ChecksumVerificationMode = iota
    // OnTableRead indicates checksum should be verified while opening SSTtable.
    OnTableRead
    // OnBlockRead indicates checksum should be verified on every SSTable block read.
    OnBlockRead
    // OnTableAndBlockRead indicates checksum should be verified
    // on SSTable opening and on every block read.
    OnTableAndBlockRead
)

type CompressionType uint32

const (
    // None mode indicates that a block is not compressed.
    None CompressionType = 0
    // Snappy mode indicates that a block is compressed using Snappy algorithm.
    Snappy CompressionType = 1
    // ZSTD mode indicates that a block is compressed using ZSTD algorithm.
    ZSTD CompressionType = 2
)

type FileLoadingMode int

const (
    // FileIO indicates that files must be loaded using standard I/O
    FileIO FileLoadingMode = iota
    // LoadToRAM indicates that file must be loaded into RAM
    LoadToRAM
    // MemoryMap indicates that that the file must be memory-mapped
    MemoryMap
)